title: Shining light on integrity of a tetracobalt-polyoxometalate water oxidation catalyst by X-ray spectroscopy before and after catalysis.
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.
authors.affiliation: Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Str. 2, 12489 Berlin, Germany. christian.limberg@chemie.hu-berlin.de.
authors.forename: Rafael
authors.initials: R
authors.lastname: Schiwon
authors.forename: Katharina
authors.initials: K
authors.lastname: Klingan
authors.forename: Holger
authors.initials: H
authors.lastname: Dau
authors.forename: Christian
authors.initials: C
authors.lastname: Limberg