Photocatalytic degradation of imidazolinone fungicide in TiO2-coated optical fiber reactor
Photocatalytic degradation of imidazolinone fungicide in TiO2-coated optical fiber reactor
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DOI：
10.1016/j.apcatb.2005.08.008
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发表时间：
2006-02
影响因子：
22.1
通讯作者：
A. Danion;J. Disdier;C. Guillard;O. Paisse;N. Jaffrezic‐Renault
中科院分区：
文献类型：
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作者：
A. Danion;J. Disdier;C. Guillard;O. Paisse;N. Jaffrezic‐Renault
在光纤光催化反应器中研究了杀菌剂灭草酮的光催化降解。芬那米酮缓慢转化，动力学级数为1，降解速率为0.02h−1。通过固相萃取（SPE）结合液相色谱-质谱技术（LC-MS）分离和鉴定中间产物。提出了一种可能的降解途径，主要涉及羟基化和氧化反应。还鉴定了在粉末反应器中由相同反应产生的羧酸和硫酸根离子。
The photocatalytic degradation of the fungicide fenamidone is studied in a TiO2-coated optical fiber photoreactor. Fenamidone is slowly transformed with a kinetic order of 1 and a degradation rate of 0.02h−1. Intermediate products were isolated and identified by means of solid phase extraction (SPE) coupled to liquid chromatography-mass spectrometry techniques (LC-MS). A proposed degradation pathway of fenamidone is presented, involving mainly hydroxylation and oxidation reactions. Carboxylic acids and sulfate ions resulting from the same reaction in a powder reactor were also identified.