Titanium and Iron Oxide-Based Magnetic Photocatalysts for Oxidation of Organic Compounds and Sulfur Dioxide |
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| Authors: | D. G. Shchukin E. A. Ustinovich D. V. Sviridov A. I. Kulak |
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| Affiliation: | (1) Research Institute of Physicochemical Problems, Belarussian State University, ul. Leningradskaya 14, Minsk, 220050, Belarus;(2) Belarussian State University, ul. Leningradskaya 14, Minsk, 220050, Belarus;(3) Institute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, ul. Surganova 9, Minsk, 220072, Belarus |
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| Abstract: | New approaches to designing magnetic photocatalysts on the basis of microheterogeneous structures built according to the scheme  magnetic core–photocatalytic shell were proposed. A procedure for preparing the Zn0.35Ni0.65Fe2O4/SiO2/TiO2 catalyst designed for the destructive oxidation of organic compounds, as well as the Fe3O4/Fe2O3/Fe4[Fe(CN)6]3: KCo[Co(CN)6] and Fe3O4/Fe2O3/polyaniline catalysts designed for the photo-oxidation of SO2, was considered. It was shown that the reduction of molecular oxygen proceeded primarily to H2O2, as a result of doping the polyaniline shell with 18-tungstophosphoric acid, and the quantum yield of the SO2 photo-oxidation reaction was doubled by coupling heterogeneous photocatalysis with homogeneous catalysis (involving the hydrogen peroxide formed). |
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