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Synthesis of V 5+ ‐doped Ag/AgCl photocatalysts with enhanced visible light photocatalytic activity
Author(s) -
Guo Caiping,
Song Limin,
Li Yamiao,
Zhang Shujuan
Publication year - 2018
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.4237
Subject(s) - photocatalysis , chemistry , x ray photoelectron spectroscopy , photochemistry , visible spectrum , methyl orange , electron paramagnetic resonance , doping , transmission electron microscopy , catalysis , fourier transform infrared spectroscopy , nuclear chemistry , materials science , nanotechnology , chemical engineering , nuclear magnetic resonance , optoelectronics , organic chemistry , physics , engineering
V 5 + ‐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 V 5+ ‐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% V 5+ ‐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.