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Abstract
BiVO4 and Dy-doped BiVO4 photocatalysts with different molar ratio of Dy/Bi (1%, 2%, 3%, and 4%) were prepared by a sol–gel method and characterized by Brunauer–Emmett–Teller (BET) method, X-ray diffraction (XRD), UV/Vis diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopic (XPS) techniques, and surface photovoltage spectroscopy (SPS), respectively. The photocatalytic performance for decolorization of rhodamine B (RhB) aqueous solution under solar light was evaluated, the results show that Dy-doped BiVO4 with about 2%Dy possesses the best photocatalytic activity and the underlying mechanism is suggested.
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Funding
This project was supported financially by the program of Science and Technology Department of Sichuan province (no. 2013JY0080), Research Fund Projects of Sichuan University of Science and Engineering (no. 2011KY09), Program of Education Department of Sichuan province (no. 10ZA140, no. 11ZA27, no. 11ZB243), Construct Program of the Discipline in Sichuan University of Science and Engineering, and the Opening Project of Key Laboratory of Green Catalysis of Sichuan Institutes of High Education (no. LYJ1101).