文献类型：期刊文献

英文题名：Microwave-assisted synthesis of Ag/Ag2SO4/ZnO nanostructures for efficient visible-light-driven photocatalysis

作者：Cao, Wenrong[1];Chen, Lifang[1];Qi, Zhiwen[1]

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

年份：2015

卷号：401

起止页码：81

外文期刊名：JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL

收录：;EI(收录号：20151100638924);WOS:【SCI-EXPANDED(收录号:WOS:000352662400011)】；

基金：The authors gratefully acknowledge the support of the National Natural Science Foundation of China (NSFC 21476084), the National High Technology Research and Development Program of China (8632012AA0161601), the Fundamental Research Funds for the Central Universities, Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP 20120074110008), the Open Project of State Key Laboratory of Chemical Engineering (SKL-Che-12C05), 111 Project (B08021).

语种：英文

外文关键词：AS/Ag2SO4/ZnO nanostructures; Visible-light; Degradation; Photocatalysis

摘要：Novel Ag/Ag2SO4/ZnO nanostructures were successfully fabricated by a facile microwave-assisted template-free hydrothermal method. The results reveal that Ag/Ag2SO4 nanoparticles are uniformly dispersed on the surfaces of ZnO plates, which forms the hierarchical Ag/Ag2SO4/ZnO (AZ) nanostructures. The AZ-2 photocatalyst obtained by adjusting the amounts of thiourea and AgNO3 with the molar ratio of 1:1 exhibits the highest photocatalytic efficiency, and rhodamine B can be decolorized within 35 min and 20 min under visible-light (lambda >420 nm) and natural sunlight irradiation, respectively. The enhanced photocatalytic performance of AZ catalysts may result from the synergistic effects of Ag/Ag2SO4 nanoparticles loaded on ZnO surfaces, which can enhance visible-light absorption capability of ZnO and promote photoinduced electron-hole separation. Therefore, the Ag/Ag2SO4 nanoparticles doped on semiconductors can be used as effective visible-light photocatalysts and show a great potential for practical applications in the treatment of dye-containing wastewater. (C) 2015 Elsevier B.V. All rights reserved.