Structural Requirements in Lithium Cobalt Oxides for the Catalytic Oxidation of Water

Who can split water? Two polymorphs of nanocrystalline cubic spinel and rhombohedral layered lithium cobalt oxides have been prepared and their application in the photocatalytic oxidation of water examined. The main factor that determines the catalytic activity of the different phases is the presenc...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2012-02, Vol.51 (7), p.1616-1619
Main Authors: Gardner, Graeme P., Go, Yong Bok, Robinson, David M., Smith, Paul F., Hadermann, Joke, Abakumov, Artem, Greenblatt, Martha, Dismukes, G. Charles
Format: Article
Language:English
Subjects:
Catalysis
Catalysts
Catalytic activity
Cobalt
Cobalt - chemistry
Cobalt oxides
heterogeneous catalysis
Lithium
Models, Molecular
Molecular Structure
Nanocrystals
Oxidation
Oxidation-Reduction
Oxides - chemistry
Particle Size
Phases
Photooxidation
Spinel
spinels
Surface Properties
Water - chemistry
water splitting
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Summary:Who can split water? Two polymorphs of nanocrystalline cubic spinel and rhombohedral layered lithium cobalt oxides have been prepared and their application in the photocatalytic oxidation of water examined. The main factor that determines the catalytic activity of the different phases is the presence of a Co4O4 cubic core, which is present in the cubic form of the catalyst, but not in the layered structure (see scheme).
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201107625