Photocatalytic degradative oxidation of Diuron in organic and semi-aqueoussystems over titanium dioxide catalyst

Authors
Bouquet-Somrani, C Fajula, F Finiels, A Graffin, P Geneste, P Olive, JL
Citation
C. Bouquet-somrani et al., Photocatalytic degradative oxidation of Diuron in organic and semi-aqueoussystems over titanium dioxide catalyst, NEW J CHEM, 24(12), 2000, pp. 999-1002
Citations number
18
Categorie Soggetti
Chemistry
Journal title
NEW JOURNAL OF CHEMISTRY
ISSN journal
11440546 → ACNP
Volume
24
Issue
12
Year of publication
2000
Pages
999 - 1002
Database
ISI
SICI code
1144-0546(200012)24:12<999:PDOODI>2.0.ZU;2-2
Abstract
The photocatalytic degradation of Diuron in organic and semi-aqueous media is compared. The rates of disappearence fit Langmuir-Hinshelwood kinetics a nd the parameters k and K have been determined. A main intermediate was det ected in all cases and its structure has been determined. This product is o btained by oxidation of a methyl group of the urea moiety. Several compound s [trichloroaniline, dichloronitrobenzene, N-(3,4-dichlorophenyl)formamide, dimethylurea...] were detected by GC-MS analysis in both media white hydro xylated compounds were only observed in the semi-aqueous medium.