期刊
CHEMPLUSCHEM
卷 78, 期 1, 页码 117-123出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cplu.201200198
关键词
Bi2MoO6 hollow spheres; charge transfer; composites; host-guest systems; photocatalysis; silver
资金
- National Natural Science Foundation of China [21031001, 20971040, 51272070, 51102082, 21001042, 21101060, 21101061]
- Ministry of Education of China [708029]
- Research Fund for the Doctoral Program of Higher Education of China [20112301110002]
- China Postdoctoral Science Special Foundation [2012T50270]
- China Postdoctoral Science Foundation [20110490154]
- Special Fund of Technological Innovation Talents in Harbin City [2012RFQXG111]
- Heilongjiang University [Hdtd2010-02]
- Heilongjiang Provincial Education Department [12511376]
The fabrication of multicomponent composite systems may provide benefits in terms of charge separation and the retardation of charge pair recombination. For this purpose, a hierarchical Ag/AgBr/Bi2MoO6 composite was fabricated by using prepared hierarchical floriated Bi2MoO6 hollow spheres as a supporting material. The interleaved nanoflakes assembled in the hierarchical floriated Bi2MoO6 hollow spheres contributed to the stable deposition of Ag/AgBr nanoparticles and the formation of effective nanojunctions, which led to the low recombination rates of the photoinduced electronhole pairs. The presence of double visible-light-active components in the Ag/AgBr/Bi2MoO6 nanojunction system further broadened the visible-light photoresponse range. As a result, the hierarchical Ag/AgBr/Bi2MoO6 composite exhibited a higher photocatalytic activity than both photocatalysts containing single visible-light-active components and crushed Ag/AgBr/Bi2MoO6 nanoparticles for the degradation of alizarin red S (ARS) and phenol. X-ray photoelectron spectroscopy (XPS) analyses indicated that both AgBr and Ag0 components coexist in the system, and the as-prepared composite is relatively stable. The improved photoinduced charge-transfer properties of the hierarchical Ag/AgBr/Bi2MoO6 composite were investigated by using the transient photovoltage (TPV) technique.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据