Format

Send to

Choose Destination
J Am Chem Soc. 2012 Jul 11;134(27):11096-9. doi: 10.1021/ja303826a. Epub 2012 Jun 28.

Elucidating the domain structure of the cobalt oxide water splitting catalyst by X-ray pair distribution function analysis.

Author information

1
Chemical Sciences and Engineering Division, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA.

Abstract

Pair distribution function (PDF) analysis was applied for structural characterization of the cobalt oxide water-splitting catalyst films using high energy X-ray scattering. The catalyst was found to be composed of domains consistent with a cobalt dioxide lattice sheet structure, possibly containing a Co(4)O(4) cubane-type "defect". The analysis identifies the film to consist of domains composed of 13-14 cobalt atoms with distorted coordination geometries that can be modeled by alteration in terminal oxygen atom positions at the domain edge. Phosphate is seen as a disordered component in the films. This work establishes an approach that can be applied to study the structure of in situ cobalt oxide water-splitting film under functional catalytic conditions.

PMID:
22720737
DOI:
10.1021/ja303826a

Supplemental Content

Full text links

Icon for American Chemical Society
Loading ...
Support Center