A Review on Polyaniline: Synthesis, Properties, Nanocomposites, and Electrochemical Applications

Majeed, Abdulwahhab H.; Mohammed, Leqaa A.; Hammoodi, Omar G.; Sehgal, Shankar; Alheety, Mustafa A.; Saxena, Kuldeep K.; Dadoosh, Safaa A.; Mohammed, Israa K.; Jasim, Mustafa M.; Salmaan, N. Ummal

doi:https://doi.org/10.1155/2022/9047554

International Journal of Polymer Science

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Volume 2022 | Article ID 9047554 | https://doi.org/10.1155/2022/9047554

A Review on Polyaniline: Synthesis, Properties, Nanocomposites, and Electrochemical Applications

Abdulwahhab H. Majeed,¹Leqaa A. Mohammed,¹Omar G. Hammoodi,¹Shankar Sehgal,²Mustafa A. Alheety,³Kuldeep K. Saxena,⁴Safaa A. Dadoosh,¹Israa K. Mohammed,¹Mustafa M. Jasim,¹and N. Ummal Salmaan⁵

Academic Editor: Temel Varol

Received20 Jun 2022

Revised11 Jul 2022

Accepted19 Sept 2022

Published14 Oct 2022

Abstract

The development in the use of polyaniline (PANI) in advanced studies makes us draw attention to the presented research and combine it into one study like this one. The unique composition of PANI qualifies it for use in electrochemical applications in addition to many other applications whose use depends on its mechanical properties. Based on this, it is necessary to limit the reactions that produce PANI and the cheapest cost, and then limit the current uses in the formation of nanocomposites with metals, their oxides, and/or carbon nanocomposites in order to determine what is missing from them and work on it again to expand its chemistry. The development in the use of PANI in advanced studies makes us draw attention to the research presented on PANI and combine it into one study. One of the very important things that made PANI possess a very huge research revolution are preparation in a variety of ways, easy and inexpensive, from which a daily product can be obtained with very high purity, as well as its distinctive properties that made it the focus of researchers in various scientific departments. The unique structure of PANI, which is easy to prepare in its pure form or with various chemical compounds including metals, metal oxides, and carbon nanomaterials (such as carbon nanotubes, graphene, graphene oxide, and reduced graphene oxide), qualifies it for use in electrochemical applications. The various studies reviewed showed that PANI gave good results in the applications of super capacitors. In some of the studies mentioned later, it gave a specific capacitance of 503 F/g, cycle stability 85% at 10,000 cycles, energy density 8.88 kW/kg, and power density 96 W h/kg. It was also noted that these values improved significantly when using PANI with its nanocomposites. Because of its good electrical conductivity and the possibility of preparing it with a high surface area with nanostructures in the form of nanowires, nanofibers, and nanotubes, PANI was used as a gas sensor. We have noticed, through the studies conducted in this field, that the properties of PANI as a basic material in gas sensors are greatly improved when it is prepared in the form of PANI nanocomposites, as explained in detail later. From this review, we tried with great effort to shed light on this attractive polymer in terms of its different preparation methods, its distinctive properties, its nanocomposites, and the type of polymerization used for each nanocomposites, as well as its applications in its pure form or with its nanocomposites in the supercapacitor and gas sensor applications.

1. Introduction

During the past few decades, nanomaterials, polymeric materials, and hybrid materials [1–6] have aroused a distinguished interest in the world of scientific research due to their distinctive chemical and physical properties and their various applications in photonics, electronics, sensors, conductive materials, biotechnology, medicine, and pollution control [7–15]. Conductive polymers are among the important classes of polymers that have become popular in recent decades because of their high efficiency, which made them distinguished in the field of electrical conductivity and energy storage [16–18]. Polyaniline (PANI) and its derivatives, polypyrrole, polythiophene, poly(para-phenylene), and polyphenylene sulfide (Figure 1), are among the most widely used classes of conductive polymers in recent times because of their good electrical properties that can be controlled, their good environmental stability, their cheapness, and their easy preparedness [19–21].

2. Polyaniline

PANI is the most important of these polymers mentioned, which has been used in research as an advanced polymeric material during the last decade, because it is a polymer rich in electrons and has good electrical conductivity, as well as it has a good ability to modify and processing [22]. PANI has been used in many applications including solar cells [23], lithium batteries [24], supercapacitors [25], fuel cells [26], flexible electrodes [27], corrosion-resistant coatings [28], water pollutant removal [29], screen printing [30], and sensors [31]. MacDiarmid (1997) suggested different kinds of basic PANI. He proposed three idealized oxidation state structures including completely reduced leucoemeraldine base (LEB), semi-oxidized emeraldine base (EB), and fully oxidized pernigraniline base (PAB; Figure 2). The EB is the greatest broadly studied PANI type [32, 33].

Different forms of PANI display various colors like leucoemeraldine structure of PANI is colorless or white in color, emeraldine type is blue in base structure and green in salt form, and pernigraniline structure is blue to violet color. Using protonic acids and oxidative doping procedures, EB can be converted into a conducting state (Figure 3), but this process cannot be performed for LEB and PAB [34–36].

The color change associated with PANI in different oxidation states can be used in sensors and electrochromic devices [37]. The best method for making a PANI sensor is arguably to take advantage of the dramatic conductivity changes between the different oxidation states or doping levels [38].

3. Synthesis of PANI

PANI is considered one of the attractive electrical conductive polymers, because it can be easily converted between base and salt forms easily by adding base (OH⁻) or acid (H⁺). The properties of reduction and oxidation, good electrical conductivity, easy method of preparation, and modification in addition to its environmental stability made PANI one of the most conductive polymeric materials that the researchers dealt with in their work. In the past, the oxidative polymerization of aniline monomers in an acidic medium was used to prepare PANI, but with the development of work and research on PANI, different methods and techniques were used to prepare it, including [39]:

1. Electrochemical polymerization.

2. Chemical polymerization.

3. Vapor-phase polymerization (VPP).

3. Photochemically initiated polymerization.

4. Enzyme-catalyzed polymerization.

5. Polymerization employing electron acceptors [39].

3.1. Electrochemical Polymerization

The electrochemical method for preparing conductive polymers plays an important role in the preparation, because in many applications, it is required to prepare polymers in the form of a thin film with a wide surface area. When conductive polymers are prepared using the chemical method, it is difficult to follow the electrochemical process of the prepared polymers, because the study of electrical and optical properties depends mainly on these thin layers of polymer deposited on the electrode. This method of preparing conductive polymers is similar to the electrodeposition method used in metals. Electrodynamic and galvanic techniques were used to prepare PANI as electrochemical methods. The electrochemical method used in the preparation includes many advantages over the chemical method, which is cheap and easy to operate, giving a very pure and homogeneous polymer deposited on the electrode; in addition, the process takes place in a simple chamber cell containing a power source, an electrode, and an electrolyte solution [40, 41].

The electro-polymerization method to prepare PANI follows the next steps: (1) formation of a positive free radical (cationic free radical) of aniline monomers by oxidation at the anode, (2) the combination of the structures formed in the first step to form dimers through the process of removing protons and rearranging electrons in the aromatic rings, (3) the growth of these formed dimers and the formation of new, larger structures, (4) the last step is the spontaneous activation of the polymeric chain formed by the acid present in the solution to obtain the resulting denatured PANI, and this is the proposed mechanism for the electro-polymerization of PANI (Figure 4) [41, 42].

3.2. Chemical Polymerization

The chemical method (oxidative polymerization) for the preparation of polymers is characterized as a simple and cheap method capable of preparing large quantities of polymers within a short time. Until now, it is the common method used by many companies to prepare PANI [43].

In this method, the oxidizing force that initiates the polymerization process is provided by adding a chemical oxidizing agent to the solution. Ammonium persulfate ((NH₄)₂S₂O₈), sodium vanadate (NaVO₃), cerium sulfate (Ce(SO₄)₂), hydrogen peroxide (H₂O₂), potassium iodate (KIO₃), potassium dichromate (K₂Cr₂O₇), and others were used as oxidizing agents during the polymerization process [44]. In addition, ammonium persulfate ((NH₄)₂S₂O₈) is one of the most widely used oxidizing materials in this method. Usually, ammonium persulfate is used in the polymerization of aniline in an acidic medium (), in order to be suitable for dissolving the aniline, to stimulate the initiation of the polymerization process, and to avoid the formation of unwanted by-products. The usually used molar ratio between persulfate and aniline (APS/Aniline) is less than 1.2 [45].

The mechanism of polymerization of aniline by ammonium persulfate occurs in its initial stages through a mechanism similar to the mechanism of polymerization of aniline by electrochemical method as described previously [46–48]. The first stage includes the formation of the radical cation of aniline by capturing nitrogen electrons with ammonium persulfate [49].

In the second step, the reaction occurs between the nitrogen radical cation with the radical cation in the para-site of another aniline molecule, and the reaction continues (Figure 5). Mostly, the interaction between the radical cation of nitrogen in the first aniline molecule with the radical cation occurs in the para site of the second aniline molecule, but sometimes, the reaction occurs with the radical cation in the ortho position with the second aniline molecule, and this leads to a distortion of the resulting PANI chains [39].

3.3. Vapor-Phase Polymerization

One of the important processes of PANI synthesis is VPP. This method was used for the first time to deposit conductive PANI on cotton threads in 1998, by saturating cotton threads with ammonium persulfate (NH₄)₂S₂O₈, then passing aniline steam over cotton threads to be coated with conductive PANI [51].

VPP technology is used to manufacture ultra-thin polymer films, such as PANI, polypyrrole, polythiophene, and others. This process is one of the techniques of self-assembly polymerization that takes place under the vapor phase, which can easily prepare thin films of polymers with very high purity and with superconductivity, because they are free of impurities, as well as the possibility of preparing them at the nanoscale [44, 52, 96, 97].

3.4. Photochemically Initiated Polymerization

Photocatalytic polymerization is a promising and attractive method for producing PANI with unique properties and compositions. In addition, it is a very important method for the production of hybrid materials [53]. In 1998 [54] and 2001 [55], Kobayashi and co-workers demonstrated that it is possible to prepare PANI by photopolymerization using single- or bi-layer films containing [Ru(bipy)₃]²⁺ as a primer and methylviologen (MV²⁺) as an oxidizer, then irradiated with visible light to give PANI. [Ru(bipy)₃]²⁺ is irradiated at the 452 nm region, and this leads to the generation of the triple excited state *[Ru(bipy)₃]²⁺. The process of electron transfer between *[Ru(bipy)₃]²⁺ and MV²⁺ leads to the generation of the strong oxidizer [Ru (bipy)₃]³⁺, which is responsible for the process of oxidation of aniline and then polymerization of the latter to PANI. In these studies, the formed PANI was deposited on monolayer or bilayer films to be used later in molecular electronics.

Later, different techniques were used for the irradiation process to form PANI using an external source, including gamma rays [56], microwaves [57], ultraviolet rays [58], and X-rays [59].

3.5. Enzyme-Catalyzed Polymerization

The researchers in the past years have resorted to using enzymes, such as horseradish peroxidase (HRP), as catalysts for the synthesis of some important polymers, such as PANI and poly pyrrole in the presence of oxidants, such as peroxide [60, 61]. This method is considered environmentally friendly, because the peroxide is converted to water, but several studies have produced branched polymers with low molecular weight. To overcome these problems, Samuelson et al. [62, 63] used various electrolytes, such as poly(styrene sulfonate) (PSS) as templates in the HRP-catalyzed PANI preparation mixture to produce regular polymeric chains. PSS plays three roles in this process: (i)PSS acts as a template that aligns the aniline monomers before starting the polymerization process in order to arrange the monomers in the desired head-to-tail coupling position.(ii)It provides important doping in the process of activating PANI into the form of electrically conductive emeraldine salt.(iii)It imparts the water solubility of the (PAni/PSS) product [64].

