文献类型：期刊文献

英文题名：Preparation and characterization of visible light-driven AgCl/PPy photocatalyst

作者：Gu, Shuna[1];Li, Bing[1];Zhao, Chongjun[1];Xu, Yunlong[1];Qian, Xiuzhen[1];Chen, Guorong[1]

机构：[1]E China Univ Sci & Technol, Key Lab Ultrafine Mat, Shanghai Key Lab Adv Polymer Mat, Minist Educ,Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2011

卷号：509

期号：18

起止页码：5677

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20111413894090);WOS:【SCI-EXPANDED(收录号:WOS:000289374300043)】；

基金：The authors thank Prof. Kake Zhu for in depth discussions. We are grateful for the support from the National Natural Science Foundation of China (no. 20504026, 20604015), International Scientific and Technological Cooperation Program of Shanghai (no. 08230705600), and Shanghai Nanotechnology Promotion Center (no. 0852nm02300), Shanghai Leading Academic Discipline Project (B502) and Shanghai Key Laboratory Project (08DZ2230500).

语种：英文

外文关键词：AgCl/PPy composites; AgCl; Visible light-driven photocatalysis; Photoreduction

摘要：Visible light photoactive AgCl/polypyrrole (PPy) composites were prepared via the reaction between excessive Ag+ and Cl- ions in the presence of PPy. The AgCl/PPy composites were systematically characterized using Fourier transform infrared (FTIR) spectroscopy, Raman spectra, X-ray diffraction (XRD), Scanning electron microscope (SEM), Transmission electron microscope (TEM) and Thermal gravity analysis (TGA). It was found that face-centered cubic AgCl nanocrystallite and 0.2 wt% PPy component existed in the composite and spherical AgCl/PPy nanoparticles were in the range of 200-600 nm. The AgCl/PPy composites showed higher visible light-driven photocatalytic activity and stability than that of AgCl. A photoreduction mechanism was postulated for AgCl/PPy photocatalyst on dye methyl orange (MO). The used AgCl/PPy photocatalyst was facilely regenerated by an oxidation process in aqueous FeCl3 solution. (C) 2011 Elsevier B.V. All rights reserved.