Abstract

  A comparative study was made on photocatalytic activity of ZnO, ZnS and their composite. A simple mechanochemical method was used for preparation of composite. The photocatalytic efficiency of ZnO-ZnS composite was compared with pure ZnO and ZnS. The effect of various parameters such as pH, dye concentration, semiconductor amount and light intensity was observed. The optimum conditions for this degradation were obtained as: Rose Bengal = 7.0 × 10^-6M, pH = 7.5, amount of composite = 0.08g and light intensity = 60.0 mWcm^-2. It was found that coupled chalcogenide ZnO-ZnS show better photocatalytic activity as compared with ZnO and ZnS alone for the degradation of rose Bengal in the presence of visible light.

Keywords:ZnO; ZnS; Composite; Photocatalytic Activity; Rose Bengal

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Citation

Citation: Basant Kumar Menariya. “A Comparative Study on Photocatalytic Activity of ZnO, ZnS and ZnO-ZnS Composite". Acta Scientific Pharmaceutical Sciences 4.5 (2020): 05-10.