title: Visible light-driven photocatalysis of doped SrTiO3 tubular structure.
abstract: SrTiO3 tubular structures co-doped with Cr and Ta were synthesized through a combination of solvothermal-hydrothermal processes. X-ray photoelectron spectroscopy (XPS) measurements of the oxidation state of Cr ions reveal that the formation of Cr6+ ions, which would serve as the non-radiative recombination centers for photogenerated electrons and holes, was suppressed without the process of high temperature hydrogen reduction. Compared to similar co-doped materials synthesized by solid-state reaction, (Cr, Ta) co-doped SrTiO3 tubular structures have significantly higher photocatalytic activity for hydrogen evolution as measured in an aqueous methanol solution under visible light irradiation.
authors.affiliation: International Research Center for Solar-Hydrogen Renewable and Clean Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Shaanxi 710049, China.
authors.forename: Jinwen
authors.initials: J
authors.lastname: Shi
authors.forename: Shaohua
authors.initials: S
authors.lastname: Shen
authors.forename: Yubin
authors.initials: Y
authors.lastname: Chen
authors.forename: Liejin
authors.initials: L
authors.lastname: Guo
authors.forename: Samuel S
authors.initials: SS
authors.lastname: Mao