期刊
JOURNAL OF SOLID STATE CHEMISTRY
卷 206, 期 -, 页码 308-316出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2013.07.019
关键词
Microwave-assisted synthesis; Flower-like microspheres; Photocatalytic; Degradation; p-Nitrophenol
资金
- National Natural Science Foundation of China [51238002, 51272099, 51008149]
- Jiangxi Province Education Department [GJJ11508]
- Superior science and technology innovation team of Jiangxi Province [20122BCB24024]
Flower-like Ag/AgBr/BiOBr microspheres were successfully fabricated by the approach of microwave-assisted solvothermal and in situ photo-assisted reduction. A reactive ionic liquid 1-hexadecyl-3-methylimidazolium bromide ([C(16)mim]Br) was employed as Br source in the presence of surfactant polyvinylpyrrolidone (PVP). The photocatalytic activity of Ag/AgBr/BiOBr towards the decomposition of p-nitrophenol under visible light irradiation was evaluated. The results indicated that Ag/AgBr/BiOBr showed enhanced photocatalytic activity towards p-nitro phenol, comparing with P25, BiOBr and Ag/AgBr. More than 96% of p-nitrophenol was decomposed in 3.5 h under visible-light irradation. The excellent photocatalytic activity of flower-like Ag/AgBr/BiOBr microspheres can be attributed to the large specific surface area, strong visible-light absorption, suitable energy band structure and surface plasmon resonance effect of Ag nanoparticles. The possible photocatalytic mechanism was proposed based on the active species test and band gap structure analysis. (C) 2013 Published by Elsevier Inc.
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