XAFS STUDY OF CO(II) AT THE ZNO-AQUEOUS AND ZNS-AQUEOUS INTERFACES

Authors
PERSSON P PARKS GA BROWN GE
Citation
P. Persson et al., XAFS STUDY OF CO(II) AT THE ZNO-AQUEOUS AND ZNS-AQUEOUS INTERFACES, Physica. B, Condensed matter, 209(1-4), 1995, pp. 453-454
Citations number
4
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
209
Issue
1-4
Year of publication
1995
Pages
453 - 454
Database
ISI
SICI code
0921-4526(1995)209:1-4<453:XSOCAT>2.0.ZU;2-T
Abstract
Co(II) adsorption at ZnO- and ZnS-aqueous interfaces was studied with the XAFS technique. The results show the presence of both 4- and 6-coo rdinated oxygen-ligated Co(II) on ZnO, corresponding to Co-O distances of 1.95 and 2.1 Angstrom, respectively. At ZnS two Co-O distances are also indicated and a Co-S correlation at 2.36 Angstrom is revealed. H igher shell analysis indicates a fraction of bidentately coordinated C o(II) on ZnO. Increased coverage yields a phase structurally close to Co(OH)(2) on both adsorbents.