M. V. Korolenko, P. B. Fabrichnyi, M. I. Afanasov, “Effect of a long-term exposure of anatase TiO2 powder doped with surface-located Sb3+ ions to UV radiation on its photocatalytic activity”, Mendeleev Commun., 2021, Volume 31, Issue 6,Pages 896

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Communications

Effect of a long-term exposure of anatase TiO₂ powder doped with surface-located Sb³⁺ ions to UV radiation on its photocatalytic activity

M. V. Korolenko, P. B. Fabrichnyi, M. I. Afanasov

Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russian Federation

Abstract: Ultraviolet photocatalytic experiments on the kinetics of decolorization of methyl orange and the ¹²¹Sb Mössbauer characterization of the title catalyst were performed. The stereochemically active electronic lone pair of Sb³⁺ was found to completely deactivate the neighboring oxygen vacancy as a recombination center towards the photogenerated electrons and holes.

Keywords: Sb-doped TiO2, photocatalytic decolorization, methyl orange, ¹²¹Sb Mossbauer spectroscopy, Sb³⁺ electronic lone pair, stereochemical activity.

Language: English

DOI: 10.1016/j.mencom.2021.11.043

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