Kinetics of photocatalytic decomposition of Fenuron over TiO2 in aqueous solutionReportar como inadecuado

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International Journal of Photoenergy - Volume 4 2002, Issue 2, Pages 85-89

Laboratoire des Sciences et Technologie de l'Environnement, Faculté des Sciences, Université Mentouri, Constantine 25000, Algeria

Laboratoire de Photochimie Moléculaire et Macromoléculaire UMR 6505 Université Blaise Pascal, Aubiére Cedex F-63177, France

Copyright © 2002 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The kinetics of the photocatalytic degradation of Fenuron 3-phenyl-1,1-dimethylurea in aqueoussuspension of several semiconductors irradiated at 365nm has been investigated. The kinetics of thereaction is well described by the Langmuir-Hinshelwood model showing that the degradation reactions occuron the semiconductors particles surface. The primary photoproducts were identified by RMN and GC-MS.The main initial reaction is hydroxylation in ortho and para position with respect to the urea function. Therate of the photocatalytic degradation increases upon addition of small amounts of hydrogen peroxide, butis slightly reduced by chloride ions.

Autor: Ouarda Brahmia, Abdelaziz Boulkamh, Tahar Sehili, Jean-Pierre Aguer, and Claire Richard



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