Influence of the nanocluster {Mo₇₂Fe₃₀} polyoxometalate on oxidation of iodide–ions by persulfate

S.Yu. Menshikov¹, K.A. Belozerova², A.A. Ostroushko²

¹ Ural State Mining University
² Scientific Research Institute of Physics and Applied Mathematics of Institute of Natural Sciences and Mathematics of Ural Federal University named after the first President of Russia B.N. Yeltsin

DOI: 10.26456/pcascnn/2020.12.853

Original article

Abstract: Catalytic properties of the nanocluster iron-molybdenum polyoxometalate {Mo₇₂Fe₃₀} in solutions during the oxidation of iodide ions by persulfate have been studied. Automated installation based on spectrophotometric method of analysis controlled by computer was used. Comparison of literary data and kinetic datа on the oxidation of iodide with persulfate showed that keplerate {Mo₇₂Fe₃₀} is a heterogeneous catalyst. These data allowed to assume a non-radical mechanism for persulfate decomposition on the surface of cluster molecules at the first stage of the potassium iodide oxidation reaction. The value of the effective activation energy of the process indicates the catalytic effect of {Mo₇₂Fe₃₀} at the intermediate stage of the decomposition of the hydrogen peroxide.

Keywords: nanocluster iron-molybdenum polyoxometalate, keplerate, catalytic properties, oxidation of iodide ions, potassium persulfate, hydrogen peroxide.

• Sergei Yu. Menshikov – Ph.D., Docent of Chemistry Department, Ural State Mining University
• Ksenia A. Belozerova – student of Chemistry Department of Institute of Natural Sciences and Mathematics, Ural Federal University named after the first President of Russia B.N. Yeltsin
• Alexander A. Ostroushko – Dr. Sc., Professor, Professor of Physical and Inorganic Chemistry Department of Institute of Natural Sciences and Mathematics of Ural Federal University named after the first President of Russia B.N. Yeltsin, Chief Researcher and Head of Department of Chemical Materials Science, Scientific Research Institute of Physics and Applied Mathematics of Institute of Natural Sciences and Mathematics of Ural Federal University named after the first President of Russia B.N. Yeltsin

Reference:

Menshikov, S.Yu. Influence of the nanocluster {Mo₇₂Fe₃₀} polyoxometalate on oxidation of iodide–ions by persulfate / S.Yu. Menshikov, K.A. Belozerova, A.A. Ostroushko // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2020. — I. 12. — P. 853-859. DOI: 10.26456/pcascnn/2020.12.853. (In Russian).

Full article (in Russian): download PDF file

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