In this method, the polymerization process takes place in an acidic medium at (), in which water-soluble PANI is obtained [65]. The good electrolytes used are poly(vinylphosphonic acid) and DNA, as well as PSS [66, 67].

4. Properties of PANI

4.1. Physical Properties

PANI has various physical properties, depending on its three forms, where these forms show different colors according to their chemical nature. PANI appears white/clear or colorless if the polymer form is leucoemeraldine, and if the polymer type is pernigraniline, it gives blue to violet color, and if the polymer form is emeraldine, it gives blue color if it is basic and gives green color if it is salt form. PANI also has good electrical conductivity only in the emeraldine form, and the other types do not show significant conductivity [37]. As for solubility, all forms of PANI are insoluble in water, acetone, ethanol, and other solvents, but are soluble in dimethylformamide, dimethyl sulfoxide, and N-methyl-2-pyrrolidone [37, 68, 69].

4.2. Optical Properties

The optical properties of PANI are used to study the oxidation level and protonation process of the polymer. Huang and MacDiarmid observed that when leucoemeraldine was converted from its base form to its salt form, a blue shift occurred from 3.94 to 4.17 eV. This shift occurred due to the excitation of electrons between the locally occupied upper molecular orbital (HOMO) to the lower unoccupied molecular orbital (LOMO), where the absorption peak was observed at 2.1 eV [70]. Barbero and Kötz studied the optical properties of PANI films deposited on gold, and two absorption states appeared in the UV–visible region of the oxidized state of the polymer, the first at 3.8 eV (which is due to the π–π* transition*) and the second at 2.75 eV (which is related to the n-to-π* transition), as it has one absorption band at 1.5 eV near infrared and is due to the transition entering the band [71].

For emeraldine conductive PANI in its salt form, there are predictions of molecular orbital calculations, and later (ab initio calculations), where these studies show the presence of a single broad polaron band within the band gap. This band is half full, resulting in a signal in the ESR scan. Calculations of this band structure are consistent with the observed UV–visible and infrared spectra [72, 73]. The emeraldine salt in their compact coil structure shows three bands: the first band at 330 nm, which is assigned to (π–π* band transitions), and two visible-region bands at 430 nm, which is attributed to (π → polaron band), and 800 nm, which related to (polaron → π*) [74].

4.3. Mechanical Properties

PANI shows a noticeable difference in mechanical properties according to the polymerization method from which it was prepared. Emeraldine salts prepared by electropolymerization method are highly porous and have poor mechanical properties. In addition, PANI films prepared by electropolymerization method have poor mechanical properties, so they are not used frequently. As for PANI prepared from solutions, it is more rigid and is widely used as films and fibers, because it has less porosity and better mechanical properties [39]. The first to study the mechanical properties of PANI are Wei et al., where they noticed that a layer of PANI with a thickness of mm at a temperature of 25°C and under nitrogen atmosphere showed a storage modulus of ~200 MPa [75].

4.4. Electrical Properties

PANI is an attractive conductive polymer that is widely used in the electrical field, because it has good electrical conductivity in its emeraldine salt form. When the acid is added with the basic emeraldine of PANI, it works on protonating the imine group’s nitrogen, thus converting it into a salt, thus turning from the non-conductive form to the electrically conductive polymer [37]. Generally, the range of PANI conductivity is from S/cm (undoped base emeraldine) to S/cm (doped salt emeraldine) [76, 77]. The process of improving the electrical conductivity or increasing the number of different properties of PANI simultaneously is coupled with the doping process of the polymer. In recent decades, many researchers in the world have tended to dope PANI with various classes of chemical compounds for use in different applications. The purpose of this is to improve the electrical conductivity of the new compounds prepared (polymer compounds) to be used in that application [37, 78]. Table 1 shows the electrical conductivity of the items prepared with PANI.

4.5. Anti-Corrosion Properties

Corrosion is a chemical change to the metal due to the environmental influences surrounding it, and it is one of the major problems facing the various processes that use the metal as a base element in their applications. Many materials have been used to end or reduce the corrosion process, and one of these materials is PANI, which was first reported in the 1980s [41]. PANI was used to effectively protect steel from oxidation (corrosion) when it was used with fuel cells at the same time. Research and studies have proven that preparing layers of sulfate with PANI is much better and more suitable for reducing the corrosion of steel than layers of PANI with phosphate [98]. The materials prepared from PANI molybdate and PANI tungstate as coating materials to reduce steel corrosion were studied by Kamaraj et al. [99]. Likewise, with nickel-plated steel, the PANI coating showed great protection for this steel from corrosion [100]. In addition, Mirmohseni and Oladegaragoze used PANI-coated iron in different corrosive environments to study the corrosion potential and corrosion current [101].

4.6. Semiconducting Properties

PANI is considered one of the most promising materials in the field of electronics due to its good conductivity of electrons. The results of electrical and thermal conductivity of the ionic liquid of PANI showed that this polymer is a p-type semiconductor, and the diode of PANI was prepared by Yakuphanoglu and Şenkal [102]. On the other hand, PANI films doped with boric acid were prepared, then the electrical properties of these films were examined. It was found that PANI films doped with boric acid show semi-conductive properties, and its electrical conductivity was found S/cm at room temperature. The optical band gap of the PANI films doped with boric acid was 3.71 eV. Because of these semiconducting properties, PANI is widely used in organic field transistors and in solar batteries [103].

4.7. Capacitive Properties

PANI has been widely used in recent years in various electrical and electronic devices, especially electrical storage devices, such as the super capacitor. PANI has contributed to improving the properties of these energy-saving devices due to the rapid oxidation and reduction reactions that occur in a large part of the polymer material. PANI gives a good capacitive response and produces superior specific energies compared to double-layer capacitors. Moreover, PANI has a stronger effect than inorganic batteries and also has remarkable electrical conductivity. However, capacitors made of pure PANI experience contractions in the charge–discharge cycle [41, 104]. To overcome these problems and enhance the properties of the capacitors, researchers resorted to using other compounds with PANI, such as PANI–graphene [105–107], PANI–carbon nanotubes [108–110], PANI–manganese oxide [111], PANI/MoS₂−MnO₂ [112], PANI–silver–manganese dioxide [113], and others. These modifications of the electrodes containing PANI proved to be of great improvement in the increase of energy density, stability, and strength [41].

4.8. Magnetic Properties

Due to its high spin density, PANI shows good interest in magnetic behavior and has been used in many studies [114]. The paramagnetic nature is closely and directly related to the magnetic and electrical properties of electrically conducting PANI, which is caused by the presence of hydrochloric acid as dopant with PANI as a result of the oxidation process [115].

The polymeric composite nanotubes (PANI–Fe₃O₄) have been prepared in [116], and this composite exhibited good magnetic behavior and significant magnetic properties. Similarly, the self-assembly method was used to prepare the polymeric composite (PANI–Fe₃O₄) nanorods. In addition, because hydrogen bonding in methanol and PANI structures actually affects the polarization, it has been observed that there are good magnetic properties of iron in PANI [41].

The rotation sensitivity of PANI refers to the magnetic centers that are found in charge carriers that are implanted in metal fields as well as those along polymer chains. In this spin, the electron comes into contact with the samples, and this leads to clearly showing anti-ferromagnetic properties, such as paramagnetic sensitivity [41, 117].

5. Nanocomposites of PANI

A composite is a new substance resulting from the mixing of two or more materials that are significantly different from each other in properties. The resulting new materials (composites) have different properties or improved properties from those of the parent materials. The idea is to form a new material (composite) to bring out new, diverse, and remarkably progressive properties [118]–[120]. Although PANI exhibits attractive qualities and outstanding properties, there are some limitations in some applications [121]. Making some improvements on PANI, such as combining it with other materials to form polymeric composites, is very important to give higher efficiency in different applications. The process of mixing materials with polymers is the result of polymeric composites, so if the added material is in the nanoscale dimensions, the new material is called the polymeric nanocomposite. It has been observed that many materials were mixed with PANI to form PANI composites. The additives added to PANI to form PANI composites may be in the form of metals, metal oxides, carbon nanostructures, polymers, or various organic compounds [122]. Table 2 shows the preparation of PANI nanocomposites with metal nanoparticles.

PANI composites were also synthesized with metallic nano-oxides due to their great importance in many applications, such as electrical storage devices, water purification, electronic devices, supercapacitors, sensors, solar cells, and others. Table 3 shows the preparation of PANI nanocomposites with metal oxides and the method of their preparation.

On the other hand, PANI was extensively synthesized with carbon nanocompounds, due to the high properties demonstrated by these prepared nanocomposites compounds. The prepared PANI nanocomposites were used in many different applications and showed high efficiency in the applications used in them. Table 4 shows some PANI nanocomposites with different carbon nanocompounds.

In addition, there is a huge amount of polymeric nanocomposites of PANI in different shapes and structures and with different applications and polymerization techniques, and this is clear evidence of the importance of PANI and its wide uses in the experimental and the industrial field.

6. Application of PANI

Conductive polymers, since their discovery until now, have shown very unique properties due to their distinctive electronic arrangement, chemical nature, and due to their diverse physical specifications, and this makes them essential materials in many different applications. For example, PANI is a good electrical conductive polymer, and due to its low cost, ease of preparation, unique properties, and non-polluting of the environment, it attracts the interest of many researchers for its use in many applications. The most important applications in which PANI is used as a main material or as a secondary material are as follows.

6.1. In Supercapacitor

The world economy has played a very important role in the use of multiple sources of energy, such as natural gas, fossil fuels, and gas. The use of this fuel provides good energy, but it causes many environmental problems. Therefore, it has become very necessary to replace the traditional energy system with alternative energy sources. For this, scientists have always sought to develop and produce environmentally friendly, high-energy, and renewable energy sources, such as water energy, supercapacitors, wind energy, and fuel cells. Super capacitors are considered one of the most promising energies and of great commercial importance in the future markets, because they are used in many different applications, such as electrical and electronic devices and wearable devices. The main difference between super capacitors and conventional is that super capacitors have a capacity for storing energy 1000 times more than dielectric capacitors, as well as their long life, and show high-energy density and have fast charging and discharging [168].

Supercapacitors can be divided into three main types, which are as follows: (i) double-layer electrostatic capacitors, whose electrodes are mostly carbon materials, such as carbon, carbon nanotubes, and graphene, (ii) pseudo-electrochemical capacitors, whose electrodes are mostly made of conductive polymers and metal oxides, and (iii) hybrid pseudocapacitors, which are a mixture between the above two types [121, 169].

The electrode materials used in supercapacitors have a very important role on the efficiency of the storage device and the energy conversion process. The electrodes used in supercapacitor devices depend on the use of carbon materials, metals, and conductive polymers [170]. Although supercapacitors using various carbon materials exhibit significant energy density, good conductivity, and adequate durability, their energy density is low. As for metals, they show very appropriate electrochemical properties when used in super-capacities, but their abundance in nature, difficulty in obtaining them, and high cost limit their use for this purpose. Because of its different oxidation states, high conductivity, and specific capacitance, PANI can be used with great success in supercapacitors. In addition, the flexible electrochemical properties of PANI make it very suitable to be strongly used in the manufacture of supercapacitor electrodes. The electrochemical properties of supercapacitors in which PANI is used as a base material in the electrodes depend on the properties of the PANI itself, such as synthesis method, chemical/physical properties, dopant, and nanostructure of PANI [171]. Various carbon compounds were used with PANI to prepare the supercapacitors, such as graphene, fullerene, carbon nanotubes, and graphene oxide. Metal nanomaterials with PANI were also used for the same purpose. Table 5 shows the use of various types of materials with PANI to prepare the super capacitors.

