| 玻璃纤维附载TiO2光催化降解有机磷农药 |
| 摘要点击 1826 全文点击 3137 投稿时间：1995-10-27 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 附载TiO2 光催化降解 有机磷农药 四异丙醇钛 |
| 英文关键词 supported TiO2 photocatalytic degradation organophosphorus pesticides titanium tetraisopropoxide |
|
| 中文摘要 |
| 研究以四异丙醇钛[Ti(iso-OC3H7)4]为原料,配制成胶体用玻璃纤维附载TiO2的过程;同时利用附载的TiO2光催化降解有机磷农药结果表明,低浓度的4种有机磷农药。375W中压汞灯短时间照射有机磷将完全被光催化氧化至PO43-;玻璃纤维上附载的TiO2不易脱落。光照120h,TiO2的光催化活性没有减弱,可以连续使用探讨了有机磷农药结构不同影响光解率的原因。 |
| 英文摘要 |
| Photocatalytic degradation of organophosphorus pesticides using supported TiO2 as a catalyst,which is prepared by thermal decomposition and calcination of colloidal solution made from hydrolytic of titanium tetraisopropoxide[Ti(isoOC3H7)]ion fiberglass was studied.The results showed that four organophosphorus pesticides of lower concentrations were completely photocatalytically degraded into PO43- within a short time illumination with a medium pressure mercury lamp of 375 W.The TiO2 supported on the fiberglass was not removed easily,after 120 h illumination there was no significant loss of the photocatalytic activity of TiO2,it could be used continually.The reasons of the different chemical structures of organophosphorus pesticides affecting photodegradation efficiency were investigated. |
