title: Core-shell nanostructured "black" rutile titania as excellent catalyst for hydrogen production enhanced by sulfur doping.
abstract: Modification of rutile titanium dioxide (TiO2) for hydrogen generation and water cleaning is a grand challenge due to the chemical inertness of rutile, while such inertness is a desired merit for its stability in photoelectrochemical applications. Herein, we report an innovative two-step method to prepare a core-shell nanostructured S-doped rutile TiO2 (R'-TiO2-S). This modified black rutile TiO2 sample exhibits remarkably enhanced absorption in visible and near-infrared regions and efficient charge separation and transport. As a result, the unique sulfide surface (TiO(2-x):S) boosts the photocatalytic water cleaning and water splitting with a steady solar hydrogen production rate of 0.258 mmol h(-1) g(-1). The black titania is also an excellent photoelectrochemical electrode exhibiting a high solar-to-hydrogen conversion efficiency of 1.67%. The sulfided surface shell is proved to be an effective strategy for enhancing solar light absorption and photoelectric conversion.
authors.affiliation: CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050, P. R. China.
authors.forename: Chongyin
authors.initials: C
authors.lastname: Yang
authors.forename: Zhou
authors.initials: Z
authors.lastname: Wang
authors.forename: Tianquan
authors.initials: T
authors.lastname: Lin
authors.forename: Hao
authors.initials: H
authors.lastname: Yin
authors.forename: Xujie
authors.initials: X
authors.lastname: Lü
authors.forename: Dongyun
authors.initials: D
authors.lastname: Wan
authors.forename: Tao
authors.initials: T
authors.lastname: Xu
authors.forename: Chong
authors.initials: C
authors.lastname: Zheng
authors.forename: Jianhua
authors.initials: J
authors.lastname: Lin
authors.forename: Fuqiang
authors.initials: F
authors.lastname: Huang
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Xie
authors.forename: Mianheng
authors.initials: M
authors.lastname: Jiang