期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 688, 期 -, 页码 399-406出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.07.076
关键词
Surface oxygen vacancy; BiFeO3 nanoparticles; Hydrogenation; Photocatalytic performance; Photocatalytic mechanism
资金
- National Natural Science Foundation of China [51372237, 51572250]
- Public Welfare Project of Science & Technology Department of Zhejiang Province [2014C31026]
- Research Project of Public Welfare Quality Testing Industry of China [201510072]
- Zhejiang Provincial Higher School Talent Project [PD2013183]
In recent years, the favorable effect of surface oxygen vacancies on photocatalytic activity has been observed in various metal oxides. In this work, surface oxygen vacancies, for the first time, were introduced into the synthesized BiFeO3 (BFO) nanoparticles by a high pressure hydrogenation process. The formation of surface oxygen vacancies was verified by a variety of characterization techniques. Compared to the pristine BFO, the hydrogenated BFO with surface oxygen vacancies exhibited much higher photocatalytic activities for methyl orange under visible light irradiation. The enhanced photocatalytic activities of the hydrogenated BFO photocatalyst could be attributed to the increased optical absorption, the efficient charge transfer and separation as well as the suppressed recombination of photogenerated electron-hole pairs derived from the induced surface oxygen vacancies in the hydrogenated BFO. (C) 2016 Elsevier B.V. All rights reserved.
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