The DOI matches its Crossref record.
Cobalt−Oxo Core of a Water-Oxidizing Catalyst Film
Abstract
In photosynthesis, water is oxidized at a protein-bound Mn(4)Ca complex. Artificial water-oxidation catalysts that are similarly efficient and based on inexpensive and abundant materials are of great interest. Recently, assembly of a catalyst as an amorphous layer on inert cathodes by electrodeposition starting from an aqueous solution of cobalt ions and potassium phosphate has been reported. X-ray absorption spectroscopy on the cobalt catalyst film (CoCF) suggests that its central structural unit is a cluster of interconnected complete or incomplete Co(III)-oxo cubanes. Potassium ligation to Co-bridging oxygens could result in Co(3)K(mu-O)(4) cubanes, in analogy to the Mn(3)Ca(mu-O)(4) cubane motif proposed for the photosynthetic Mn complex. The similarities in function and oxidative self-assembly of CoCF and the catalytic Mn complex in photosynthesis are striking. Our study establishes a close analogy also with respect to the metal-oxo core of the catalyst.
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Metadata
- Authors
- Risch, M., Khare, V., Zaharieva, I., Gerencser, L., Chernev, P., & Dau, H.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2009-05-06
- Volume
- 131
- Issue
- 20
- Pages
- 6936-6937
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W1979338410
- Cited by
- 281
- References
- 0
- FWCI
- 11.38
- Type
- journal article
- Language
- en
- Open access
- closed
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