光催化
可见光谱
甲基橙
罗丹明B
亚甲蓝
催化作用
光化学
材料科学
复合数
激进的
复合材料
化学
有机化学
光电子学
作者
Zhongyi Jiao,Junlei Zhang,Zhendong Liu,Zhen Ma
标识
DOI:10.1016/j.jphotochem.2018.11.003
摘要
Ag2MoO4 shows low photocatalytic activity under visible light. It would be interesting to develop Ag2MoO4-based composite/heterojunction photocatalysts working efficiently under visible light. Herein, novel Ag/AgCl/Ag2MoO4 composites were obtained via photoreduction of AgCl/Ag2MoO4 composites prepared by sequential precipitation. The composition, morphologies, and optical properties of the samples were studied via various characterization techniques. Photocatalytic degradation of rhodamine B (RhB), methylene blue (MB), methyl orange (MO), norfloxacin (NOF), and tetracycline hydrochloride (TC) solutions was conducted under visible-light irradiation. An optimal Ag/AgCl/Ag2MoO4 catalyst showed much higher photocatalytic activity than Ag2MoO4, and it also showed reasonably fine recyclability. Through radical-capturing experiments, photogenerated holes (h+) were determined to be the main active species whereas hydroxyl radicals (OH) were found to play a secondary role in photocatalysis. Possible photocatalytic mechanisms were proposed.
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