Comparative Study On The Photocatalytic Degradation Of Malachite Green Using Zinc Oxide Under Different Sources Of Radiation
Tesfaye Teka, Aynalem Reda
Keywords: Advanced oxidation processes, irradiation source, Photocatalysis, Zinc Oxide
Abstract: Commercial ZnO was used as a catalyst for the degradation of malachite green in aqueous solution. The catalyst was tested under different light sources (dark, visible lamp and solar radiation). The photocatalytic degradation efficiency of the catalyst for the adsorbed malachite green was found to be higher effective (88%) under solar irradiation than visible irradiation (80%) considering both at the same time of irradiation. The photocatalytic degradation efficiency of the catalyst for the adsorbed malachite green in dark was found to be least effective. This implies that ZnO can use for degradation of organic pollutants simply in the presence of sun light.
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