3 years ago

The Enhanced Photocatalytic Properties for Water Oxidation over Bi/BiVO4/V2O5 Composite

The Enhanced Photocatalytic Properties for Water Oxidation over Bi/BiVO4/V2O5 Composite
Hongzhi Mao, Xiaojian Ma, Xiaotong Li, Xia Guo, Xiaofeng Xu, Shufang Kou
Bi/BiVO4/V2O5 has been successfully synthesized by a simple annealing of BiVO4 in Ar/H2. The obtained Bi/BiVO4/V2O5 was characterized by X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). The photocatalytic activities are examined by an oxygen-evolution reaction. When BiO/BiVO4/V2O5 in air and Bi2VO5.5/ BiVO4/V2O5 in vacuum were compared with the products annealing in other atmospheres, Bi/BiVO4/V2O5 exhibited the best performance (2413 μmol·g–1·h–1), which could be attributed to the synergistic combination of Bi, BiVO4, and V2O5. This study may open up a new avenue for the development of an efficient composite photocatalyst.

Publisher URL: http://dx.doi.org/10.1021/acs.jpcc.7b03119

DOI: 10.1021/acs.jpcc.7b03119

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