PHOTOCATALYTIC OXIDATION OF 2,4-DICHLOROPHENOXYACETIC ACID WITH TITANIA PHOTOCATALYST - COMPARISON OF SUPPORTED AND SUSPENDED TIO2

Authors
MODESTOV AD LEV O
Citation
Ad. Modestov et O. Lev, PHOTOCATALYTIC OXIDATION OF 2,4-DICHLOROPHENOXYACETIC ACID WITH TITANIA PHOTOCATALYST - COMPARISON OF SUPPORTED AND SUSPENDED TIO2, Journal of photochemistry and photobiology. A, Chemistry, 112(2-3), 1998, pp. 261-270
Citations number
35
Categorie Soggetti
Chemistry Physical
Journal title
Journal of photochemistry and photobiology. A, Chemistry → ACNP
ISSN journal
10106030
Volume
112
Issue
2-3
Year of publication
1998
Pages
261 - 270
Database
ISI
SICI code
1010-6030(1998)112:2-3<261:POO2AW>2.0.ZU;2-2
Abstract
The photodegradation of 2,4-dichlorophenoxyacetic acid using illuminat ed titania particles was studied in buffered water solutions at pH 9.2 . A simplified phenomenological model which enables comparison of acti vity of suspended and supported photocatalyst on the basis of utilisat ion of light is proposed. The model shows saturation of photodegradati on rate with increase of amount of photocatalyst on support or in susp ension. The features of the model were verified by studies of the phot ocatalytic activity of TiO2 suspended and supported on flat glass plat e and on floating particles. (C) 1998 Elsevier Science S.A.