PHOTOCATALYTIC DEGRADATION OF SALICYLIC-ACID BY COLLOIDAL FE2O3 PARTICLES

Authors
PAL B SHARON M
Citation
B. Pal et M. Sharon, PHOTOCATALYTIC DEGRADATION OF SALICYLIC-ACID BY COLLOIDAL FE2O3 PARTICLES, Journal of chemical technology and biotechnology, 73(3), 1998, pp. 269-273
Citations number
17
Categorie Soggetti
Engineering, Chemical",Chemistry,"Biothechnology & Applied Migrobiology
Journal title
Journal of chemical technology and biotechnology → ACNP
ISSN journal
02682575
Volume
73
Issue
3
Year of publication
1998
Pages
269 - 273
Database
ISI
SICI code
0268-2575(1998)73:3<269:PDOSBC>2.0.ZU;2-Q
Abstract
The photocatalytic decomposition of salicylic acid with visible light in an oxygenated aqueous suspension of colloidal alpha-Fe2O3 particles has been studied. About 10-20 ppm of this organic is degraded within 1 h of irradiation, depending upon the initial salicylic acid concentr ation. Kinetic parameters have been investigated in terms of a first o rder rate equation. The rate constant (k(ap)) for this heterogeneous p hotocatalysis was evaluated as a function of the initial concentration of salicylic acid. Carbon dioxide has been detected over prolonged vi sible light irradiation. (C) 1998 Society of Chemical Industry.