Enhanced photocatalytic activity of Bi2WO6 loaded with Ag nanoparticles under visible light irradiation

被引：224

作者：

Ren, Jia ^{[1
]}

Wang, Wenzhong ^{[1
]}

Sun, Songmei ^{[1
]}

Zhang, Ling ^{[1
]}

Chang, Jiang ^{[2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Ceram, Biomat & Tissue Engn Res Ctr, Shanghai 200050, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2009年 / 92卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Silver; Bi2WO6; Photocatalytic activity; Bacterium; Inactivation; MODIFIED TITANIUM-DIOXIDE; EFFICIENT DESTRUCTION; METAL NANOPARTICLES; PATHOGENIC BACTERIA; ORGANIC-COMPOUNDS; AQUEOUS-SOLUTIONS; TIO2; PARTICLES; DEGRADATION; REDUCTION; OXIDATION;

D O I：

10.1016/j.apcatb.2009.07.022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ag-loaded Bi2WO6 nanoparticles were prepared via a facile alcohol-thermal process in ethylene alcohol system. The products were characterized by XRD, TEM, HRTEM and energy-dispersed X-ray (EDX) microanalysis. The results revealed that it was the metallic Ag deposited on Bi2WO6, which was further confirmed by the surface plasmon absorption band existed in the UV-vis absorption spectrum. Compared with pure Bi2WO6, Ag-loaded Bi2WO6 photocatalysts exhibited significantly enhanced photocatalytic activity in inactivating E. call, a Gram-negative bacterium, and S. epidermidis, a Gram-positive bacterium under visible light irradiation (lambda > 420 nm). The influence of the content of silver on the catalytic activity of Bi2WO6 photocatalyst has been investigated. The results concerning the effect of silver on the catalytic activity of Bi2WO6 photocatalyst revealed that the significant enhancement of photocatalytic activity can be attributed to the synergetic effects between noble metal and semiconductor component. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：50 / 55

页数：6

共 36 条

[1] Characterization and photocatalytic activity of Au/TiO2 thin films for azo-dye degradation [J].