There are also a very large number of polymeric nanocomposites of PANI used in supercapacitors, and they gave good efficiency while using as supercapacitors.

6.2. In Sensors

The device that can show the occurrence of various changes in its environment and detect the presence of other things is called a sensor. The common sensors at present are composed of organic or inorganic semiconducting materials or films [192]. One of the materials that have gained great demand in recent times for the manufacture of sensors is conductive polymers. PANI is one of these polymers, which has received great interest as sensors due to its different structures and morphologies in which it can be prepared, such as microstructures, nanowires, nanotubes, nanoparticles, and nanosheets [193]. Using PANI or one of its nanocomposites, various sensors have been manufactured, such as chemical and biological sensors. Researchers have tried to prepare PANI with different nanostructures, such as nanofibers, nanowires, and nanotubes; then, these nanostructures were used in gas sensors because of their very high surface area and the possibility of gas emission. Pure PANI cannot detect H₂S gas alone, because H₂S gas molecules cannot change the conductivity of PANI, so gold nanoparticles are grafted with PANI to form gold nanocomposites with PANI, and this new system can easily detect H₂S gas, and the response rate reaches very low concentrations (0.1 ppb) [194]. PANI nanostructures were also used to sense the presence of ammonia, hydrochloric acid, hydrazine, chloroform, carbon oxides, and methanol Table 6, and this led to a noticeable structural change in the PANI nanostructure chains [38]. The sensing property of PANI can be improved by adding different nanomaterials to form PANI nanocomposites, as this reduces the sensing time and leads to the detection of materials or gases even in very low concentrations [193, 195–202].

7. Conclusions

Providing polymeric composites with metals or their oxides in addition to various other composites in order to improve some properties is the subject of all investigations now. Because PANI originally has unique electrical properties, it always attracts the attention of researchers in their studies as well as in various applications, the most important of which is electrical applications. We concluded during this study that it is possible to improve the electrical properties of PANI to be used in sensor applications as well as in other applications.

The recent discoveries in the chemistry of PANI made researchers to devote their efforts to research in this field. It appeared to PANI with important specifications that made it preferred over the rest of the other polymers. One of the most important properties of PANI is its electrical conductivity and its various applications, which opened new horizons for researchers to research in this field. It was found that PANI possesses real electrical properties that made it a cornerstone in many applications that could be of great help to humanity in their lives, including super capacitors, solar cells, all kinds of sensors, batteries of all kinds, and fuel cells. It was also found that the electrical properties of PANI are significantly improved when it is grafted with some nanomaterials to form PANI nanocomposites. We concluded, during this study, that it is possible to improve the properties of PANI by grafting it with other materials, especially nanomaterials, to form polymeric nanocomposites of PANI, and that the latter can improve the applied properties of supercapacitors, gas sensors, and others, as documented in this study.

Data Availability

The data used to support the findings of this study are included within the article.

Conflicts of Interest

The authors declare that they have no conflicts of interest.

Acknowledgments

The authors express their thanks to the industrial and organic chemistry laboratories staff at the Department of Chemistry, College of Science, University of Diyala, Baqubah, Iraq, for their effective contribution to collecting information about PANI and its composites and arranging it for the success of this study in the service of researchers around the world.

