Improved photocatalytic activity of ZnO by modification with CuO
Abstract
ZnO was modified by CuO via a facile method, in which ZnO was grown on available CuO using microwave reaction system. The obtained composite, denoted as ZnO/CuO, was characterized by X-Ray Diffraction, scanning electron microscopy, Transmission Electron Microscopy, Energy-dispersive X-ray, infrared spectra and Ultraviolet–Visible Diffuse Reflectance Spectroscopy. The characterizations showed that ZnO/CuO composite possesses a bandgap of around 3.37 eV, and consists of ZnO and CuO. The photocatalytic activity of the CuO, ZnO and ZnO/CuO was assessed by degradation of methylene blue under visible light. Among them, ZnO/CuO displayed the best photocatalytic activity. The enhancement in photocatalytic activity for the ZnO/CuO was observed, which can be attributed to the presence of CuO in the materials.
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