Research Article
Photocatalytic Degradation of Methyl Green Dye Mediated by Pure and Mn-Doped Zinc Oxide Nanoparticles under Solar Light Irradiation
Table 2
Comparison of photocatalytic performance of synthesized photocatalysts with literature.
| | Light source (time) | Pollutant dye (concentration) | Photocatalyst | Catalyst amount | Rate constant () | Degradation efficiency | Ref. |
| | UV (60 min) | Malachite green (15 ppm) | Ni-doped ZnO
(6 wt. %) | 0.1 g/L | 0.0042 min-1 | 76% | [92] | | UV (120 min) | Methyl green (40 ppm) | Nickel-dimethylglyoxime/ZSM-5 zeolite | 0.6 g/L | 0.036 min-1 | 76.5% | [93] | | Visible (50 min) | Methyl green | Cu-doped ZnO (5 wt. %) | — | 0.04 min-1 | 75% | [94] | | UV (50 min) | Methyl green | Tb-doped ZnO (1 wt. %) | — | 0.022 min-1 | 77% | [95] | | UV (120 min) | Methylene blue (10 ppm) | Mn-doped ZnO (2 wt. %) | 0.3 g/L | 0.03 min-1 | 99% | [82] | | Natural sunlight (240 min) | Congo red (100 ppm) | Mn-doped ZnO (7 wt. %) | 1 g/L | 0.0089 min−1 | 87% | [24] | | Natural sunlight (60 min) | Methyl green (20 ppm) | Pure ZnO | 0.1 g/L | 0.01792 min-1 | 62.78% | Present study | | Natural sunlight (60 min) | Methyl green (20 ppm) | Mn-doped ZnO (2 wt. %) | 0.1 g/L | 0.02072 min-1 | 66.44% | Present study |
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