References

M. M. Shameem, S. M. Sasikanth, R. Annamalai, and R. G. Raman, “A brief review on polymer nanocomposites and its applications,” Materials Today: Proceedings, vol. 45, pp. 2536–2539, 2021.
View at: Publisher Site | Google Scholar
N. F. Alheety, A. H. Majeed, and M. A. Alheety, “Silver nanoparticles anchored 5-methoxy benzimidazol thiomethanol (MBITM): modulate, characterization and comparative studies on MBITM and Ag-MBITM antibacterial activities,” Journal of Physics: Conference Series, vol. 1294, no. 5, p. 52026, 2019.
View at: Google Scholar
A. Kamal, M. Ashmawy, A. M. Algazzar, and A. H. Elsheikh, “Fabrication techniques of polymeric nanocomposites: a comprehensive review,” Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, vol. 236, no. 9, pp. 4843–4861, 2022.
View at: Publisher Site | Google Scholar
L. A. Adnan, N. F. Alheety, A. H. Majeed, M. A. Alheety, and H. Akbaş, “Novel organic-inorganic nanohybrids (MnO₂ and Ag nanoparticles functionalized 5-methoxy-2-mercaptobenzimidazole): one step synthesis and characterization,” Materials Today: Procedings, vol. 42, pp. 2700–2705, 2021.
View at: Publisher Site | Google Scholar
L. A. Mohammed, O. A. Nief, F. W. Askar, and A. H. Majeed, “Synthesis, characterization and antimicrobial activities of silver nanoparticles coated [1, 3] thiazin-4-one derivatives,” Journal of Physics: Conference Series, vol. 1294, no. 5, p. 52028, 2019.
View at: Google Scholar
L. A. Mohammed, “Effect of the addition of silver nanoparticles on the biological activity of thiocarbohydrazide derivatives,” Tikrit Journal of Pure Science, vol. 21, no. 6, pp. 90–97, 2018.
View at: Google Scholar
J. Zhang, D. Shu, T. Zhang et al., “Capacitive properties of PANI/MnO₂ synthesized via simultaneous-oxidation route,” Journal of Alloys and Compounds, vol. 532, pp. 1–9, 2012.
View at: Publisher Site | Google Scholar
R. Zhang and H. Pang, “Application of graphene-metal/conductive polymer based composites in supercapacitors,” Journal of Energy Storage, vol. 33, article 102037, 2021.
View at: Publisher Site | Google Scholar
C. I. Idumah, E. O. Ezeani, and I. C. Nwuzor, “A review: advancements in conductive polymers nanocomposites,” Polymer-Plastics Technology and Materials, vol. 60, no. 7, pp. 756–783, 2021.
View at: Publisher Site | Google Scholar
M. M. Mahat, A. S. M. Sabere, J. Azizi, and N. A. N. Amdan, “Potential applications of conducting polymers to reduce secondary bacterial infections among COVID-19 patients: a review,” Emergent Materials, vol. 4, no. 1, pp. 279–292, 2021.
View at: Publisher Site | Google Scholar
Z. Zhang, M. Rouabhia, and S. E. Moulton, Conductive Polymers: Electrical Interactions in Cell Biology and Medicine, CRC Press, 2018.
D. Feldman, “Polymers and polymer nanocomposites for cancer therapy,” Applied Sciences, vol. 9, no. 18, p. 3899, 2019.
View at: Publisher Site | Google Scholar
S. P. Singh, S. K. Srivastav, K. Kumar, and A. K. Agarwal, “Metal nanocomposites for energy and environmental applications,” Metal Nanocomposites for Energy and Environmental Applications, Springer, pp. 3–6, 2022.
View at: Publisher Site | Google Scholar
M. A. Farhan, A. H. Majeed, N. A. Imran, W. S. Al-Zuhairi, and L. A. Mohammed, “A review of overcome the side effect of digestion process on the drugs,” Earthline Journal of Chemical Sciiences, vol. 5, no. 2, pp. 363–375, 2021.
View at: Publisher Site | Google Scholar
M. A. Alheety, A. H. Majeed, A. H. Ali, L. A. Mohammed, A. Destagul, and P. K. Singh, “Synthesis and characterization of eggshell membrane polymer-TiO₂ nanocomposite for newly synthesized ionic liquid release,” Journal of the Iranian Chemical Society, vol. 19, no. 9, pp. 4005–4015, 2022.
View at: Publisher Site | Google Scholar
A. N. Abd, A. H. Al-Agha, and M. A. Alheety, “Addition of some primary and secondary amines to graphene oxide, and studying their effect on increasing its electrical properties,” Baghdad Science Journal, vol. 13, no. 1, pp. 97–112, 2016.
View at: Publisher Site | Google Scholar
M. G. Sumdani, M. R. Islam, A. N. A. Yahaya, and S. I. Safie, “Recent advancements in synthesis, properties, and applications of conductive polymers for electrochemical energy storage devices: a review,” Polymer Engineering and Science, vol. 62, no. 2, pp. 269–303, 2022.
View at: Publisher Site | Google Scholar
X. Li, X. Chen, Z. Jin, P. Li, and D. Xiao, “Recent progress in conductive polymers for advanced fiber-shaped electrochemical energy storage devices,” Materials Chemistry Frontiers, vol. 5, no. 3, pp. 1140–1163, 2021.
View at: Publisher Site | Google Scholar
A. H. Majeed, D. H. Hussain, E. T. B. Al-Tikrity, and M. A. Alheety, “Poly(o-phenylenediamine-GO-TiO₂) nanocomposite: modulation, characterization and thermodynamic calculations on its H₂ storage capacity,” Chemical Data Collections, vol. 28, article 100450, 2020.
View at: Publisher Site | Google Scholar
A. H. Majeed, E. T. B. Al-Tikrity, and D. H. Hussain, “Dielectric properties of synthesized ternary hybrid nanocomposite embedded in poly (vinyl alcohol) matrix films,” Polymers and Polymer Composites, p. 967391120951406, 2020.
View at: Google Scholar
M. Ates, T. Karazehir, and A. Sezai Sarac, “Conducting polymers and their applications,” Current Physical Chemistry, vol. 2, no. 3, pp. 224–240, 2012.
View at: Publisher Site | Google Scholar
J. Luo, S. Jiang, R. Liu, Y. Zhang, and X. Liu, “Synthesis of water dispersible polyaniline/poly(styrenesulfonic acid) modified graphene composite and its electrochemical properties,” Electrochimica Acta, vol. 96, pp. 103–109, 2013.
View at: Publisher Site | Google Scholar
Y. Mei, Z. Shen, S. Kundu et al., “Perovskite solar cells with polyaniline hole transport layers surpassing a 20% power conversion efficiency,” Chemistry of Materials, vol. 33, no. 12, pp. 4679–4687, 2021.
View at: Publisher Site | Google Scholar
M. A. Deyab, G. Mele, E. Bloise, and Q. Mohsen, “Novel nanocomposites of Ni-Pc/polyaniline for the corrosion safety of the aluminum current collector in the Li-ion battery electrolyte,” Scientific Reports, vol. 11, no. 1, pp. 1–8, 2021.
View at: Publisher Site | Google Scholar
A. K. Ghasemi, M. Ghorbani, M. S. Lashkenari, and N. Nasiri, “Controllable synthesis of zinc ferrite nanostructure with tunable morphology on polyaniline nanocomposite for supercapacitor application,” Journal of Energy Storage, vol. 51, article 104579, 2022.
View at: Publisher Site | Google Scholar
A. A. Yaqoob, A. Serrà, S. A. Bhawani et al., “Utilizing biomass-based graphene oxide–polyaniline–ag electrodes in microbial fuel cells to boost energy generation and heavy metal removal,” Polymers, vol. 14, no. 4, p. 845, 2022.
View at: Publisher Site | Google Scholar
J. Upadhyay, T. M. Das, and R. Borah, “Electrochemical performance study of polyaniline and polypyrrole based flexible electrodes,” International Journal of Polymer Analysis and Characterization, vol. 26, no. 4, pp. 354–363, 2021.
View at: Publisher Site | Google Scholar
C. H. Abdul Kadar, M. Faisal, N. Maruthi, N. Raghavendra, B. P. Prasanna, and S. R. Manohara, “Corrosion-resistant polyaniline-coated zinc tungstate nanocomposites with enhanced electric properties for electromagnetic shielding applications,” Macromolecular Research, pp. 1–12, 2022.
View at: Publisher Site | Google Scholar
A. Samadi, M. Xie, J. Li, H. Shon, C. Zheng, and S. Zhao, “Polyaniline-based adsorbents for aqueous pollutants removal: a review,” Chemical Engineering Journal, vol. 418, article 129425, 2021.
View at: Publisher Site | Google Scholar
X. Zhang, Y. Wang, D. Fu, G. Wang, H. Wei, and N. Ma, “Photo-thermal converting polyaniline/ionic liquid inks for screen printing highly-sensitive flexible uncontacted thermal sensors,” European Polymer Journal, vol. 147, article 110305, 2021.
View at: Publisher Site | Google Scholar
G. P. Oliveira, B. H. Barboza, and A. Batagin-Neto, “Polyaniline-based gas sensors: DFT study on the effect of side groups,” Computational & Theoretical Chemistry, vol. 1207, article 113526, 2022.
View at: Publisher Site | Google Scholar
A. G. MacDiarmid, “Polyaniline and polypyrrole: where are we headed?” Synthetic Metals, vol. 84, no. 1–3, pp. 27–34, 1997.
View at: Publisher Site | Google Scholar
S. Kalluri, A. M. Asha, S. Parvathy et al., “Electrospun nanofibers of polyaniline-carbon black composite for conductive electrode applications,” Trends in Polyaniline Research, pp. 181–202, 2013.
View at: Google Scholar
G. Venugopal, X. Quan, G. E. Johnson, F. M. Houlihan, E. Chin, and O. Nalamasu, “Photoinduced doping and photolithography of methyl-substituted polyaniline,” Chemistry of Materials, vol. 7, no. 2, pp. 271–276, 1995.
View at: Publisher Site | Google Scholar
A. Malinauskas, “Self-doped polyanilines,” Journal of Power Sources, vol. 126, no. 1–2, pp. 214–220, 2004.
View at: Publisher Site | Google Scholar
S. Bhadra, N. K. Singha, and D. Khastgir, “Dual functionality of PTSA as electrolyte and dopant in the electrochemical synthesis of polyaniline, and its effect on electrical properties,” Polymer International, vol. 56, no. 7, pp. 919–927, 2007.
View at: Publisher Site | Google Scholar
V. Babel and B. L. Hiran, “A review on polyaniline composites: synthesis, characterization, and applications,” Polymer Composites, vol. 42, no. 7, pp. 3142–3157, 2021.
View at: Publisher Site | Google Scholar
S. Virji, J. Huang, R. B. Kaner, and B. H. Weiller, “Polyaniline nanofiber gas sensors: examination of response mechanisms,” Nano Letters, vol. 4, no. 3, pp. 491–496, 2004.
View at: Publisher Site | Google Scholar
G. G. Wallace, P. R. Teasdale, G. M. Spinks, and L. A. P. Kane-Maguire, Conductive Electroactive Polymers: Intelligent Polymer Systems, CRC press, 2008.
M. Aldissi, Intrinsically Conducting Polymers: An Emerging Technology, Springer Science + Business Media, vol. 246, 2013.
M. Beygisangchin, S. Abdul Rashid, S. Shafie, A. R. Sadrolhosseini, and H. N. Lim, “Preparations, properties, and applications of polyaniline and polyaniline thin films—a review,” Polymers, vol. 13, no. 12, p. 2003, 2021.
View at: Publisher Site | Google Scholar
A. Korent, K. Ž. Soderžnik, S. Šturm, and K. Ž. Rožman, “A correlative study of polyaniline electropolymerization and its electrochromic behavior,” Journal of the Electrochemical Society, vol. 167, no. 10, article 106504, 2020.
View at: Publisher Site | Google Scholar
N. Gospodinova and L. Terlemezyan, “Conducting polymers prepared by oxidative polymerization: polyaniline,” Progress in Polymer Science, vol. 23, no. 8, pp. 1443–1484, 1998.
View at: Publisher Site | Google Scholar
N. K. Jangid, S. Jadoun, and N. Kaur, “A review on high-throughput synthesis, deposition of thin films and properties of polyaniline,” European Polymer Journal, vol. 125, article 109485, 2020.
View at: Publisher Site | Google Scholar
Y. Cao, A. Andreatta, A. J. Heeger, and P. Smith, “Influence of chemical polymerization conditions on the properties of polyaniline,” Polymer, vol. 30, no. 12, pp. 2305–2311, 1989.
View at: Publisher Site | Google Scholar
