title: Tuning the relative concentration ratio of bulk defects to surface defects in TiO2 nanocrystals leads to high photocatalytic efficiency.
abstract: TiO(2) nanocrystals with tunable bulk/surface defects were synthesized and characterized with TEM, XRD, BET, positron annihilation, and photocurrent measurements. The effect of defects on photocatalytic activity was studied. It was found for the first time that decreasing the relative concentration ratio of bulk defects to surface defects in TiO(2) nanocrystals could significantly improve the separation efficiency of photogenerated electrons and holes, thus significantly enhancing the photocatalytic efficiency.
authors.affiliation: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, P.R. China.
authors.forename: Ming
authors.initials: M
authors.lastname: Kong
authors.forename: Yuanzhi
authors.initials: Y
authors.lastname: Li
authors.forename: Xiong
authors.initials: X
authors.lastname: Chen
authors.forename: Tingting
authors.initials: T
authors.lastname: Tian
authors.forename: Pengfei
authors.initials: P
authors.lastname: Fang
authors.forename: Feng
authors.initials: F
authors.lastname: Zheng
authors.forename: Xiujian
authors.initials: X
authors.lastname: Zhao