Research Article
Polyaniline Supported Ag-Doped ZnO Nanocomposite: Synthesis, Characterization, and Kinetics Study for Photocatalytic Degradation of Malachite Green
Table 3
Comparison of polyaniline/Ag-ZnO nanocomposite for degradation of MG by various catalysts.
| | Catalyst | Reaction condition | Degradation efficiency | Reference |
| | Fe3+/H2O2 (fenton-like oxidation) | (MG) = 3 × 10−5 M, (Fe3+) = 1.0 × 10−3 M, (H2O2) = 5 × 10−2 M, pH = 3. Under visible light irradiation. | 95% of MG in 120 min | [2] | | Electrospun P (3HB)-TiO2 | 4 g of TiO2 in 100 mL of 4 w/v% P(3HB). Under UV light illumination | 98% of MG with in less than 2h | [3] | | Nanosized Ce-Cd oxide | (MG) = 2.50 × 10−5 M; pH = 8.0 with light intensity 600 Wm−2; and catalyst loading 0.03 g/50 mL. | - | [4] | | Bi2WO6 | (Bi2WO6) = 1.0 g·L−1; (MG)= 10 mg L−1; pH = 2 under visible light illumination. | The degradation efficiency 98.9% in 30 min | [5] | | Microbial consortium CM-4 | pH = 7.5 at with UV light; no correlation between the percentage of decolorization and COD removal. | 99% within 2 h | [6] | | TiO2 and ZnO nanoparticles | UV lamp (200–600 nm). | TiO2 (49.35%) and ZnO (23.31%.) | [7] | | CA/TiO2 bio-nanocomposites | (MG) = 10 ppm, pH = 7 using visible light. | 99.5% in 240 min | [8] | | Polyaniline/Ag-ZnO nanocomposite | Catalyst load = 0.2 g, pH = 8 initial concentration of MG = 0.2 g/l, and irradiation time = 120 min using visible light with light intensity 120 Wm−2. | 98.58 with 120 min | This work |
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