Black TiO2 nanotube arrays for high-efficiency photoelectrochemical water-splitting

Houlei Cui; Wei Zhao; Chongyin Yang; Hao Yin; Tianquan Lin; Yufeng Shan; Yian Xie; Hui Gu; Fuqiang Huang

doi:10.1039/C4TA00176A

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Black TiO₂ nanotube arrays for high-efficiency photoelectrochemical water-splitting†

Houlei Cui,^a Wei Zhao,^a Chongyin Yang,^a Hao Yin,^a Tianquan Lin,^a Yufeng Shan,^a Yian Xie,^a Hui Gu^a and Fuqiang Huang*^ab

Author affiliations

* Corresponding authors

^a State Key Laboratory of High Performance Ceramics and Superfine Microstructure, CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P.R. China
E-mail: huangfq@mail.sic.ac.cn

^b Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P.R. China

Abstract

Black titania nanotube arrays are prepared for the first time by the melted aluminium reduction of pristine anodized and air-annealed titania nanotube arrays. The black titania nanotubes with substantial Ti³⁺ and oxygen vacancies exhibit an excellent photoelectrochemical water-splitting performance due to the improved charge transport and separation and the extended visible light response. An impressive applied bias photon-to-current efficiency of 1.20% is achieved.

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Article information

DOI: https://doi.org/10.1039/C4TA00176A
Article type: Communication
Submitted: 12 Jan 2014
Accepted: 11 Mar 2014
First published: 13 Mar 2014

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J. Mater. Chem. A, 2014,2, 8612-8616

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Black TiO₂ nanotube arrays for high-efficiency photoelectrochemical water-splitting

H. Cui, W. Zhao, C. Yang, H. Yin, T. Lin, Y. Shan, Y. Xie, H. Gu and F. Huang, J. Mater. Chem. A, 2014, 2, 8612 DOI: 10.1039/C4TA00176A

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Journal of Materials Chemistry A