Photocatalytic degradation of sulfonylurea herbicides in aqueous TiO2

被引：96
作者：
Vulliet, E
Emmelin, C
Chovelon, JM
Guillard, C
Herrmann, JM
机构：
[1] Univ Lyon 1, UMR 5634, Lab Applicat Chim Environm, F-69622 Villeurbanne, France
[2] Ecole Cent Lyon, Lab Ingn & Fonctionnalisat Surfaces, UMR 5621, F-69131 Ecully, France
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2002年 / 38卷 / 02期
关键词：
cinosulfuron; triasulfuron; sulfonylurea; photocatalysis; TiO2;
D O I：
10.1016/S0926-3373(02)00035-8
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The degradation of two sulfonylurea (Sus) herbicides, cinosulfuron and triasulfuron, has been investigated in aqueous solutions containing TiO2 suspensions as photocatalyst. Cinosulfuron and triasulfuron have been rapidly transformed with different kinetic orders (1 and 1/2, respectively). The calculated quantum efficiencies (phi) of both Sus have been found similar (0.73%). Intermediate products were identified using HPLC-UV or HPLC-MS analyses. A photocatalytic degradation pathway has been proposed, leading to cyanuric acid as a final product. This molecule is known as resistant to all oxidation technologies. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：127 / 137
页数：11
相关论文
共 42 条
  • [21] MAILLARDDUPUY C, 1994, NEW J CHEM, V18, P941
  • [22] Photocatalytic degradation of pesticide-acaricide formetanate in aqueous suspension of TiO2
    Marinas, A
    Guillard, C
    Marinas, JM
    Fernández-Alba, A
    Aguëra, A
    Herrmann, JM
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2001, 34 (03) : 241 - 252
  • [23] Photocatalytic transformation of sulfonylurea herbicides over irradiated titanium dioxide particles
    Maurino, V
    Minero, C
    Pelizzetti, E
    Vincenti, M
    [J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 1999, 151 (1-2) : 329 - 338
  • [24] Heterogeneous photocatalytic transformations of s-triazine derivatives
    Minero, C
    Maurino, V
    Pelizzetti, E
    [J]. RESEARCH ON CHEMICAL INTERMEDIATES, 1997, 23 (04) : 291 - 310
  • [25] Ollis D.F., 1993, PHOTOCATALYTIC PURIF
  • [26] PHOTOCATALYTIC DEGRADATION OF ATRAZINE AND OTHER S-TRIAZINE HERBICIDES
    PELIZZETTI, E
    MAURINO, V
    MINERO, C
    CARLIN, V
    PRAMAURO, E
    ZERBINATI, O
    TOSATO, ML
    [J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1990, 24 (10) : 1559 - 1565
  • [27] PICHAT P, 1981, NOUV J CHIM, V5, P627
  • [28] PHOTOCATALYTIC DEGRADATION OF MONURON IN AQUEOUS TIO2 DISPERSIONS
    PRAMAURO, E
    VINCENTI, M
    AUGUGLIARO, V
    PALMISANO, L
    [J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1993, 27 (09) : 1790 - 1795
  • [29] Pusino A, 1999, PESTIC SCI, V55, P479, DOI 10.1002/(SICI)1096-9063(199904)55:4&lt
  • [30] 479::AID-PS934&gt
12345