Abstract
In this work, Bi2WO6/ZnWO4 heterojunctions were in-situ constructed through a hydrothermal method. Surface photovoltage spectrometer (SPS) results illustrate that Bi2WO6/ZnWO4 heterojunctions exhibit higher separation rate of photogenerated carriers than ZnWO4, thereby resulting in the significantly enhanced photocatalytic performance. Photocatalytic activities of the samples were evaluated by degradation of rhodamine B (RhB), the results reveal that Bi2WO6/ ZnWO4 heterojunctions hold higher photocatalytic activities than that of ZnWO4. The trapping experiments display that •O2– radicals play an important role in photocatalytic degradation of RhB.
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