Preparation of ordered mesoporous Ag/WO3 and its highly efficient degradation of acetaldehyde under visible-light irradiation
Preparation of ordered mesoporous Ag/WO3 and its highly efficient degradation of acetaldehyde under visible-light irradiation
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DOI：
10.1016/j.jhazmat.2010.01.098
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发表时间：
2010-06-15
影响因子：
13.6
通讯作者：
Zhang, Ling
中科院分区：
文献类型：
--
作者：
Sun, Songmei;Wang, Wenzhong;Zhang, Ling
通过超声辅助插入法成功合成了一种高活性光催化剂——载银介孔WO3。采用常见空气污染物乙醛的光降解来评估所制备的样品在可见光照射下的光催化性能。光催化活性分别比纯介孔WO3和氮掺杂TiO2高约3倍和6倍。研究了光催化机理，以了解光催化活性的显着增强，这主要归因于 Ag-WO3 异质结中电子-空穴分离的显着改善。 (C) 2010 Elsevier B.V. 保留所有权利。
A highly active photocatalyst, silver loaded mesoporous WO3, was successfully synthesized by an ultrasound assisted insertion method. The photodegradation of a common air pollutant acetaldehyde was adopted to evaluate the photocatalytic performance of the as-prepared sample under visible-light irradiation. The photocatalytic activity was about three and six times higher than that of pure mesoporous WO3 and nitrogen-doped TiO2, respectively. The photocatalytic mechanism was investigated to understand the much enhanced photocatalytic activity, which was mainly attributed to the largely improved electron-hole separation in the Ag-WO3 heterojunction. (C) 2010 Elsevier B.V. All rights reserved.