文献类型：期刊文献

英文题名：Facile synthesis of sulfate-doped Ag3PO4 with enhanced visible light photocatalystic activity

作者：Cao, Wenrong[1];Gui, Zhenyou[1];Chen, Lifang[1];Zhu, Xuedong[1];Qi, Zhiwen[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2017

卷号：200

起止页码：681

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：;EI(收录号：20163202693371);WOS:【SCI-EXPANDED(收录号:WOS:000384775600071)】；

基金：The authors gratefully acknowledge the support of the National Natural Science Foundation of China (NSFC 21476084), the Fundamental Research Funds for the Central Universities, PetroChina Innovation Foundation, the Open Project of Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials (2014MCIMKF02) and 111 Project (B08021).

语种：英文

外文关键词：Sulfate doping; Precipitation; Ag3PO4; Visible light; Photocatalysis

摘要：Sulfate-doped Ag3PO4 photocatalysts were successfully synthesized via a simple precipitation method. The X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) confirmed that SO42- ions were incorporated into the lattice of Ag3PO4 by replacing PO43-. The crystalline structure and optical absorption behavior of Ag3PO4 remain unchanged after SO42- doping. However, SO42--doped Ag3PO4 catalyst with 0.50 at% SO42- concentration ratio exhibited remarkably enhanced photocatalytic activity, and completely decomposed rhodamine B (RhB) and methylene blue (MB) in 4 and 5 min under visible light irradiation, respectively. Its degradation rate constant was more than 5 times higher than that of pristine Ag3PO4. The high photocatalytic performance is attributed to the fact that doping SO42- into Ag3PO4 lattice can improve the separation efficiency of photogenerated electron-hole pairs and hinder their recombination. In addition, the results of density functional theory (DFT) calculations indicate that SO42- substitution can effectively tune the electronic structures of Ag3PO4, thus resulting in high photocatalytic activity under visible light irradiation. (C) 2016 Elsevier B.V. All rights reserved.