Preparation of S, C cation-codoped SrTiO 3 and its photocatalytic activity under visible light
Applied Catalysis A: General, ISSN: 0926-860X, Vol: 288, Issue: 1, Page: 74-79
2005
- 196Citations
- 78Captures
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Article Description
S, C cation-codoped strontium titanium dioxide (SrTiO 3 ) was synthesized by calcination of a mixture of thiourea and SrTiO 3 powders in a lidded crucible. After C and S ions were doped into SrTiO 3, the absorption edge of SrTiO 3 powder was greatly shifted from 400 to 700 nm. The obtained powder was found by XPS, XRD and FT-IR to have a perovskite structure in which C and S atoms were incorporated into SrTiO 3. S and C doping improved the photocatalytic activity of the doped SrTiO 3 for oxidation of 2-propanol. Under a wide range of light irradiation at wavelengths longer than 350 nm, the photocatalytic activity levels of C, S cation-codoped SrTiO 3 were about two times higher than those of pure SrTiO 3. We found that a new absorption edge was formed in the visible light region due to doping of S and C atoms. The formation of this new absorption edge might be the reason for the high level of visible-light photocatalytic activity of this substance.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0926860X05003030; http://dx.doi.org/10.1016/j.apcata.2005.04.035; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=21244465066&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0926860X05003030; https://dx.doi.org/10.1016/j.apcata.2005.04.035
Elsevier BV
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