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Visible-Light-Response and Photocatalytic Activities of TiO2 and SrTiO3 Photocatalysts Codoped with Antimony and Chromium
Abstract
TiO 2 and SrTiO 3 codoped with antimony and chromium showed intense absorption bands in the visible light region and possessed 2.2 and 2.4 eV of energy gaps, respectively. TiO 2 codoped with antimony and chromium evolved O 2 from an aqueous silver nitrate solution under visible light irradiation, while SrTiO 3 codoped with antimony and chromium evolved H 2 from an aqueous methanol solution. The activity of TiO 2 photocatalyst codoped with antimony and chromium was remarkably higher than that of TiO 2 doped with only chromium. It was due to that the charge balance was kept by codoping of Sb 5+ and Cr 3+ ions, resulting in the suppression of formation of Cr 6+ ions and oxygen defects in the lattice which should work as effectively nonradiative recombination centers between photogenerated electrons and holes.
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Shannon, R. D. (1976) · Acta Crystallographica Section A · doi:10.1107/s0567739476001551 · Cited by 66,145
Cited by
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Chen, X., Shen, S., Guo, L., & Mao, S. S. (2010) · Chemical Reviews · doi:10.1021/cr1001645 · Cited by 7,876
Abe, R. (2010) · Journal of Photochemistry and Photobiology C: Photochemistry Reviews · doi:10.1016/j.jphotochemrev.2011.02.003 · Cited by 1,223
Photocatalytic Activities of Noble Metal Ion Doped SrTiO3 under Visible Light Irradiation
Konta, R., Ishii, T., Kato, H., & Kudo, A. (2004) · The Journal of Physical Chemistry B · doi:10.1021/jp049556p · Cited by 939
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Metadata
- Authors
- Kato, H., & Kudo, A.
- Venue
- The Journal of Physical Chemistry B
- Publisher
- American Chemical Society (ACS)
- Published
- 2002-04-23
- Volume
- 106
- Issue
- 19
- Pages
- 5029-5034
- ISSN
- 1520-5207 (ISSN-L)
- 1520-6106
- OpenAlex
- W2067232009
- Cited by
- 830
- References
- 1
- FWCI
- 15.20
- Type
- journal article
- Language
- en
- Open access
- closed
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