Title:
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Efficient light-driven water oxidation catalysis by dinuclear Ru complexes
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Author:
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Berardi, Serena; L. Francàs, Laia; S. Neudeck; Maji, Sommath; Benet-Buchholz, Jordi; Meyer, Franc; Llobet, Antoni
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Abstract:
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Mastering the light-induced four-electron oxidation of water to molecular oxygen is a key step towards the achievement of overall water splitting to produce alternative solar fuels. In this work, we report two rugged molecular pyrazolate-based diruthenium complexes that efficiently catalyze visible-light-driven water oxidation. These complexes were fully characterized both in the solid state (by X-ray diffraction analysis) and in solution (spectroscopically and electrochemically). Benchmark performances for homogeneous oxygen production have been obtained for both catalysts in the presence of a photosensitizer and a sacrificial electron acceptor at pH 7, and a turnover frequency of up to 11.1 s−1 and a turnover number of 5300 were obtained after three successive catalytic runs. Under the same experimental conditions with the same setup, the pyrazolate-based diruthenium complexes outperform other well-known water oxidation catalysts owing to both electrochemical and mechanistic aspects. |
Publication date:
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2015 |
Subject(s):
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complexes photosensitizer redox chemistry ruthenium water oxidation |
Rights:
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© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim |
Document type:
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Article |
DOI:
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https://dx.doi.org/10.1002/cssc.201500798
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Published by:
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Wiley
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Publish at:
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ChemSusChem Communications
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Share:
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