Shining light on integrity of a tetracobalt-polyoxometalate water oxidation catalyst by X-ray spectroscopy before and after catalysis

Authors :: Rafael Schiwon
Katharina Klingan
Christian Limberg
Holger Dau
Source :: Chemical communications (Cambridge, England). 50(1)
Publication Year :: 2013
Abstract: Modification of the Co-oxo cores of cobalt-polyoxometalate water oxidation catalysts is detectable by X-ray absorption spectroscopy (XAS) as demonstrated by comparison of Na10[Co4(H2O)2(PW9O34)2] (1) and Na17[((Co(H2O))Co2PW9O34)2(PW6O26)] (2). XAS reveals the integrity of 1 uncompromised by oxidant-driven water oxidation, which proceeds without formation of catalytic cobalt oxide.

Subjects :: X-ray spectroscopy
X-ray absorption spectroscopy
Absorption spectroscopy
Chemistry
Inorganic chemistry
Metals and Alloys
General Chemistry
Photochemistry
Catalysis
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Catalytic oxidation
Polyoxometalate
Materials Chemistry
Ceramics and Composites
Cobalt oxide

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