| Nanomaterials | Pollutant | Reaction conditions | Removal efficiency (%) | References |
| MnTiO3/TiO2 | MB dye | Visible light irradiation, 0.005 g of MnTiO3/TiO2, pH 6.4, 1 × 105− M of MB dye, 240 min | 75 | [40] | Iron titanate (Fe2TiO5) | MB dye | Natural sunlight, 50 mg of Fe2TiO5, 10 mg/L of MB dye, 250 min | >50 | [56] | Zirconium oxide nanoparticles (ZrO2 NPs) | MB dye | Solar irradiation, within 5 h | 89.11 | [72] | Doped zinc oxide nanoparticles | MB dye | Solar irradiation, pH 9, 10 ppm of MB dye, 100 mg/L of nanoparticle dose 2 hours | 80 | [73] | Tungsten trioxide (WO3) | MB dye | Xenon light, 2.5 hours | | [58] | ZnO | MB dye | UV irradiation, ZnO dosage of 250 mg/L, pH 10, 20 mg/L of MB, 2 hours | 85 | [41] | CeO2 NPs/graphene oxide/polyacrylamide composite | MB dye | UV light, 2.5 mg of CeO2, pH 12, 5 mg/L of MB, 90 min | 90 | [74] | ZnO-NPs | MB dye | UV irradiation, 10 mg/L of MB, pH 2, 1.8 g/L of ZnO NPs 140 min | 86 | [59] | 2% Fe-ZnO | MB dye | UV irradiation, 10 mg/L of MB dye, 1.8 g/L of 2% Fe-ZnO, irradiation time 140 min, pH 2 | 92 | [59] | CuO-NPs | MB dye | Visible light, 0.1 g of CuO, 10 ppm of MB, pH 9, 120 minutes | 63.44 | [54] | Iron oxide nanoparticles (Fe3O4) | MB dye | UV light, pH 7, 60 min | 25 | [75] | pH 12, 60 min | 99 | pH 3, 60 min | 18 | Parthenium hysterophorus-mediated ZnO NPs | MB dye | 50 mg of ZnO NPs, 5 mg/L of MB, 1 mL of H2O2, 150 min | 44.52 | This study | 2.5 mg/L of MB, 10 mg of ZnO NPs, 1 mL of H2O2, 150 min | 35.03 | 5 mg/L of MB, 10 mg of ZnO NPs, pH 4, 1 mL of H2O2, 150 min | 29.91 | 5 mg/L of MB, 10 mg of ZnO NPs, pH 8, 1 mL of H2O2, 150 min | 45.34 | 5 mg/L of MB, 10 mg of ZnO NPs, 65°C, 150 min | 53.08 | 50 mg of ZnO NPs, 5 mg/L of MB, pH 12, 65°C, 1 mL of H2O2, 32 min | 55.69 |
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