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Issue 7, 2019
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Copper-containing hybrid compounds based on extremely rare [V2Mo6O26]6– POM as water oxidation catalysts

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Abstract

Herein, we report two approaches to the synthesis of heterometallic complexes (NH4)2n(H2en)n{[Cu(en)2][α-V2Mo6O26]}·4nH2O (1), (NH4)2{[Cu(dien)(H2O)]2[α-V2Mo6O26]}·5H2O (2) and (NH4)2{[Cu(dien)(H2O)]2[α-V2Mo6O26]}·8H2O (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 α-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.

Graphical abstract: Copper-containing hybrid compounds based on extremely rare [V2Mo6O26]6– POM as water oxidation catalysts

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Publication details

The article was received on 10 Jan 2019, accepted on 25 May 2019 and first published on 29 May 2019


Article type: Research Article
DOI: 10.1039/C9QI00040B
Inorg. Chem. Front., 2019,6, 1813-1823
  • Open access: Creative Commons BY license
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    Copper-containing hybrid compounds based on extremely rare [V2Mo6O26]6– POM as water oxidation catalysts

    H. I. Buvailo, V. G. Makhankova, V. N. Kokozay, I. V. Omelchenko, S. V. Shishkina, J. Jezierska, M. V. Pavliuk and S. I. Shylin, Inorg. Chem. Front., 2019, 6, 1813
    DOI: 10.1039/C9QI00040B

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