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Copper-containing hybrid compounds based on extremely rare [V2Mo6O26]6- POM as water oxidation catalysts
Taras Shevchenko Natl Univ Kyiv, Dept Chem, Volodymyrska 64-13, UA-01601 Kiev, Ukraine.
Taras Shevchenko Natl Univ Kyiv, Dept Chem, Volodymyrska 64-13, UA-01601 Kiev, Ukraine.ORCID iD: 0000-0002-0012-5108
Taras Shevchenko Natl Univ Kyiv, Dept Chem, Volodymyrska 64-13, UA-01601 Kiev, Ukraine.
Natl Acad Sci Ukraine, Inst Single Crystals, Nauky Ave 60, UA-61001 Kharkov, Ukraine.
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2019 (English)In: INORGANIC CHEMISTRY FRONTIERS, ISSN 2052-1553, Vol. 6, no 7, p. 1813-1823Article in journal (Refereed) Published
Abstract [en]

Herein, we report two approaches to the synthesis of heterometallic complexes (NH4)(2n)(H(2)en)(n){[Cu(en)(2)][alpha-V2Mo6O26]}center dot 4nH(2)O (1), (NH4)(2){[Cu(dien)(H2O)](2)[alpha-V2Mo6O26]}center dot 5H(2)O (2) and (NH4)(2){[Cu(dien)(H2O)](2)[alpha-V2Mo6O26]}center dot 8H(2)O (3) that have been employed in homogeneous photochemical oxidation of water to dioxygen. In these hybrid metalorganic-inorganic compounds, copper-containing complex fragments are covalently bound to the rare vanadium-disubstituted alpha-octamolybdate cluster. They exhibit variable catalytic activity controlled by the local coordination environment of copper reaching a notably high turnover frequency of 0.24 s(-1) for 3 in combination with a relatively low water oxidation overpotential. The complexes have been also used as precursors for the preparation of mixed oxide phases that have proven to be active heterogeneous water oxidation catalysts.

Place, publisher, year, edition, pages
2019. Vol. 6, no 7, p. 1813-1823
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Inorganic Chemistry
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URN: urn:nbn:se:uu:diva-390977DOI: 10.1039/c9qi00040bISI: 000475394700021OAI: oai:DiVA.org:uu-390977DiVA, id: diva2:1343736
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Swedish Institute, 23913/2017Available from: 2019-08-19 Created: 2019-08-19 Last updated: 2019-08-19Bibliographically approved

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Makhankova, Valeriya G.Pavliuk, Mariia V.Shylin, Sergii I.
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