PROBING PHOTOCATALYTIC REACTIONS IN SEMICONDUCTOR SYSTEMS - STUDY OF THE CHEMICAL INTERMEDIATES IN 4-CHLOROPHENOL DEGRADATION BY A VARIETY OF METHODS

Authors
GRAY KA STAFFORD U
Citation
Ka. Gray et U. Stafford, PROBING PHOTOCATALYTIC REACTIONS IN SEMICONDUCTOR SYSTEMS - STUDY OF THE CHEMICAL INTERMEDIATES IN 4-CHLOROPHENOL DEGRADATION BY A VARIETY OF METHODS, Research of chemical intermediates, 20(8), 1994, pp. 835-853
Citations number
47
Categorie Soggetti
Chemistry
Journal title
Research of chemical intermediates → ACNP
ISSN journal
09226168
Volume
20
Issue
8
Year of publication
1994
Pages
835 - 853
Database
ISI
SICI code
0922-6168(1994)20:8<835:PPRISS>2.0.ZU;2-E
Abstract
The photocatalytic transformation of 4-chlorophenol (4-CP) has been st udied in aqueous slurries, on powders and on immobilized particulate f ilms of TiO2. These results are compared to those obtained using gamma and pulse radiolysis in order to establish a comprehensive picture of the 4-CP reaction pathway in TiO2 systems. The disappearance of 4-CP and its reaction intermediates in TiO2 slurries involves a combination of hydroxyl radical oxidation, direct electron transfer and surface c hemical reactions.