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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/6875

Title: Photodegradation of polyaromatic hydrocarbons over thin film of TiO2 nanoparticles; a study of intermediate photoproducts
Authors: PAL, B
SHARON, M
Keywords: dioxide-mediated oxidation
waste-water pollutants
photocatalytic degradation
titanium-dioxide
heterogeneous photocatalysis
nonionic surfactants
naphthalene
decomposition
suspensions
alpha-fe2o3
Issue Date: 2000
Publisher: ELSEVIER SCIENCE BV
Citation: JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 160(2), 453-460
Abstract: The photocatalytic degradation of saturated aqueous solution of naphthalene and anthracene was studied over thin films of porous TiO2 particles on glass substrate, prepared by sol-gel process. Surface morphology and structural features were studied by SEM, TEM and Laser Raman Spectroscopy. These films have been found to be very efficient and the total photomineralisation of these organics to carbon dioxide and water occurs in air-equilibrated solution within 1 h. Concentration changes linearly with the illumination time, and high rate constants are obtained for the degradation of these organics. The pH of the solution changes with the irradiation time due to the formation of intermediate photoproducts, e.g., 5,8-dihydroxynaphthaquinone, and 9,10-anthraquinone, etc. Photodegradation mechanism and the detection of reaction intermediates have been discussed in details. (C) 2000 .
URI: http://dx.doi.org/10.1016/S1381-1169(00)00280-6
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6875
http://hdl.handle.net/10054/6875
ISSN: 1381-1169
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