Photocatalytic oxidation of methomyl in the presence of semiconducting oxides

被引：18
作者：
Poulios, I. [1 ]
Kositzi, M.
Pitarakis, K.
Beltsios, S.
Oikonomou, I.
机构：
[1] Univ Thessaloniki, Dept Chem, Phys Chem Lab, Thessaloniki 54124, Greece
[2] Water Supply & Sewerage Municipal Enterprise Lari, Terma Ticherou, Larisa 41222, Greece
来源：
INTERNATIONAL JOURNAL OF ENVIRONMENT AND POLLUTION | 2006年 / 28卷 / 1-2期
关键词：
heterogeneous photocatalysis; methomyl; ZnO; TiO2; insecticide; photooxidation; solar-light induced degradation;
D O I：
10.1504/IJEP.2006.010872
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The photocatalytic degradation of methomyl, a broad spectrum carbamate insecticide, has been investigated in aqueous heterogeneous solutions containing semiconductor oxides as photocatalysts. It was observed that, in the presence of the catalysts, quantitative degradation of the organic molecule occurs after four hours of illumination. As mineralisation products, CO2 and SO42- ions have been identified, whereas the nitrogen atom forms NB4+ and NO3 ions. Various commercial catalysts were compared with respect to their overall photocatalytic efficiency, while the initial photonic efficiency (zeta) of mineralisation under various experimental conditions have been calculated.
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收藏
页码：33 / 44
页数：12
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