Au Nanoparticle Modified WO3 Nanorods with Their Enhanced Properties for Photocatalysis and Gas Sensing

被引：300

作者：

Xiang, Q. ^{[1
,2
]}

Meng, G. F. ^{[1
]}

Zhao, H. B. ^{[1
]}

Zhang, Y. ^{[1
]}

Li, H. ^{[1
]}

Ma, W. J. ^{[1
]}

Xu, J. Q. ^{[1
,2
]}

机构：

[1] Shanghai Univ, Coll Sci, Dept Chem, Shanghai 200444, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Transducer Technol, Shanghai 200050, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 05期

关键词：

THIN-FILMS; CHARGE SEPARATION; TIO2; CATALYST; PHOTODEGRADATION; PHOTOCHROMISM; DECOMPOSITION; DEGRADATION; PERFORMANCE; FABRICATION;

D O I：

10.1021/jp909742d

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：

A novel photocatalysis and gas sensing material was synthesized by decorating Au nanoparticles on tungsten trioxide nanorods. Tungsten trioxide nanorods were prepared through the ion-exchange method combined with hydrothermal treatment and further modified with Au nanoparticles (Au NPs). After Au NPs decorated on the surface of WO3 nanorods (WO3 NRs), the reducing gas (hydrogen, methanol, ethanol, etc.) sensing properties and the photocatalytic performance of rhodamine B (RhB) were all greatly improved. Au NP modified WO3 nanorods (Au NP@WO3 NRs) exhibit not only larger response (H-2 50 ppm, recovery time lower than 10 s) and better selectivity (Ra/Rg = 6.6) for H-2 gas detection than pure WO3 NRs but also high photocatalytic properties for the absolute degradation of RhB under simulated Sunlight irradiation for 120 min.

引用

页码：2049 / 2055

页数：7

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