Abstract
CdS nanoparticles (NPs), ZnO layers, and CdS/ZnO composite were successfully prepared by a two-step chemical method. From the analysis of XRD, cubic CdS and the hexagonal ZnO phase were described for the synthesized samples. The CdS/ZnO composite exhibited larger surface area (99.9 m2 g−1) than pure CdS NPs (50.5 m2 g−1) and ZnO layers (67.3 m2 g−1), respectively. The band gap energies evaluated from the DRS results were 3.40, 2.13 and 1.78 eV for pure ZnO, CdS and CdS/ZnO composite respectively. The photocatalytic activity of the prepared materials was studied by the degradation of dye in aqueous solution under UV–Visible light exposure. CdS/ZnO composite exhibited the superior photocatalytic activity than ZnO and CdS. The photocatalytic performance was achieved 91.5% degradation in composite sample.
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