STUDY ON TIO2-MEDIATED PHOTOCATALYTIC DEGRADATION OF METHYLENE-BLUE

Authors
LAKSHMI S RENGANATHAN R FUJITA S
Citation
S. Lakshmi et al., STUDY ON TIO2-MEDIATED PHOTOCATALYTIC DEGRADATION OF METHYLENE-BLUE, Journal of photochemistry and photobiology. A, Chemistry, 88(2-3), 1995, pp. 163-167
Citations number
19
Categorie Soggetti
Chemistry Physical
Journal title
Journal of photochemistry and photobiology. A, Chemistry → ACNP
ISSN journal
10106030
Volume
88
Issue
2-3
Year of publication
1995
Pages
163 - 167
Database
ISI
SICI code
1010-6030(1995)88:2-3<163:SOTPDO>2.0.ZU;2-9
Abstract
The degradation (oxidation) of methylene blue assisted by TiO2 photoca talysis (with an irradiation wavelength of 365 nm) was investigated in aqueous suspension. The rate constants for this heterogeneous photoca talysis were evaluated as a function of the concentration of the dye, the amount of TiO2 and the pH. The reaction is found to conform to a L angmuir adsorption isotherm and the rate vs. pH profile exhibits a lin ear increase with pH in acidic solutions with a maximum at around pH 6 .9.