Visible light-driven photocatalysis of doped SrTiO3 tubular structure

Jinwen Shi, Shaohua Shen, Yubin Chen, Liejin Guo, Samuel S. Mao

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


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 solidstate 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.

Original languageBritish English
Pages (from-to)A351-A359
JournalOptics Express
Issue number102
StatePublished - 12 Mar 2012


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