Nonstoichiometric rutile TiO2 photoelectrodes for improved photoelectrochemical water splitting

Chao Zhen; Lianzhou Wang; Li Liu; Gang Liu; Gao Qing Lu; Hui-Ming Cheng

doi:10.1039/C3CC42458H

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Nonstoichiometric rutile TiO₂ photoelectrodes for improved photoelectrochemical water splitting†

Chao Zhen,^a Lianzhou Wang,^b Li Liu,^c Gang Liu,*^a Gao Qing Lu^b and Hui-Ming Cheng^a

Author affiliations

* Corresponding authors

^a Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
E-mail: gangliu@imr.ac.cn
Fax: +86 24 23971682
Tel: +86-24-23971088

^b ARC Centre of Excellence for Functional Nanomaterials, The University of Queensland, Qld. 4072, Australia

^c State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

Abstract

A new type of nonstoichiometric rutile titanium dioxide (TiO₂) film with around 15 at% oxygen vacancies homogeneously distributed throughout the bulk was prepared. The resultant films, when used as a photoelectrode, showed a photoelectrochemical water splitting activity 1.7 times that of stoichiometric TiO₂ at a bias of 0.9 V vs. Ag/AgCl. This is believed to result from the synergistic effect of the improved bulk transport and surface transfer of charge carriers compared to the stoichiometric rutile TiO₂.

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Article information

DOI: https://doi.org/10.1039/C3CC42458H
Article type: Communication
Submitted: 05 Apr 2013
Accepted: 16 May 2013
First published: 03 Jun 2013

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Chem. Commun., 2013,49, 6191-6193

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Nonstoichiometric rutile TiO₂ photoelectrodes for improved photoelectrochemical water splitting

C. Zhen, L. Wang, L. Liu, G. Liu, G. Q. Lu and H. Cheng, Chem. Commun., 2013, 49, 6191 DOI: 10.1039/C3CC42458H

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