Synthesis of V5+‐doped Ag/AgCl photocatalysts with enhanced visible light photocatalytic activity |
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| Authors: | Caiping Guo Limin Song Yamiao Li Shujuan Zhang |
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| Institution: | 1. College of Environment and Chemical Engineering and State Key Laboratory of Hollow‐Fiber Membrane Materials and Membrane Processes, Tianjin Polytechnic University, Tianjin, People's Republic of China;2. College of Science, Tianjin University of Science and Technology, Tianjin, People's Republic of China |
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| Abstract: | V5+‐doped Ag/AgCl photocatalysts were prepared via the ion exchange method. The catalysts were characterized using X‐ray diffractometry, transmission electron microscopy, and energy‐dispersive X‐ray, X‐ray photoelectron, Fourier transform infrared and ultraviolet–visible spectroscopies. The V5+‐doped Ag/AgCl photocatalysts show much higher photocatalytic activities than Ag/AgCl under visible light irradiation for methyl orange (MO) decomposition. Especially, the 2.0 wt% V5+‐doped Ag/AgCl photocatalyst shows the highest photocatalytic activity and also high stability after five cycles. The MO degradation rate during each cycle is almost maintained at 97%. Electron spin resonance spectroscopy and radical trapping experiments reveal that holes play an important role in the photocatalytic process. |
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| Keywords: | enhanced mechanism photocatalyst V5+‐doped Ag/AgCl |
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