E. M. Genies, A. Boyle, M. Lapkowski, and C. Tsintavis, “Polyaniline: a historical survey,” Synthetic Metals, vol. 36, no. 2, pp. 139–182, 1990.
View at: Publisher Site | Google Scholar
K. Tzou and R. V. Gregory, “Kinetic study of the chemical polymerization of aniline in aqueous solutions,” Synthetic Metals, vol. 47, no. 3, pp. 267–277, 1992.
View at: Publisher Site | Google Scholar
D. E. Stilwell and S. Park, “Electrochemistry of conductive polymers: II. Electrochemical studies on growth properties of polyaniline,” Journal of the Electrochemical Society, vol. 135, no. 9, pp. 2254–2262, 1988.
View at: Publisher Site | Google Scholar
S. Tan, J. Zhai, B. Xue et al., “Property influence of polyanilines on photovoltaic behaviors of dye-sensitized solar cells,” Langmuir, vol. 20, no. 7, pp. 2934–2937, 2004.
View at: Publisher Site | Google Scholar
B. Guo, Y. Zhao, W. Wu et al., “Research on the preparation technology of polyaniline nanofiber based on high gravity chemical oxidative polymerization,” Chemical Engineering and Processing Process Intensification, vol. 70, pp. 1–8, 2013.
View at: Publisher Site | Google Scholar
B. Das, S. Kar, S. Chakraborty, D. Chakraborty, and S. Gangopadhyay, “Synthesis and characterization of polyacrylamide–polyaniline conductive blends,” Journal of Applied Polymer Science, vol. 69, no. 5, pp. 841–844, 1998.
View at: Publisher Site | Google Scholar
J.-Y. Kim, J.-H. Lee, and S.-J. Kwon, “The manufacture and properties of polyaniline nano-films prepared through vapor-phase polymerization,” Synthetic Metals, vol. 157, no. 8–9, pp. 336–342, 2007.
View at: Publisher Site | Google Scholar
P. Zarrintaj and M. R. Saeb, “Synthetic route of polyaniline (IV): irradiation path,” Fundamentals and Emerging Applications of Polyaniline, Elsevier, pp. 91–103, 2019.
View at: Publisher Site | Google Scholar
K. Teshima, S. Uemura, N. Kobayashi, and R. Hirohashi, “Effect of pH on photopolymerization reaction of aniline derivatives with the tris(2,2’-bipyridyl)ruthenium complex and the methylviologen system,” Macromolecules, vol. 31, no. 20, pp. 6783–6788, 1998.
View at: Publisher Site | Google Scholar
Y. Kim, S. Fukai, and N. Kobayashi, “Photopolymerization of aniline derivatives in solid state and its application,” Synthetic Metals, vol. 119, no. 1–3, pp. 337-338, 2001.
View at: Publisher Site | Google Scholar
P. Hamdi-Mohammadabad, T. Tohidi, R. Talebzadeh, R. Mohammad-Rezaei, and S. Rahmatallahpur, “Preparation and characterization of gamma irradiated ZnO/PANI hybrid films,” Journal of Radioanalytical and Nuclear Chemistry, vol. 330, no. 3, pp. 785–796, 2021.
View at: Publisher Site | Google Scholar
M. R. Gizdavic-Nikolaidis, D. R. Stanisavljev, A. J. Easteal, and Z. D. Zujovic, “A rapid and facile synthesis of nanofibrillar polyaniline using microwave radiation,” Macromolecular Rapid Communications, vol. 31, no. 7, pp. 657–661, 2010.
View at: Publisher Site | Google Scholar
S. V. J. Sury, A. Ulianas, and S. Aini, “Synthesis of conducting polyaniline with photopolymerization method and characterization,” Journal of Physics: Conference Series, vol. 1788, no. 1, p. 12004, 2021.
View at: Google Scholar
J. F. Felix, R. A. Barros, W. M. De Azevedo, and E. F. da Silva Jr, “X-ray irradiation: a non-conventional route for the synthesis of conducting polymers,” Synthetic Metals, vol. 161, no. 1–2, pp. 173–176, 2011.
View at: Publisher Site | Google Scholar
R. Sfez, E. Natan, Y. Bardavid et al., “Enzyme mediated encapsulation of gold nanoparticles by polyaniline nanoshell,” Journal of Self-Assembly and Molecular Electronics, vol. 3, no. 1, pp. 1–16, 2015.
View at: Publisher Site | Google Scholar
A. Jabłońska, M. Gniadek, and B. Pałys, “Enhancement of direct electrocatalytic activity of horseradish peroxidase on polyaniline nanotubes,” Journal of Physical Chemistry C, vol. 119, no. 22, pp. 12514–12522, 2015.
View at: Publisher Site | Google Scholar
L. A. Samuelson, A. Anagnostopoulos, K. S. Alva, J. Kumar, and S. K. Tripathy, “Biologically derived conducting and water soluble polyaniline,” Macromolecules, vol. 31, no. 13, pp. 4376–4378, 1998.
View at: Publisher Site | Google Scholar
W. Liu, J. Kumar, S. Tripathy, K. J. Senecal, and L. Samuelson, “Enzymatically synthesized conducting polyaniline,” Journal of the American Chemical Society, vol. 121, no. 1, pp. 71–78, 1999.
View at: Publisher Site | Google Scholar
X. Wang, H. Schreuder-Gibson, M. Downey, S. Tripathy, and L. Samuelson, “Conductive fibers from enzymatically synthesized polyaniline,” Synthetic Metals, vol. 107, no. 2, pp. 117–121, 1999.
View at: Publisher Site | Google Scholar
W. Liu, J. Kumar, S. Tripathy, and L. A. Samuelson, “Enzymatic synthesis of conducting polyaniline in micelle solutions,” Langmuir, vol. 18, no. 25, pp. 9696–9704, 2002.
View at: Publisher Site | Google Scholar
R. Nagarajan, S. Tripathy, J. Kumar, F. F. Bruno, and L. Samuelson, “An enzymatically synthesized conducting molecular complex of polyaniline and poly (vinylphosphonic acid),” Macromolecules, vol. 33, no. 26, pp. 9542–9547, 2000.
View at: Publisher Site | Google Scholar
R. Nagarajan, W. Liu, J. Kumar, S. K. Tripathy, F. F. Bruno, and L. A. Samuelson, “Manipulating DNA conformation using intertwined conducting polymer chains,” Macromolecules, vol. 34, no. 12, pp. 3921–3927, 2001.
View at: Publisher Site | Google Scholar
L. W. Shacklette and C. C. Han, “Solubility and dispersion characteristics of polyaniline,” MRS Online Proceedings Library, vol. 328, 1993.
View at: Publisher Site | Google Scholar
H. Hussin, S. N. Gan, S. Mohamad, and S. W. Phang, “Synthesis of water-soluble polyaniline by using different types of cellulose derivatives,” Polymers and Polymer Composites, vol. 25, no. 7, pp. 515–520, 2017.
View at: Publisher Site | Google Scholar
W. S. Huang and A. G. MacDiarmid, “Optical properties of polyaniline,” Polymer, vol. 34, no. 9, pp. 1833–1845, 1993.
View at: Publisher Site | Google Scholar
C. Barbero and R. Kötz, “Nanoscale dimensional changes and optical properties of polyaniline measured by in situ spectroscopic ellipsometry,” Journal of the Electrochemical Society, vol. 141, no. 4, pp. 859–865, 1994.
View at: Publisher Site | Google Scholar
S. Stafström, J. L. Brédas, A. J. Epstein et al., “Polaron lattice in highly conducting polyaniline: theoretical and optical studies,” Physical Review Letters, vol. 59, no. 13, pp. 1464–1467, 1987.
View at: Publisher Site | Google Scholar
L. Zhuang, Q. Zhou, and J. Lu, “Simultaneous electrochemical-ESR-conductivity measurements of polyaniline,” Journal of Electroanalytical Chemistry, vol. 493, no. 1–2, pp. 135–140, 2000.
View at: Publisher Site | Google Scholar
Y. Xia, J. M. Wiesinger, A. G. MacDiarmid, and A. J. Epstein, “Camphorsulfonic acid fully doped polyaniline emeraldine salt: conformations in different solvents studied by an ultraviolet/visible/near-infrared spectroscopic method,” Chemistry of Materials, vol. 7, no. 3, pp. 443–445, 1995.
View at: Publisher Site | Google Scholar
Y. Wei, G.-W. Jang, K. F. Hsueh, E. M. Scherr, A. G. MacDiarmid, and A. J. Epstein, “Thermal transitions and mechanical properties of films of chemically prepared polyaniline,” Polymer, vol. 33, no. 2, pp. 314–322, 1992.
View at: Publisher Site | Google Scholar
W.-S. Huang, B. D. Humphrey, and A. G. MacDiarmid, “Polyaniline, a novel conducting polymer. Morphology and chemistry of its oxidation and reduction in aqueous electrolytes,” Jounal of the Chemical Society, Faraday Transactions 1: Physical Chemistry Condensed Phases, vol. 82, no. 8, pp. 2385–2400, 1986.
View at: Google Scholar
M. Q. Mezan, S. O. Mezan, K. Mohammed, and A. H. Jabbar, “A review on synthesis of conducting with polyaniline rice husk ash silica nanocomposites and application,” International Journal of Psychosocial Rehabilitation, vol. 24, no. 3, 2020.
View at: Google Scholar
N. Khalid, J. A. Razak, H. Hasib et al., “A short review on polyaniline (PANI) based nanocomposites for various applications: enhancing the electrical conductivity,” IOP Conference Series: Materials Science and Engineering, vol. 957, no. 1, p. 12028, 2020.
View at: Publisher Site | Google Scholar
K. A. Ibrahim, “Synthesis and characterization of polyaniline and poly(aniline-co-o-nitroaniline) using vibrational spectroscopy,” Arabian Journal of Chemistry, vol. 10, pp. S2668–S2674, 2017.
View at: Publisher Site | Google Scholar
H. F. Alesary, H. K. Ismail, A. F. Khudhair, and M. Q. Mohammed, “Effects of dopant ions on the properties of polyaniline conducting polymer,” Oriental Journal of Chemistry, vol. 34, no. 5, pp. 2525–2533, 2018.
View at: Publisher Site | Google Scholar
J. Wang, Z. Wu, K. Hu, X. Chen, and H. Yin, “High conductivity graphene-like MoS₂/polyaniline nanocomposites and its application in supercapacitor,” Journal of Alloys and Compounds, vol. 619, pp. 38–43, 2015.
View at: Publisher Site | Google Scholar
A. Sayah, F. Habelhames, A. Bahloul et al., “Electrochemical synthesis of polyaniline-exfoliated graphene composite films and their capacitance properties,” Journal of Electroanalytical Chemistry, vol. 818, pp. 26–34, 2018.
View at: Publisher Site | Google Scholar
A. H. Al-Agha and I. A. Latif, “Silver nanoparticles anchored 5-methoxy benzimidazol thiomethanol (MBITM): modulate, characterization and comparative studies on MBITM and ag-MBITM antibacterial activities,” Diyala Journal of Pure Science, vol. 12, 3-part 1, 2016.
View at: Google Scholar
D. Majumdar, “Polyaniline nanocomposites: innovative materials for supercapacitor applications–PANI nanocomposites for supercapacitor applications,” Polymer Nanocomposites for Advanced Engineering and Military Applications, IGI Global, pp. 220–253, 2019.
View at: Google Scholar
S. B. Kondawar, M. D. Deshpande, and S. P. Agrawal, “Transport properties of conductive polyaniline nanocomposites based on carbon nanotubes,” International Journal of Composite Materials, vol. 2, no. 3, pp. 32–36, 2012.
View at: Publisher Site | Google Scholar
C. Basavaraja, G. H. Jung, and D. S. Huh, “Solubility and electrochemical properties of chemically modified polyaniline-gold/camphor sulfonic acid composites,” Polymer Composites, vol. 36, no. 2, pp. 245–252, 2015.
View at: Publisher Site | Google Scholar
M. Diantoro and A. A. Mustikasari, “The influence of SnO₂ nanoparticles on electrical conductivity, and transmittance of PANI-SnO₂ films,” IOP Conference Series: Materials Science and Engineering, vol. 367, no. 1, p. 12034, 2018.
View at: Publisher Site | Google Scholar
M. R. Safenaz and M. Sheikha, “Synthesis and electrical properties of polyaniline composite with silver nanoparticles,” Advances in Materials Physics and Chemistry, p. 2012, 2012.
View at: Google Scholar
V. Kumar, T. Yokozeki, T. Goto, and T. Takahashi, “Mechanical and electrical properties of PANI-based conductive thermosetting composites,” Journal of Reinforced Plastics and Composites, vol. 34, no. 16, pp. 1298–1305, 2015.
View at: Publisher Site | Google Scholar
A. J. Heeger, “Polyaniline with surfactant counterions: conducting polymer materials which are processible in the conducting form,” Synthetic Metals, vol. 57, no. 1, pp. 3471–3482, 1993.
