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Structural, magnetic, thermal and visible light-driven water oxidation studies of heterometallic Mn/V complexes
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
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2015 (English)In: Polyhedron, ISSN 0277-5387, E-ISSN 1873-3719, Vol. 88, 81-89 p.Article in journal (Refereed) Published
Abstract [en]

In this paper a novel synthetic route, being a paradigm of the "direct synthesis" approach, is proposed for the preparation of heterometallic Mn/V compounds by a one-pot reaction. Two synthesized complexes, (NH4)(2)[Mn-2(HGly)(H2O)(10)][V10O28]center dot(HGlY)center dot 2H(2)O (1) and (NR4)(2)[Mn(beta-HAIa)(H2O)(5)](2)[V10O28]center dot 2H(2)O (2) (HGly = glycine, beta-HAla = beta-alanine) have been fully characterized by elemental analysis, single-crystal X-ray diffraction, cyclic voltammetry, magnetic susceptibility, FTIR and EPR spectroscopy. Thermal degradation of these compounds lead to the formation of porous, solid mixed oxides V2O5/MnV2O6 in a ratio of 3:2, which were analyzed by X-ray phase analysis and scanning electron microscopy with energy dispersive X-ray microanalysis (SEM/EDX). Additionally the ability of 1 and 2 to act as oxygen evolving water oxidation catalysts under visible light-driven conditions have been studied in a Clark type cell and by ex situ EPR spectroscopy.

Place, publisher, year, edition, pages
2015. Vol. 88, 81-89 p.
Keyword [en]
Manganese, Vanadium, Direct synthesis, Mixed oxides, Water oxidation
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-252729DOI: 10.1016/j.poly.2014.12.019ISI: 000352748700011OAI: oai:DiVA.org:uu-252729DiVA: diva2:811461
Available from: 2015-05-12 Created: 2015-05-11 Last updated: 2017-12-04Bibliographically approved

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Pavliuk, Mariia V.Thapper, AndersStyring, Stenbjörn

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