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Nature of Conduction Band Tailing in Hydrogenated Titanium Dioxide for Photocatalytic Hydrogen Evolution
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; Sun, S (reprint author), Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Collaborat Innovat Ctr Chem Energy Mat, Hefei 230029, Anhui, Peoples R China.; Sun, S (reprint author), Univ Sci & Technol China, CAS Key Lab Mat Energy Convers, Dept Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China.
2016
Source PublicationCHEMCATCHEM
ISSN1867-3880
Volume8Issue:12Pages:2010-2014
Subtype期刊论文
AbstractThe 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.
KeywordConduction Band Tailing Hydrogenation Oxygen Vacancies Photocatalysis Semiconductors
DOI10.1002/cctc.201600237
Indexed BySCI
Language英语
WOS IDWOS:000379533600002
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/26582
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorBao, 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.; Sun, S (reprint author), Univ Sci & Technol China, CAS Key Lab Mat Energy Convers, Dept Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China.
Recommended Citation
GB/T 7714
Xue, JW,Zhu, XD,Zhang, Y,et al. Nature of Conduction Band Tailing in Hydrogenated Titanium Dioxide for Photocatalytic Hydrogen Evolution[J]. CHEMCATCHEM,2016,8(12):2010-2014.
APA Xue, JW.,Zhu, XD.,Zhang, Y.,Wang, WD.,Xie, W.,...&Sun, S .(2016).Nature of Conduction Band Tailing in Hydrogenated Titanium Dioxide for Photocatalytic Hydrogen Evolution.CHEMCATCHEM,8(12),2010-2014.
MLA Xue, JW,et al."Nature of Conduction Band Tailing in Hydrogenated Titanium Dioxide for Photocatalytic Hydrogen Evolution".CHEMCATCHEM 8.12(2016):2010-2014.
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