title: Nonstoichiometric rutile TiO2 photoelectrodes for improved photoelectrochemical water splitting.
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.
authors.affiliation: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China.
authors.forename: Chao
authors.initials: C
authors.lastname: Zhen
authors.forename: Lianzhou
authors.initials: L
authors.lastname: Wang
authors.forename: Li
authors.initials: L
authors.lastname: Liu
authors.forename: Gang
authors.initials: G
authors.lastname: Liu
authors.forename: Gao Qing
authors.initials: GQ
authors.lastname: Lu
authors.forename: Hui-Ming
authors.initials: HM
authors.lastname: Cheng