期刊
RSC ADVANCES
卷 5, 期 85, 页码 69312-69318出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra12779c
关键词
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资金
- National Natural Science Foundation of China [21171136, 21371139, 51378183]
- High-tech Industry Technology Innovation Team Training Program of Wuhan Science and Technology Bureau [2014070504020243]
Uniform Ag/Bi2O3 nanocomposites with different amounts of Ag were prepared via the deposition precipitation method. Compared with Bi2O3 nanosphere supporters, Ag/Bi2O3 nanocomposites exhibit highly enhanced visible-light-driven Cr(VI) photoreduction activity and photocatalytic bacteria inactivation. Accordingly, the effects that influence the photocatalytic activity of Ag/Bi2O3 nanocomposites were investigated through analyzing its optical properties, photoluminescence, and production of reactive oxygen species (ROS). It was found that the decorated Ag nanoparticles could improve the visible-light adsorption, electron-hole separation efficiency, surface oxygen vacancies and the production of reactive oxygen species of Ag/Bi2O3 nanocomposites, resulting in enhanced photocatalytic performance. This study not only demonstrates that Ag/Bi2O3 could be a promising visible-light-response photocatalyst for water treatment, but it also provides an ideal strategy for improving photocatalytic performance under visible light irradiation.
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