文献类型：期刊文献

英文题名：An efficient photocatalyst for degradation of various organic dyes: Ag@Ag2MoO4-AgBr composite

作者：Bai, Yu-Yang[1];Lu, Yi[1];Liu, Jin-Ku[1]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China

年份：2016

卷号：307

起止页码：26

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20160301826324);WOS:【SCI-EXPANDED(收录号:WOS:000374803500004)】；

基金：This work was supported by National Natural Science Foundation China (Grant 21341007), Fundamental Research Funds or the Central Universities (Grant 222201313005) and State Key Laboratory of Pollution Control and Resource Reuse Foundation (Grant 13019).

语种：英文

外文关键词：Environmental hazards; organic pollutants; Degradation; Photocatalyst

摘要：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.