Email this article Using the Mössbauer spectroscopy of 121Sb nuclei to differentiate the effects of Cr and Sb co-dopants on the photocatalytic activity of anatase-type polycrystalline TiO2 powders
- Authors: Korolenko M.V.1, Fabritchnyi P.B.1, Afanasov M.I.1, Astashkin R.A.1
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Affiliations:
- Department of Chemistry
- Issue: Vol 81, No 7 (2017)
- Pages: 836-839
- Section: Article
- URL: https://journals.rcsi.science/1062-8738/article/view/185127
- DOI: https://doi.org/10.3103/S1062873817070152
- ID: 185127
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Abstract
The rates of the photocatalytic decolorization of methyl orange solutions in the presence of anatase powders modified by Cr3+ and Sb5+ co-dopants are compared with allowance for data on the actual valence state of antimony in the catalyst, obtained using 121Sb Mössbauer spectroscopy. The reported results point to the catalytic activity of the Cr6+ ions formed to compensate for the Cr3+ charge deficit in antimony-free samples.
About the authors
M. V. Korolenko
Department of Chemistry
Author for correspondence.
Email: pf@radio.chem.msu.ru
Russian Federation, Moscow, 119991
P. B. Fabritchnyi
Department of Chemistry
Email: pf@radio.chem.msu.ru
Russian Federation, Moscow, 119991
M. I. Afanasov
Department of Chemistry
Email: pf@radio.chem.msu.ru
Russian Federation, Moscow, 119991
R. A. Astashkin
Department of Chemistry
Email: pf@radio.chem.msu.ru
Russian Federation, Moscow, 119991
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