Structure and Photocatalytic Performance of Zr4+ Doped Bi2WO6 Synthesized by Fast Microwave-assisted Hydrothermal Method

摘要

Zr4+ doped Bi2WO6 was prepared by a fast microwave-assisted hydrothermal method and used for photocatalytic degradation of organic dyes.The as-prepared samples were characterized by X-ray diffraction (XRD),transmission electron microscopy (TEM) and UV-Vis spectroscopy.The results indicate that cell volume of Bi2WO6 has a slight increase dependent on the substitution of W6+ by Zr4+ with increasing the Zr doping amount.The photocatalytic performance of Zr4+ doped Bi2WO6 was evaluated by the photodegradation of MO under visible light irradiation.Compared with samples obtained with traditional hydrothermal method as well as pure Bi2WO6,an obviously improved photocatalytic efficiency of Zr4+ doped Bi2WO6 is achieved by this microwave-assisted hydrothermal way.The 3％ Zr doped Bi2WO6 sample exhibited the best photocatalytic activity,which is probably because of the appropriate proportion of components and optimum amount of oxygen vacancies of the sample.