View at: Publisher Site | Google Scholar
Y. Cao, P. Smith, and A. J. Heeger, “Counter-ion induced processibility of conducting polyaniline,” Synthetic Metals, vol. 57, no. 1, pp. 3514–3519, 1993.
View at: Publisher Site | Google Scholar
A. K. Bajpai, J. Bajpai, and S. N. Soni, “Designing polyaniline (PANI) and polyvinyl alcohol (PVA) based electrically conductive nanocomposites: preparation, characterization and blood compatible study,” Journal of Macromolecular Science, Part A Pure and Applied Chemistry, vol. 46, no. 8, pp. 774–782, 2009.
View at: Publisher Site | Google Scholar
N. Y. Yuan, F. F. Ma, Y. Fan, Y. B. Liu, and J. N. Ding, “High conductive ethylene vinyl acetate composites filled with reduced graphene oxide and polyaniline,” Composites. Part A, Applied Science and Manufacturing, vol. 43, no. 12, pp. 2183–2188, 2012.
View at: Publisher Site | Google Scholar
T.-C. Mo, H.-W. Wang, S.-Y. Chen, and Y.-C. Yeh, “Synthesis and dielectric properties of polyaniline/titanium dioxide nanocomposites,” Ceramics International, vol. 34, no. 7, pp. 1767–1771, 2008.
View at: Publisher Site | Google Scholar
S. K. Shweta, C. Gumma, and A. G. Bidve, “In-situ chemical synthesis and electrical properties of PANI/TiO₂ composites, international research journal of engineering and technology,” International Research Journal of Engineering and Technology, vol. 8, no. 4, pp. 1598–1603, 2021.
View at: Google Scholar
M. Vellakkat, A. Kamath, S. Raghu, S. Chapi, and D. Hundekal, “Dielectric constant and transport mechanism of percolated polyaniline nanoclay composites,” Industrial and Engineering Chemistry Research, vol. 53, no. 43, pp. 16873–16882, 2014.
View at: Google Scholar
A. M. Meftah, E. Gharibshahi, N. Soltani, W. Yunus, and E. Saion, “Structural, optical and electrical properties of PVA/PANI/nickel nanocomposites synthesized by gamma radiolytic method,” Polymers, vol. 6, no. 9, pp. 2435–2450, 2014.
View at: Publisher Site | Google Scholar
A. A. Ganash, F. M. Al-Nowaiser, S. A. Al-Thabaiti, and A. A. Hermas, “Comparison study for passivation of stainless steel by coating with polyaniline from two different acids,” Progress in Organic Coatings, vol. 72, no. 3, pp. 480–485, 2011.
View at: Publisher Site | Google Scholar
K. Kamaraj, V. Karpakam, S. Sathiyanarayanan, S. S. Azim, and G. Venkatachari, “Synthesis of tungstate doped polyaniline and its usefulness in corrosion protective coatings,” Electrochimica Acta, vol. 56, no. 25, pp. 9262–9268, 2011.
View at: Publisher Site | Google Scholar
S. Chaudhari and P. P. Patil, “Inhibition of nickel coated mild steel corrosion by electrosynthesized polyaniline coatings,” Electrochimica Acta, vol. 56, no. 8, pp. 3049–3059, 2011.
View at: Publisher Site | Google Scholar
A. Mirmohseni and A. Oladegaragoze, “Anti-corrosive properties of polyaniline coating on iron,” Synthetic Metals, vol. 114, no. 2, pp. 105–108, 2000.
View at: Publisher Site | Google Scholar
F. Yakuphanoglu and B. F. Şenkal, “Electronic and thermoelectric properties of polyaniline organic semiconductor and electrical characterization of Al/PANI MIS diode,” Journal of Physical Chemistry C, vol. 111, no. 4, pp. 1840–1846, 2007.
View at: Publisher Site | Google Scholar
F. Yakuphanoglu and B. F. Şenkal, “Electrical transport properties of an organic semiconductor on polyaniline doped by boric acid,” Polymers for Advanced Technologies, vol. 19, no. 12, pp. 1876–1881, 2008.
View at: Publisher Site | Google Scholar
G. A. Snook, P. Kao, and A. S. Best, “Conducting-polymer-based supercapacitor devices and electrodes,” Journal of Power Sources, vol. 196, no. 1, pp. 1–12, 2011.
View at: Publisher Site | Google Scholar
R. Pal, S. L. Goyal, I. Rawal, A. K. Gupta, and Ruchi, “Efficient energy storage performance of electrochemical supercapacitors based on polyaniline/graphene nanocomposite electrodes,” Journal of Physics and Chemistry of Solids, vol. 154, article 110057, 2021.
View at: Publisher Site | Google Scholar
C.-Y. Kung, T.-L. Wang, H.-Y. Lin, and C.-H. Yang, “A high-performance covalently bonded self-doped polyaniline-graphene assembly film with superior stability for supercapacitors,” Journal of Power Sources, vol. 490, article 229538, 2021.
View at: Publisher Site | Google Scholar
A. Xu, W. Li, Y. Yu, Y. Zhang, Z. Liu, and Y. Qin, “Rational design of active layer configuration with parallel graphene/polyaniline composite films for high-performance supercapacitor electrode,” Electrochimica Acta, vol. 398, article 139330, 2021.
View at: Publisher Site | Google Scholar
A. S. Wasfi, N. I. Ibrahim, and H. O. Ismael, “Polyaniline/carbon nanotube composite supercapacitor electrodes synthesized by a microwave-plasma polymerization,” AIP Conference Proceedings, vol. 2372, no. 1, article 130017, 2021.
View at: Google Scholar
J. Dai, Y. Lv, J. Zhang et al., “Effect of morphology and phase engineering of MoS₂ on electrochemical properties of carbon nanotube/[email protected]₂ composites,” Journal of Colloid and Interface Science, vol. 590, pp. 591–600, 2021.
View at: Publisher Site | Google Scholar
M. Jasna, M. Manoj, A. Abhilash, P. S. Midhun, S. Jayalekshmi, and M. K. Jayaraj, “Polyaniline wrapped carbon nanotube/exfoliated MoS₂ nanosheet composite as a promising electrode for high power supercapacitors,” Carbon Trends, vol. 7, article 100154, 2022.
View at: Publisher Site | Google Scholar
H. S. Roy, M. M. Islam, M. Y. A. Mollah, and M. A. B. H. Susan, “Polyaniline-MnO₂ composites prepared in-situ during oxidative polymerization of aniline for supercapacitor applications,” Materials Today: Procedings, vol. 29, pp. 1013–1019, 2020.
View at: Publisher Site | Google Scholar
H. Heydari, M. Abdouss, S. Mazinani, A. M. Bazargan, and F. Fatemi, “Electrochemical study of ternary polyaniline/MoS₂−MnO₂ for supercapacitor applications,” Journal of Energy Storage, vol. 40, article 102738, 2021.
View at: Publisher Site | Google Scholar
M. B. Poudel, M. Shin, and H. J. Kim, “Polyaniline-silver-manganese dioxide nanorod ternary composite for asymmetric supercapacitor with remarkable electrochemical performance,” International Journal of Hydrogen Energy, vol. 46, no. 1, pp. 474–485, 2021.
View at: Publisher Site | Google Scholar
M. Wan, W. Zhou, Y. Li, and J. Liu, “Protonic doping in free-standing film of polyaniline,” Solid State Communications, vol. 81, no. 4, pp. 313–316, 1992.
View at: Publisher Site | Google Scholar
Y. Long, Z. Chen, J. Shen et al., “Magnetic properties of conducting polymer nanostructures,” The Journal of Physical Chemistry. B, vol. 110, no. 46, pp. 23228–23233, 2006.
View at: Publisher Site | Google Scholar
X. Lu, H. Mao, D. Chao, W. Zhang, and Y. Wei, “Ultrasonic synthesis of polyaniline nanotubes containing Fe₃O₄ nanoparticles,” Journal of Solid State Chemistry, vol. 179, no. 8, pp. 2609–2615, 2006.
View at: Publisher Site | Google Scholar
B. Dittrich, K.-A. Wartig, R. Mülhaupt, and B. Schartel, “Flame-retardancy properties of intumescent ammonium poly(phosphate) and mineral filler magnesium hydroxide in combination with graphene,” Polymers, vol. 6, no. 11, pp. 2875–2895, 2014.
View at: Publisher Site | Google Scholar
R. Gangopadhyay and A. De, “Conducting polymer nanocomposites: a brief overview,” Chemistry of Materials, vol. 12, no. 3, pp. 608–622, 2000.
View at: Publisher Site | Google Scholar
H. Bai, C. Li, and G. Shi, “Functional composite materials based on chemically converted graphene,” Advanced Materials, vol. 23, no. 9, pp. 1089–1115, 2011.
View at: Publisher Site | Google Scholar
A. A. B. Omran, A. A. B. A. Mohammed, S. M. Sapuan et al., “Micro- and nanocellulose in polymer composite materials: a review,” Polymers, vol. 13, no. 2, p. 231, 2021.
View at: Publisher Site | Google Scholar
K. Namsheer and C. S. Rout, “Conducting polymers: a comprehensive review on recent advances in synthesis, properties and applications,” RSC Advances, vol. 11, no. 10, pp. 5659–5697, 2021.
View at: Google Scholar
T. Sen, S. Mishra, and N. G. Shimpi, “Synthesis and sensing applications of polyaniline nanocomposites: a review,” RSC Advances, vol. 6, no. 48, pp. 42196–42222, 2016.
View at: Publisher Site | Google Scholar
B. Zhang, B. Zhao, S. Huang, R. Zhang, P. Xu, and H.-L. Wang, “One-pot interfacial synthesis of Au nanoparticles and Au–polyaniline nanocomposites for catalytic applications,” CrystEngComm, vol. 14, no. 5, pp. 1542–1544, 2012.
View at: Publisher Site | Google Scholar
N. V. Blinova, J. Stejskal, M. Trchova, I. Sapurina, and G. Ćirić-Marjanović, “The oxidation of aniline with silver nitrate to polyaniline-silver composites,” Polymer, vol. 50, no. 1, pp. 50–56, 2009.
View at: Publisher Site | Google Scholar
P. K. Khanna, N. Singh, S. Charan, and A. K. Viswanath, “Synthesis of Ag/polyaniline nanocomposite via an in situ photo-redox mechanism,” Materials Chemistry and Physics, vol. 92, no. 1, pp. 214–219, 2005.
View at: Publisher Site | Google Scholar
S. S. Barkade, J. B. Naik, and S. H. Sonawane, “Ultrasound assisted miniemulsion synthesis of polyaniline/Ag nanocomposite and its application for ethanol vapor sensing,” Colloids and Surfaces A: Physicochemical Engineering Aspects, vol. 378, no. 1–3, pp. 94–98, 2011.
View at: Publisher Site | Google Scholar
B. Gu, S. He, W. Zhou et al., “Polyaniline-supported iron catalyst for selective synthesis of lower olefins from syngas,” Journal of Energy Chemistry, vol. 26, no. 4, pp. 608–615, 2017.
View at: Publisher Site | Google Scholar
A. Houdayer, R. Schneider, D. Billaud, J. Ghanbaja, and J. Lambert, “New polyaniline/Ni(0) nanocomposites: synthesis, characterization and evaluation of their catalytic activity in Heck couplings,” Synthetic Metals, vol. 151, no. 2, pp. 165–174, 2005.
View at: Publisher Site | Google Scholar
Y. Zhang, J. Yin, K. Wang, P. Chen, and L. Ji, “Electrocatalysis and detection of nitrite on a polyaniline–Cu nanocomposite-modified glassy carbon electrode,” Journal of Applied Polymer Science, vol. 128, no. 5, pp. 2971–2976, 2013.
View at: Publisher Site | Google Scholar
L. Kong, X. Lu, E. Jin, S. Jiang, C. Wang, and W. Zhang, “Templated synthesis of polyaniline nanotubes with Pd nanoparticles attached onto their inner walls and its catalytic activity on the reduction of p-nitroanilinum,” Composites Science and Technology, vol. 69, no. 5, pp. 561–566, 2009.
View at: Publisher Site | Google Scholar
W. Cho, S.-J. Park, and S. Kim, “Effect of monomer concentration on interfacial synthesis of platinum loaded polyaniline nanocomplex using poly(styrene sulfonic acid),” Synthetic Metals, vol. 161, no. 21–22, pp. 2446–2450, 2011.
View at: Publisher Site | Google Scholar
A. S. Najibzad, R. Amini, M. Rostami, P. Kardar, and M. Fedel, “Active corrosion performance of magnesium by silane coatings reinforced with polyaniline/praseodymium,” Progress in Organic Coatings, vol. 140, article 105504, 2020.
View at: Publisher Site | Google Scholar
M. Alam, A. M. Siddiqui, and M. Husain, “Synthesis, characterization and properties of Se nanowires intercalated polyaniline/Se nanocomposites,” Express Polymer Letters, vol. 7, no. 9, 2013.
