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High catalytic activity of heteropolynuclear cyanide complexes containing cobalt and platinum ions: Visible-light driven water oxidation

Title
High catalytic activity of heteropolynuclear cyanide complexes containing cobalt and platinum ions: Visible-light driven water oxidation
Authors
Yamada Y.Oyama K.Gates R.Fukuzumi S.
Ewha Authors
Shunichi Fukuzumi
SCOPUS Author ID
Shunichi Fukuzumiscopus
Issue Date
2015
Journal Title
Angewandte Chemie - International Edition
ISSN
1433-7851JCR Link
Citation
vol. 54, no. 19, pp. 5613 - 5617
Keywords
cobaltheterogeneous catalysisplatinumstructure elucidationwater oxidation
Publisher
Wiley-VCH Verlag
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
A near-stoichiometric amount of O<inf>2</inf> was evolved as observed in the visible-light irradiation of an aqueous buffer (pH 8) containing [RuII(2,2'-bipyridine)<inf>3</inf>] as a photosensitizer, Na<inf>2</inf>S<inf>2</inf>O<inf>8</inf> as a sacrificial electron acceptor, and a heteropolynuclear cyanide complex as a water-oxidation catalyst. The heteropolynuclear cyanide complexes exhibited higher catalytic activity than a polynuclear cyanide complex containing only CoIII or PtIV ions as C-bound metal ions. The origin of the synergistic effect between Co and Pt ions is discussed in relation to electronic and local atomic structures of the complexes. A platinum assist: A near-stoichiometric amount of O<inf>2</inf> was evolved as observed in the visible-light irradiation of an aqueous buffer (pH 8) containing [RuII(2,2'-bipyridine)<inf>3</inf>] as a photosensitizer, Na<inf>2</inf>S<inf>2</inf>O<inf>8</inf> as a sacrificial electron acceptor, and a heteropolynuclear cyanide complex as a water-oxidation catalyst. The synergistic effect between the Co and Pt ions was confirmed to facilitate the water-oxidation catalysis by the heteropolynuclear complex. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
DOI
10.1002/anie.201501116
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자연과학대학 > 화학·나노과학전공 > Journal papers
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