Abstract
ABSTRACTZnO/Ag composites were successfully synthesized. In this paper, the flower-shaped precursor was first prepared by a typical hydrothermal reaction at 150°C. The structure, morphology and component of the as-synthesized materials were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The photocatalytic activity of these materials was evaluated by measuring the degradation ratio of methylene blue (MB) and methyl orange (MO) solutions under visible light irradiation. The result showed that flower-like Ag/ZnO composites exhibited enhanced catalytic performance. PL spectra indicated the surface modification of ZnO microflowers by the load of Ag nanoseeds enhanced the interfacial charge transfer kinetics between the Ag and ZnO, which improved the separation efficiency of the photogenerated electron-hole pairs.
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