View at: Google Scholar
G. Sharma, M. Naushad, A. Kumar, S. Devi, and M. R. Khan, “Lanthanum/cadmium/polyaniline bimetallic nanocomposite for the photodegradation of organic pollutant,” Iranian Polymer Journal, vol. 24, no. 12, pp. 1003–1013, 2015.
View at: Publisher Site | Google Scholar
S. Sharma, S. Singh, and N. Khare, “Synthesis of polyaniline/CdS (nanoflowers and nanorods) nanocomposites: a comparative study towards enhanced photocatalytic activity for degradation of organic dye,” Colloid & Polymer Science, vol. 294, no. 5, pp. 917–926, 2016.
View at: Publisher Site | Google Scholar
J. B. Bhaiswar, M. Y. Salunkhe, S. P. Dongre, and B. T. Kumbhare, “Comparative study on thermal stability and optical properties of PANI/CdS and PANI/PbS nanocomposite,” IOSR Journal of Applied Physics, vol. 80, pp. 79–82, 2014.
View at: Google Scholar
P. Boomi and H. G. Prabu, “Synthesis, characterization and antibacterial analysis of polyaniline/Au–Pd nanocomposite,” Colloids and Surfaces A: Physicochemical Engineering Aspects, vol. 429, pp. 51–59, 2013.
View at: Publisher Site | Google Scholar
C. Yang, W. Dong, G. Cui et al., “Enhanced photocatalytic activity of PANI/TiO₂ due to their photosensitization-synergetic effect,” Electrochimica Acta, vol. 247, pp. 486–495, 2017.
View at: Publisher Site | Google Scholar
J. Husain, N. Reddy, A. Begum et al., “Conductivity and LPG sensing behavior of PANI/MgO nano composites thin films,” Materials Today: Procedings, vol. 46, pp. 410–412, 2021.
View at: Publisher Site | Google Scholar
V. Gilja, I. Vrban, V. Mandić, M. Žic, and Z. Hrnjak-Murgić, “Preparation of a PANI/ZnO composite for efficient photocatalytic degradation of acid blue,” Polymers, vol. 10, no. 9, p. 940, 2018.
View at: Publisher Site | Google Scholar
A. Auliya, R. Deswara, M. Paristiowati, and S. Budi, “Electrodeposition of PANI-NiO as electrode for deionization K⁺ and Cl,” Chemistry of Materials, vol. 1, no. 1, pp. 1–6, 2022.
View at: Google Scholar
V. S. Sumi, S. R. Arunima, M. J. Deepa et al., “PANI-Fe₂O₃ composite for enhancement of active life of alkyd resin coating for corrosion protection of steel,” Materials Chemistry and Physics, vol. 247, article 122881, 2020.
View at: Publisher Site | Google Scholar
T. Sen, N. G. Shimpi, S. Mishra, and R. Sharma, “Polyaniline/γ-Fe₂O₃ nanocomposite for room temperature LPG sensing,” Sensors and Actuators B: Chemical, vol. 190, pp. 120–126, 2014.
View at: Publisher Site | Google Scholar
Z. Yang, L. Tang, J. Ye, D. Shi, S. Liu, and M. Chen, “Hierarchical nanostructured α-Fe₂O₃/polyaniline anodes for high performance supercapacitors,” Electrochimica Acta, vol. 269, pp. 21–29, 2018.
View at: Publisher Site | Google Scholar
S. M. Ambalagi, M. Devendrappa, S. Nagaraja, and B. Sannakki, “Dielectric properties of PANI/CuO nanocomposites,” IOP Conference Series: Materials Science and Engineering, vol. 310, no. 1, p. 12081, 2018.
View at: Publisher Site | Google Scholar
Y. Fan, H. Chen, Y. Li, D. Cui, Z. Fan, and C. Xue, “PANI-Co₃O₄ with excellent specific capacitance as an electrode for supercapacitors,” Ceramics International, vol. 47, no. 6, pp. 8433–8440, 2021.
View at: Publisher Site | Google Scholar
C. Sridhar, N. Gunvanthrao Yernale, and M. V. N. Prasad, “Synthesis, spectral characterization, and antibacterial and antifungal studies of PANI/V₂O₅ nanocomposites,” International Journal of Chemical Engineering, vol. 2016, p. 6, 2016.
View at: Publisher Site | Google Scholar
P. R. Deshmukh, R. N. Bulakhe, S. N. Pusawale, S. D. Sartale, and C. D. Lokhande, “Polyaniline–RuO composite for high performance supercapacitors: chemical synthesis and properties,” RSC Advances, vol. 5, no. 36, pp. 28687–28695, 2015.
View at: Publisher Site | Google Scholar
Q. Feng, H. Zhang, Y. Shi, X. Yu, and G. Lan, “Preparation and gas sensing properties of PANI/SnO₂ hybrid material,” Polymers, vol. 13, no. 9, p. 1360, 2021.
View at: Publisher Site | Google Scholar
S. R. Jamnani, H. M. Moghaddam, S. G. Leonardi, and G. Neri, “PANI/Sm₂O₃ nanocomposite sensor for fast hydrogen detection at room temperature,” Synthetic Metals, vol. 268, article 116493, 2020.
View at: Publisher Site | Google Scholar
M. Nallappan and M. Gopalan, “Fabrication of CeO₂/PANI composites for high energy density supercapacitors,” Materials Research Bulletin, vol. 106, pp. 357–364, 2018.
View at: Publisher Site | Google Scholar
J. Zhu, S. Wei, L. Zhang et al., “Electrical and dielectric properties of polyaniline–Al₂O₃ nanocomposites derived from various Al₂O₃ nanostructures,” Journal of Materials Chemistry, vol. 21, no. 11, pp. 3952–3959, 2011.
View at: Publisher Site | Google Scholar
R. Wu, H. Yuan, C. Liu, J.-L. Lan, X. Yang, and Y.-H. Lin, “Flexible PANI/SWCNT thermoelectric films with ultrahigh electrical conductivity,” RSC Advances, vol. 8, no. 46, pp. 26011–26019, 2018.
View at: Publisher Site | Google Scholar
M. H. Suhail, O. G. Abdullah, and G. A. Kadhim, “Hydrogen sulfide sensors based on PANI/f-SWCNT polymer nanocomposite thin films prepared by electrochemical polymerization,” Journal of Science: Advanced Materials and Devices, vol. 4, no. 1, pp. 143–149, 2019.
View at: Publisher Site | Google Scholar
D. Maity, M. Manoharan, and R. T. Rajendra Kumar, “Development of the PANI/MWCNT nanocomposite-based fluorescent sensor for selective detection of aqueous ammonia,” ACS Omega, vol. 5, no. 15, pp. 8414–8422, 2020.
View at: Publisher Site | Google Scholar
G. Otrokhov, D. Pankratov, G. Shumakovich et al., “Enzymatic synthesis of polyaniline/multi-walled carbon nanotube composite with core shell structure and its electrochemical characterization for supercapacitor application,” Electrochimica Acta, vol. 123, pp. 151–157, 2014.
View at: Publisher Site | Google Scholar
Y. Huang, J. Lu, S. Kang, D. Weng, L. Han, and Y. Wang, “Synthesis and application of MnO₂/PANI/MWCNT ternary nanocomposite as an electrode material for supercapacitors,” International Journal of Electrochemical Science, vol. 14, pp. 9298–9310, 2019.
View at: Google Scholar
L. Ouyang, Y. Wang, P. Zhang, X. Wang, and S. Yuan, “Heterostructured MWCNTs@PANI@TiO₂ nanocomposites for enhanced adsorption of As(III) from aqueous solution: adsorption and photocatalytic oxidation behaviors,” Industrial and Engineering Chemistry Research, vol. 59, no. 25, pp. 11743–11756, 2020.
View at: Publisher Site | Google Scholar
I. Chakraborty, N. Chakrabarty, A. Senapati, and A. K. Chakraborty, “CuO@ NiO/polyaniline/MWCNT nanocomposite as high-performance electrode for supercapacitor,” Journal of Physical Chemistry C, vol. 122, no. 48, pp. 27180–27190, 2018.
View at: Publisher Site | Google Scholar
D. Shao, G. Hou, J. Li, T. Wen, X. Ren, and X. Wang, “PANI/GO as a super adsorbent for the selective adsorption of uranium(VI),” Chemical Engineering Journal, vol. 255, pp. 604–612, 2014.
View at: Publisher Site | Google Scholar
B. Vellaichamy, P. Periakaruppan, and S. K. Ponnaiah, “A new in-situ synthesized ternary CuNPs-PANI-GO nano composite for selective detection of carcinogenic hydrazine,” Sensors and Actuators B: Chemical, vol. 245, pp. 156–165, 2017.
View at: Publisher Site | Google Scholar
J. Zhang, H. Bi, G. He, Y. Zhou, and H. Chen, “Fabrication of Ag₃PO₄−PANI−GO composites with high visible light photocatalytic performance and stability,” Journal of Environmental Chemical Engineering, vol. 2, no. 2, pp. 952–957, 2014.
View at: Publisher Site | Google Scholar
S. Palsaniya, H. B. Nemade, and A. K. Dasmahapatra, “Hierarchical PANI-RGO-ZnO ternary nanocomposites for symmetric tandem supercapacitor,” Journal of Physics and Chemistry of Solids, vol. 154, article 110081, 2021.
View at: Publisher Site | Google Scholar
L. Wang, Q. Yao, H. Bi, F. Huang, Q. Wang, and L. Chen, “PANI/graphene nanocomposite films with high thermoelectric properties by enhanced molecular ordering,” Journal of Materials Chemistry A, vol. 3, no. 13, pp. 7086–7092, 2015.
View at: Publisher Site | Google Scholar
S. Zhang, B.-Q. Li, and J.-B. Zheng, “An electrochemical sensor for the sensitive determination of nitrites based on Pt–PANI–graphene nanocomposites,” Analytical Methods, vol. 7, no. 19, pp. 8366–8372, 2015.
View at: Publisher Site | Google Scholar
S. Xiong, F. Yang, H. Jiang, J. Ma, and X. Lu, “Covalently bonded polyaniline/fullerene hybrids with coral-like morphology for high-performance supercapacitor,” Electrochimica Acta, vol. 85, pp. 235–242, 2012.
View at: Publisher Site | Google Scholar
J. Zhu, M. Chen, H. Qu et al., “Interfacial polymerized polyaniline/graphite oxide nanocomposites toward electrochemical energy storage,” Polymer, vol. 53, no. 25, pp. 5953–5964, 2012.
View at: Publisher Site | Google Scholar
C. Meng, O. Z. Gall, and P. P. Irazoqui, “A flexible super-capacitive solid-state power supply for miniature implantable medical devices,” Biomedical Microdevices, vol. 15, no. 6, pp. 973–983, 2013.
View at: Publisher Site | Google Scholar
J. H. Park, O. O. Park, K. H. Shin, C. S. Jin, and J. H. Kim, “An electrochemical capacitor based on a Ni(OH)₂/activated carbon composite electrode,” Electrochemical and Solid-State Letters, vol. 5, no. 2, p. H7, 2002.
View at: Google Scholar
A. S. Arico, P. Bruce, B. Scrosati, J.-M. Tarascon, and W. Van Schalkwijk, “Nanostructured materials for advanced energy conversion and storage devices,” Materials for Sustainable Energy, pp. 148–159, 2010.
View at: Google Scholar
G. Wang, L. Zhang, and J. Zhang, “A review of electrode materials for electrochemical supercapacitors,” Chemical Society Reviews, vol. 41, no. 2, pp. 797–828, 2012.
View at: Publisher Site | Google Scholar
D. S. Dhawale, A. Vinu, and C. D. Lokhande, “Stable nanostructured polyaniline electrode for supercapacitor application,” Electrochimica Acta, vol. 56, no. 25, pp. 9482–9487, 2011.
View at: Publisher Site | Google Scholar
V. Gupta and N. Miura, “Electrochemically deposited polyaniline nanowire’s network: a high-performance electrode material for redox supercapacitor,” Electrochemical and Solid-State Letters, vol. 8, no. 12, p. A630, 2005.
View at: Publisher Site | Google Scholar
H. Guan, L.-Z. Fan, H. Zhang, and X. Qu, “Polyaniline nanofibers obtained by interfacial polymerization for high-rate supercapacitors,” Electrochimica Acta, vol. 56, no. 2, pp. 964–968, 2010.
View at: Publisher Site | Google Scholar
P. Bandyopadhyay, T. Kuila, J. Balamurugan, T. T. Nguyen, N. H. Kim, and J. H. Lee, “Facile synthesis of novel sulfonated polyaniline functionalized graphene using m-aminobenzene sulfonic acid for asymmetric supercapacitor application,” Chemical Engineering Journal, vol. 308, pp. 1174–1184, 2017.
View at: Publisher Site | Google Scholar
J. Shen, C. Yang, X. Li, and G. Wang, “High-performance asymmetric supercapacitor based on nanoarchitectured polyaniline/graphene/carbon nanotube and activated graphene electrodes,” ACS Applied Materials & Interfaces, vol. 5, no. 17, pp. 8467–8476, 2013.
View at: Publisher Site | Google Scholar
