Photocatalytic degradation of Monuron in aqueous titanium dioxide dispersions
Photocatalytic degradation of Monuron in aqueous titanium dioxide dispersions
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DOI：
10.1021/es00046a005
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发表时间：
1993-09
影响因子：
11.4
通讯作者：
E. Pramauro;M. Vincenti;V. Augugliaro;L. Palmisano
中科院分区：
文献类型：
--
作者：
E. Pramauro;M. Vincenti;V. Augugliaro;L. Palmisano
以TiO 2悬浮液为光催化剂，研究了灭草隆[3-（4-氯苯基）-1，1-二甲基脲]在模拟太阳光照射下的光诱导降解。除草剂（目前在ppm水平）矿化为CO 2和Cl -，而氮氧化为NO 3 -发生得更慢，通过中间形成的NH 3。污染物的初级降解遵循伪一级动力学。使用HPLC和GC-MS技术鉴定了几种反应中间体。本文还研究了这些化合物在辐照下的形成和归宿
The light-induced degradation of Monuron [3-(4-chlorophenyl)-1,1-dimethylurea] under simulated solar irradiation has been investigated in aqueous solutions containing TiO 2 suspensions as photocatalysts. The herbicide (present at ppm level) was mineralized to CO 2 and Cl - , whereas oxidation of nitrogen to NO 3 - occurs more slowly, via the intermediate formation of NH 3 . The primary degradation of the pollutant follows a pseudo-first-order kinetics. Several reaction intermediates were identified using HPLC and GC-MS techniques. The formation and fate of some of these compounds under irradiation were also investigated