Photocatalytic degradation of water contaminants using π-conjugated polymers

使用聚乙烯（3-八甲基噻吩-2，5-二基） （POTh） （POTh）对irobenfos农药进行可见光诱导的光催化降解。Addition of FeイD12+イエD1 to an aqueous solution of the pesticide and the use of the POTh film blend with sensitizers and/or radical scavengers promoted the degradation of iprobenfos。OH激进分子也对POTh薄膜和iprobenfos的降解机理进行了测试。后续的结果已获得.1. Iprobenhos （10 ppm）的一种类似的解决方案被涂上了一个测试管，该解决方案被辐射在λ>380纳米的不同氧气压力下。活动oxygen species （02·イイD1-イイD1 ￣ HイD22 ￣ OH） was elucidated.3。The acceleration of the degradation by FeイD12+イエD1 addition was for the increase in the concentration of the OH radical formed via the photo-Fenton reaction.3。降低率的增强和电影的稳定性是由混合的perylene （敏感器）和N，N，N'，N'-四ramethylbenzidine（cation scavenger）与POTh电影一起完成的。结果可以解释由能量转移和/或电子转移（每 *）到POTh.4。被建议对苯环和iprobenfos的侧面群体的OH激进分子攻击的退化路径。

Visible light-induced photocatalytic degradation of iprobenfos pesticide using poly(3-octylthiophene-2,5-diyl) (POTh) film was studied. Addition of FeィイD12+ィエD1 to an aqueous solution of the pesticide and the use of the POTh film blend with sensitizers and/or radical scavengers promoted the degradation of iprobenfos. Active oxygen species formed on the POTh film and degradation mechanism of iprobenfos by the OH radical was also examined. Following results were obtained.1. An aqueous solution of Iprobenhos (10 ppm) was put into a test tube coated with POTh and the solution was irradiated under light of λ>380 nm by varying oxygen pressure of bubbling gas.2. The formation process of the active oxygen species (02・ィイD1-ィエD1 → HィイD22ィエD20ィイD22ィエD2 → OH) was elucidated.3. The acceleration of the degradation by FeィイD12+ィエD1 addition was explained by the increase in the concentration of the OH radical formed via the photo-Fenton reaction.3. Enhancement of the degradation rate and the stabilization of the film was accomplished by blending perylene (sensitizer) and N,N,N',N'-tetramethylbenzidine (cation scavenger) with the POTh film. The result can be explained by energy transfer and/or electron transfer from excited perylene (Per*) to POTh.4. The degradation path which the OH radical attacks on the benzene ring and the side group of iprobenfos was suggested.