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题名:
Nature of Conduction Band Tailing in Hydrogenated Titanium Dioxide for Photocatalytic Hydrogen Evolution
作者: Xue, JW; Zhu, XD; Zhang, Y; Wang, WD; Xie, W; Zhou, JL; Bao, J; Luo, Y; Gao, X; Wang, Y; Jang, LY; Sun, S; Gao, C
刊名: CHEMCATCHEM
出版日期: 2016
卷号: 8, 期号:12, 页码:2010-2014
关键词: conduction band tailing ; hydrogenation ; oxygen vacancies ; photocatalysis ; semiconductors
DOI: 10.1002/cctc.201600237
通讯作者: Bao, J ; Sun, S (reprint author), Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Collaborat Innovat Ctr Chem Energy Mat, Hefei 230029, Anhui, Peoples R China. ; Bao, J ; Sun, S (reprint author), Univ Sci & Technol China, CAS Key Lab Mat Energy Convers, Dept Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China.
文章类型: 期刊论文
英文摘要: The involvement of oxygen vacancies in the electronic and structural properties and photocatalytic activity of hydrogenated TiO2 (H-TiO2) for water splitting are currently under debate. Herein, the process for the formation of oxygen vacancies in H-TiO2 is illustrated for the first time to verify the role of these vacancies on the surface and in the bulk of H-TiO2 by using surface-sensitive soft X-ray techniques and bulk-information-included hard X-ray techniques for the O K-edges and Ti K-edges, respectively. We find that oxygen vacancies on the surface and in the bulk contribute differently to tailing of the conduction band of H-TiO2. By controlling the degree of hydrogenation to restrict tailing of the conduction band to just above the H+/H-2 redox potential, the most favorable disordered structure for photocatalytic H-2 evolution is developed. This work promotes a better understanding of the possible negative consequence of hydrogenated semiconductors in H-2 evolution apart from the positive effect on visible-light response.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000379533600002
ISSN号: 1867-3880
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26582
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Xue, JW,Zhu, XD,Zhang, Y,et al. Nature of Conduction Band Tailing in Hydrogenated Titanium Dioxide for Photocatalytic Hydrogen Evolution[J]. CHEMCATCHEM,2016-01-01,8(12):2010-2014.
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文件名: Nature of Conduction Band Tailing in Hydrogenated Titanium Dioxide for Photocatalytic Hydrogen Evolution.pdf
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