Using the Mössbauer spectroscopy of  121 Sb nuclei to differentiate the effects of Cr and Sb co-dopants on the photocatalytic activity of anatase-type polycrystalline TiO 2  powders

M. V. Korolenko; P. B. Fabritchnyi; M. I. Afanasov; R. A. Astashkin

doi:10.3103/S1062873817070152

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

作者: Korolenko M.V.¹, Fabritchnyi P.B.¹, Afanasov M.I.¹, Astashkin R.A.¹
隶属关系:
1. Department of Chemistry
期: 卷 81, 编号 7 (2017)
页面: 836-839
栏目: Article
URL: https://journals.rcsi.science/1062-8738/article/view/185127
DOI: https://doi.org/10.3103/S1062873817070152
ID: 185127

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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.