D. Li, Y. Li, Y. Feng, W. Hu, and W. Feng, “Hierarchical graphene oxide/polyaniline nanocomposites prepared by interfacial electrochemical polymerization for flexible solid-state supercapacitors,” Journal of Materials Chemistry A, vol. 3, no. 5, pp. 2135–2143, 2015.
View at: Publisher Site | Google Scholar
M. Zhang, X. Wang, T. Yang et al., “Polyaniline/graphene hybrid fibers as electrodes for flexible supercapacitors,” Synthetic Metals, vol. 268, article 116484, 2020.
View at: Publisher Site | Google Scholar
M. N. Rantho, M. J. Madito, and N. Manyala, “High-performance symmetric supercapacitor device based on carbonized iron-polyaniline/nickel graphene foam,” Journal of Alloys and Compounds, vol. 819, article 152993, 2020.
View at: Publisher Site | Google Scholar
A. Jayakumar, Y.-J. Yoon, R. Wang, and J.-M. Lee, “Novel graphene/polyaniline/MnO_x 3D-hydrogels obtained by controlled morphology of MnO_x in the graphene/polyaniline matrix for high performance binder-free supercapacitor electrodes,” RSC Advances, vol. 5, no. 114, pp. 94388–94396, 2015.
View at: Publisher Site | Google Scholar
A. Gupta, S. Sardana, J. Dalal et al., “Nanostructured polyaniline/graphene/Fe₂O₃ composites hydrogel as a high-performance flexible supercapacitor electrode material,” ACS Applied Energy Materials, vol. 3, no. 7, pp. 6434–6446, 2020.
View at: Publisher Site | Google Scholar
H. Su, T. Wang, S. Zhang et al., “Facile synthesis of polyaniline/TiO₂/graphene oxide composite for high performance supercapacitors,” Solid State Sciences, vol. 14, no. 6, pp. 677–681, 2012.
View at: Publisher Site | Google Scholar
B. Dong, B.-L. He, C.-L. Xu, and H.-L. Li, “Preparation and electrochemical characterization of polyaniline/multi-walled carbon nanotubes composites for supercapacitor,” Materials Science and Engineering B, vol. 143, no. 1–3, pp. 7–13, 2007.
View at: Publisher Site | Google Scholar
K. R. Prasad and N. Miura, “Polyaniline-MnO₂ composite electrode for high energy density electrochemical capacitor,” Electrochemical and Solid-State Letters, vol. 7, no. 11, p. A425, 2004.
View at: Publisher Site | Google Scholar
Y. Huang, S. Bao, and J. Lu, “Flower-like MnO₂/polyaniline/hollow mesoporous silica as electrode for high-performance all-solid-state supercapacitors,” Journal of Alloys and Compounds, vol. 845, article 156192, 2020.
View at: Publisher Site | Google Scholar
Z.-A. Hu, Y.-L. Xie, Y.-X. Wang, L.-P. Mo, Y.-Y. Yang, and Z.-Y. Zhang, “Polyaniline/SnO₂ nanocomposite for supercapacitor applications,” Materials Chemistry and Physics, vol. 114, no. 2–3, pp. 990–995, 2009.
View at: Publisher Site | Google Scholar
M.-H. Bai, T.-Y. Liu, F. Luan, Y. Li, and X.-X. Liu, “Electrodeposition of vanadium oxide–polyaniline composite nanowire electrodes for high energy density supercapacitors,” Journal of Materials Chemistry A, vol. 2, no. 28, pp. 10882–10888, 2014.
View at: Publisher Site | Google Scholar
K.-J. Huang, L. Wang, Y.-J. Liu, H.-B. Wang, Y.-M. Liu, and L.-L. Wang, “Synthesis of polyaniline/2-dimensional graphene analog MoS₂ composites for high-performance supercapacitor,” Electrochimica Acta, vol. 109, pp. 587–594, 2013.
View at: Publisher Site | Google Scholar
M. A. Arvizu, F. J. González, A. Romero-Galarza, F. J. Rodríguez-Varela, C. R. Garcia, and M. A. Garcia-Lobato, “Symmetric supercapacitors of PANI coated RuO₂/TiO₂ macroporous structures prepared by electrostatic spray deposition,” Journal of the Electrochemical Society, vol. 169, no. 2, p. 20564, 2022.
View at: Publisher Site | Google Scholar
A. G. Tabrizi, N. Arsalani, Z. Naghshbandi, L. S. Ghadimi, and A. Mohammadi, “Growth of polyaniline on rGO-Co₃S₄ nanocomposite for high-performance supercapacitor energy storage,” International Journal of Hydrogen Energy, vol. 43, no. 27, pp. 12200–12210, 2018.
View at: Publisher Site | Google Scholar
A. K. Das, S. K. Karan, and B. B. Khatua, “High energy density ternary composite electrode material based on polyaniline (PANI), molybdenum trioxide (MoO₃) and graphene nanoplatelets (GNP) prepared by sono-chemical method and their synergistic contributions in superior supercapacitive performance,” Electrochimica Acta, vol. 180, pp. 1–15, 2015.
View at: Publisher Site | Google Scholar
L. E. Kreno, K. Leong, O. K. Farha, M. Allendorf, R. P. Van Duyne, and J. T. Hupp, “Metal–organic framework materials as chemical sensors,” Chemical Reviews, vol. 112, no. 2, pp. 1105–1125, 2012.
View at: Publisher Site | Google Scholar
S. I. Abd Razak, I. F. Wahab, F. Fadil, F. N. Dahli, A. Z. Md Khudzari, and H. Adeli, “A review of electrospun conductive polyaniline based nanofiber composites and blends: processing features, applications, and future directions,” Advances in Materials Science and Engineering, vol. 2015, p. 19, 2015.
View at: Publisher Site | Google Scholar
M. D. Shirsat, M. A. Bangar, M. A. Deshusses, N. V. Myung, and A. Mulchandani, “Polyaniline nanowires-gold nanoparticles hybrid network based chemiresistive hydrogen sulfide sensor,” Applied Physics Letters, vol. 94, no. 8, p. 83502, 2009.
View at: Publisher Site | Google Scholar
J.-S. Do and W.-B. Chang, “Amperometric nitrogen dioxide gas sensor based on PAn/Au/Nafion^® prepared by constant current and cyclic voltammetry methods,” Sensors and Actuators B: Chemical, vol. 101, no. 1–2, pp. 97–106, 2004.
View at: Publisher Site | Google Scholar
S. G. Pawar, M. A. Chougule, S. Sen, and V. B. Patil, “Development of nanostructured polyaniline–titanium dioxide gas sensors for ammonia recognition,” Journal of Applied Polymer Science, vol. 125, no. 2, pp. 1418–1424, 2012.
View at: Publisher Site | Google Scholar
X. Liu, N. Chen, B. Han et al., “Nanoparticle cluster gas sensor: Pt activated SnO₂ nanoparticles for NH₃ detection with ultrahigh sensitivity,” Nanoscale, vol. 7, no. 36, pp. 14872–14880, 2015.
View at: Publisher Site | Google Scholar
N. J. Pineau, S. D. Keller, A. T. Güntner, and S. E. Pratsinis, “Palladium embedded in SnO₂ enhances the sensitivity of flame-made chemoresistive gas sensors,” Microchimica Acta, vol. 187, no. 1, pp. 1–9, 2020.
View at: Publisher Site | Google Scholar
M. Parthibavarman, B. Renganathan, and D. Sastikumar, “Development of high sensitivity ethanol gas sensor based on Co-doped SnO₂ nanoparticles by microwave irradiation technique,” Current Applied Physics, vol. 13, no. 7, pp. 1537–1544, 2013.
View at: Publisher Site | Google Scholar
L. Wang, H. Huang, S. Xiao et al., “Enhanced sensitivity and stability of room-temperature NH₃ sensors using core–shell CeO₂ nanoparticles@cross-linked PANI with p–n heterojunctions,” ACS Applied Materials & Interfaces, vol. 6, no. 16, pp. 14131–14140, 2014.
View at: Publisher Site | Google Scholar
N. R. Tanguy, M. Thompson, and N. Yan, “A review on advances in application of polyaniline for ammonia detection,” Sensors and Actuators B: Chemical, vol. 257, pp. 1044–1064, 2018.
View at: Publisher Site | Google Scholar
I. Fratoddi, I. Venditti, C. Cametti, and M. V. Russo, “Chemiresistive polyaniline-based gas sensors: a mini review,” Sensors and Actuators B: Chemical, vol. 220, pp. 534–548, 2015.
View at: Publisher Site | Google Scholar
A. L. Kukla, Y. M. Shirshov, and S. A. Piletsky, “Ammonia sensors based on sensitive polyaniline films,” Sensors and Actuators B: Chemical, vol. 37, no. 3, pp. 135–140, 1996.
View at: Publisher Site | Google Scholar
P. Lobotka, P. Kunzo, E. Kovacova et al., “Thin polyaniline and polyaniline/carbon nanocomposite films for gas sensing,” Thin Solid Films, vol. 519, no. 12, pp. 4123–4127, 2011.
View at: Publisher Site | Google Scholar
A. Roy, A. Ray, P. Sadhukhan et al., “Polyaniline-multiwalled carbon nanotube (PANI-MWCNT): room temperature resistive carbon monoxide (CO) sensor,” Synthetic Metals, vol. 245, pp. 182–189, 2018.
View at: Publisher Site | Google Scholar
J.-H. Lim, N. Phiboolsirichit, S. Mubeen, M. A. Deshusses, A. Mulchandani, and N. V. Myung, “Electrical and gas sensing properties of polyaniline functionalized single-walled carbon nanotubes,” Nanotechnology, vol. 21, no. 7, p. 75502, 2010.
View at: Publisher Site | Google Scholar
T. Sen, N. G. Shimpi, and S. Mishra, “Room temperature CO sensing by polyaniline/Co₃O₄ nanocomposite,” Journal of Applied Polymer Science, vol. 133, no. 42, 2016.
View at: Publisher Site | Google Scholar
S. G. Pawar, S. L. Patil, M. A. Chougule et al., “New method for fabrication of CSA doped PANi-TiO₂ thin-film ammonia sensor,” IEEE Sensors Journal, vol. 11, no. 11, pp. 2980–2985, 2011.
View at: Publisher Site | Google Scholar
N. G. Deshpande, Y. G. Gudage, R. Sharma, J. C. Vyas, J. B. Kim, and Y. P. Lee, “Studies on tin oxide-intercalated polyaniline nanocomposite for ammonia gas sensing applications,” Sensors and Actuators B: Chemical, vol. 138, no. 1, pp. 76–84, 2009.
View at: Publisher Site | Google Scholar
D. Zhang, Z. Wu, and X. Zong, “Flexible and highly sensitive H₂S gas sensor based on in-situ polymerized SnO₂/rGO/PANI ternary nanocomposite with application in halitosis diagnosis,” Sensors and Actuators B: Chemical, vol. 289, pp. 32–41, 2019.
View at: Publisher Site | Google Scholar
Y. Li, Y. Wang, X. Jing, and R. Zhu, “Early stage pH profile: the key factor controlling the construction of polyaniline micro/nanostructures,” Journal of Polymer Research, vol. 18, no. 6, pp. 2119–2131, 2011.
View at: Publisher Site | Google Scholar
J. Qi, X. Xu, X. Liu, and K. T. Lau, “Fabrication of textile based conductometric polyaniline gas sensor,” Sensors and Actuators B: Chemical, vol. 202, pp. 732–740, 2014.
View at: Publisher Site | Google Scholar
X. L. Huang, N. T. Hu, Y. Y. Wang, and Y. F. Zhang, “Ammonia gas sensor based on aniline reduced graphene oxide,” Advanced Materials Research, vol. 669, pp. 79–84, 2013.
View at: Publisher Site | Google Scholar
A. A. Athawale and P. P. Katre, “Ag dispersed conducting polyaniline nanocomposite as a selective sensor for ammonia,” Journal of Metastable and Nanocrystalline Materials, vol. 23, pp. 323–326, 2005.
View at: Publisher Site | Google Scholar
J.-S. Do and S.-H. Wang, “On the sensitivity of conductimetric acetone gas sensor based on polypyrrole and polyaniline conducting polymers,” Sensors and Actuators B: Chemical, vol. 185, pp. 39–46, 2013.
View at: Publisher Site | Google Scholar
H.-D. Zhang, C. C. Tang, Y. Z. Long et al., “High-sensitivity gas sensors based on arranged polyaniline/PMMA composite fibers,” Sensors and Actuators A: Physical, vol. 219, pp. 123–127, 2014.
View at: Publisher Site | Google Scholar
H. Tai, Y. Jiang, G. Xie, and J. Yu, “Preparation, characterization and comparative NH₃-sensing characteristic studies of PANI/inorganic oxides nanocomposite thin films,” Journal of Materials Science and Technology, vol. 26, no. 7, pp. 605–613, 2010.
View at: Publisher Site | Google Scholar
V. V. Chabukswar, S. Pethkar, and A. A. Athawale, “Acrylic acid doped polyaniline as an ammonia sensor,” Sensors and Actuators B: Chemical, vol. 77, no. 3, pp. 657–663, 2001.
View at: Publisher Site | Google Scholar

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Copyright © 2022 Abdulwahhab H. Majeed et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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