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A molecular ruthenium catalyst with water-oxidation activity comparable to that of photosystem II

Title
A molecular ruthenium catalyst with water-oxidation activity comparable to that of photosystem II
Authors
Duan L.Bozoglian F.Mandal S.Stewart B.Privalov T.Llobet A.Sun L.
Ewha Authors
Antoni Llobet
SCOPUS Author ID
Antoni Llobetscopus
Issue Date
2012
Journal Title
Nature Chemistry
ISSN
1755-4330JCR Link
Citation
Nature Chemistry vol. 4, no. 5, pp. 418 - 423
Indexed
SCI; SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
Across chemical disciplines, an interest in developing artificial water splitting to O 2 and H 2, driven by sunlight, has been motivated by the need for practical and environmentally friendly power generation without the consumption of fossil fuels. The central issue in light-driven water splitting is the efficiency of the water oxidation, which in the best-known catalysts falls short of the desired level by approximately two orders of magnitude. Here, we show that it is possible to close that 'two orders of magnitude' gap with a rationally designed molecular catalyst [Ru(bda)(isoq) 2] (H 2 bda = 2,2'-bipyridine-6,6'- dicarboxylic acid; isoq = isoquinoline). This speeds up the water oxidation to an unprecedentedly high reaction rate with a turnover frequency of >300 s -1. This value is, for the first time, moderately comparable with the reaction rate of 100-400s -1 of the oxygen-evolving complex of photosystem II in vivo. © 2012 Macmillan Publishers Limited. All rights reserved.
DOI
10.1038/nchem.1301
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일반대학원 > 바이오융합과학과 > Journal papers
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