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Energy Express

Energy Express

  • Editor: Bernard Kippelen
  • Vol. 20, Iss. S2 — Mar. 12, 2012
  • pp: A351–A359

Visible light-driven photocatalysis of doped SrTiO3 tubular structure

Jinwen Shi, Shaohua Shen, Yubin Chen, Liejin Guo, and Samuel S. Mao  »View Author Affiliations


Optics Express, Vol. 20, Issue S2, pp. A351-A359 (2012)
http://dx.doi.org/10.1364/OE.20.00A351


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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.

© 2012 OSA

OCIS Codes
(160.6990) Materials : Transition-metal-doped materials
(260.5130) Physical optics : Photochemistry
(350.6050) Other areas of optics : Solar energy

ToC Category:
Photocatalysis

History
Original Manuscript: November 22, 2011
Revised Manuscript: January 13, 2012
Manuscript Accepted: January 13, 2012
Published: March 9, 2012

Citation
Jinwen Shi, Shaohua Shen, Yubin Chen, Liejin Guo, and Samuel S. Mao, "Visible light-driven photocatalysis of doped SrTiO3 tubular structure," Opt. Express 20, A351-A359 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-S2-A351


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