天然沸石负载TiO_2光催化降解敌敌畏和对硫磷  

Photocatalytic degradation of dichlorvos and parathion with titanium dioxide supported on natural zeolite

作　　者：周波[1] 鲍长利[1] 冯志兵[1] 蒋引珊[2] 方送生 

机构地区：[1]吉林大学化学学院,长春130026 [2]吉林大学材料科学与工程学院,长春130026

出　　处：《环境污染治理技术与设备》2004年第6期33-35,共3页Techniques and Equipment for Environmental Pollution Control

基　　金：国家自然科学基金资助项目 ( 4 0 172 0 2 0 )

摘　　要：以钛酸丁酯为原料 ,以天然沸石作载体负载TiO2 制备光催化剂 ;并采用高压汞灯为光源 ,用负载型TiO2 光催化降解敌敌畏和对硫磷。结果表明 ,浓度为 1 2× 1 0 -4mol/L的农药光照 2h左右可完全被光催化氧化为PO3 -4。同时 ,还研究了合成光催化剂的处理温度、溶液的初始pH值、过氧化氢浓度等对负载TiO2Using tetrabutyl titanate as raw material,titanium dioxide photocatalyst supported on natural zeolite were prepared. The high pressure mercury lamp was used as light,the photocatalytic degradation of dichlorvos and parathion by this supported titanium dioxide was studied. The result indicated that pesticide at concentration of 1 2×10 -4 mol/L could be absolutely photocatalytic oxidated to PO 3- 4for about 2 hours. At the same time, the effects of some parameters on the photocatalytic activity, such as the different temperature of photocatalyst, the amount of TiO 2, the initial pH of the solution and the concentration of H 2O 2 were studied.

关 键 词：天然沸石 TIO2 光催化降解工艺 敌敌畏 对硫磷 农药 污染物 

分 类 号：X786.03[环境科学与工程—环境工程]