期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 307, 期 -, 页码 26-35出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2015.12.052
关键词
Environmental hazards; organic pollutants; Degradation; Photocatalyst
资金
- National Natural Science Foundation China [21341007]
- Fundamental Research Funds or the Central Universities [222201313005]
- State Key Laboratory of Pollution Control and Resource Reuse Foundation [13019]
The Ag2MoO4-AgBr composite was prepared by a facile in-situ anion-exchange method, then the Ag nanoparticles were coated on this composite through photodeposition route to form a novel Ag@Ag2MoO4-AgBr composite. The in-situ Br- replacement in a crystal lattice node position of Ag2MoO4 crystal allows for overcoming the resistance of electron transition effectively. Meanwhile silver nano particles on the surface of Ag@Ag2MoO4-AgBr composite could act as electron traps to intensify the photogeneration electron-hole separation and the subsequent transfer of the trapped electron to the adsorbed O-2 as an electron acceptor. As an efficient visible light catalyst, the Ag@Ag2MoO4-AgBr composite exhibited superior photocatalytic activity for the degradation of various organic dyes. The experimental results demonstrated superior photocatalytic rate of Ag@Ag2MoO4-AgBr composite compared to pure AgBr and Ag2MoO4 crystals (37.6% and 348.4% enhancement respectively). The Ag@Ag2MoO4-AgBr composite cloud degraded Rhodamin B, bromophenol blue, and amino black 10b completed in 7 min. (C) 2015 Elsevier B.V. All rights reserved.
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