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Polyoxometalate water oxidation catalysts and methods of use thereof

Patent ·
OSTI ID:1154930
; ; ; ;
Homogeneous water oxidation catalysts (WOCs) for the oxidation of water to produce hydrogen ions and oxygen, and methods of making and using thereof are described herein. In a preferred embodiment, the WOC is a polyoxometalate WOC which is hydrolytically stable, oxidatively stable, and thermally stable. The WOC oxidized waters in the presence of an oxidant. The oxidant can be generated photochemically, using light, such as sunlight, or electrochemically using a positively biased electrode. The hydrogen ions are subsequently reduced to form hydrogen gas, for example, using a hydrogen evolution catalyst (HEC). The hydrogen gas can be used as a fuel in combustion reactions and/or in hydrogen fuel cells. The catalysts described herein exhibit higher turn over numbers, faster turn over frequencies, and/or higher oxygen yields than prior art catalysts.
Research Organization:
Emory University, Atlanta, GA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FG02-03ER15461
Assignee:
Emory University (Atlanta, GA)
Patent Number(s):
8,822,367
Application Number:
13/256,227
OSTI ID:
1154930
Country of Publication:
United States
Language:
English

References (12)

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journal April 2008
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Homogeneous Light-Driven Water Oxidation Catalyzed by a Tetraruthenium Complex with All Inorganic Ligands journal June 2009

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