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

被引：56

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

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2015年 / 401卷

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

AS/Ag2SO4/ZnO nanostructures; Visible-light; Degradation; Photocatalysis; SENSITIZED SOLAR-CELLS; HIGHLY EFFICIENT; MICROCYSTIN-LR; GEL SYNTHESIS; AG-ZNO; NANOCRYSTALS; DYE; DEGRADATION; PERFORMANCE; SURFACE;

D O I：

10.1016/j.molcata.2015.02.023

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

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.

引用

页码：81 / 89

页数：9

共 54 条

[1]

Biogenic Synthesis, Photocatalytic, and Photoelectrochemical Performance of Ag-ZnO Nanocomposite [J].