International Scholarly Research Notices

Review Article

Copper Oxide Nanomaterials Prepared by Solution Methods, Some Properties, and Potential Applications: A Brief Review

Table 1

Summary on the effect of starting materials, solvents, and surfactants on morphology of CuO nanostructures.
MorphologySizeSolventStarting materialsSurfactantMethodReference
Hierarchical superstructureDiameter: 200 nm; length: 600 nm
SEM		Distilled waterCu(CH3COO)2 NaOH Ethylene diamine-te tra-acetic acid disodiumSonochemical[11]
Cubic 230 nm Water Cu(CH3COO)2 NaOH Without surfactant Microwave [18]
Sphere 40 nm, 90 nm, and 140 nm (as the concentration of salt increases)Ethylene glycol PVP, CTAB
Nanoparticle50 nm
XRD		WaterCuCl2, NH4OHThiourea Chemical and annealing[63]
Nanoparticle5–8 nm
TEM and XRD		EthanolCu(CH3COO)2 NaOH, methanol, and NH4OHNoAlcothermal [64]
Nanoparticle44 nm (XRD)
80 nm (TEM)		Deionized (DI) waterCu(NO3)2Citric
Acid; ethylene glycol 		Sol-gel [65]
Nanorod Diameter: 50–100 nm
Length: microns		2-PropanolCu(NO3)2NoSolvothermal [50]
NanosheetWidth: 1-2 mm; thickness: 20 nmEthanol
Nanoparticle22 nmDeionized waterCuSO4Ascorbic acid
NaBH4 		Chemical reduction [66]
10 nmEthylene glycolPVP
Flower-like 400~600 nmDeionized WaterCu(CH3COO)2NoHydrolyzing method[67]
Nanoparticle3–9 nm (XRD)
11 nm (TEM)		Alcohol Cu(CH3COO)2NoAlcohol thermal[68]
NanoplateletLengths: 4-5 μm; thickness: 65–80 nm (SEM)1-Butyl-3-methyl 
imidazolium tetrafluoroborate 
BMIM]BF		Cu(NO3)2 
NaOH		([BMIM]BF4).
It serves both as solvent and as surfactant		Hydrothermal[69]
NanoneedleLength ~100 nm 
Diameter 10–20 nm (TEM)		WaterCu(NO3)2 
NaOH		Oleic acid
Sodium oleate		Coprecipitation[70]
NanobeltLength: 2.5–5 μm
Width: 150–200 nm		Distilled water CuSO4 
NaOH		H2O2Hydrothermal[71]
Nanoparticle100 nm (SEM)Ethylene glycolCu(CH3COO)2 ureaNoMicrowave [72]