玻璃负载TiO_2膜光催化降解2,4-二氯苯酚  

Photocatalytic Degradation of 2,4-Dichlorophenol by TiO_2/glass Film

作　　者：李景印[1] 郭玉凤[2] 张亚通[1] 王继芝[1] 

机构地区：[1]河北科技大学理学院,石家庄050018 [2]河北科技大学环境学院

出　　处：《应用化学》2002年第5期494-496,共3页Chinese Journal of Applied Chemistry

基　　金：河北省教育厅科研计划资助项目 (2 0 0 0 2 2 0 )

摘　　要：TiO 2/glass film photocatalysts have been prepared by a sol gel method with titanium tetrabutoxide as precursor, and used in photocatalytic degradation of 2,4 dichlorophenol(DCP) in aqueous solution. The experiments indicated that the TiO 2/glass film coated with five layers of TiO 2 sol in the case of higher pH value(≥10) or lower pH value(≤2) showed a higher catalytic activity, and the relationship between initial DCP concentration( c 0) and reaction rate( r 0) follows Langmuir Hinshelwood equation. The photocatalytic degradation kinetics of DCP( c 0≤0 5 mmol/L) is of first order kinetics.TiO 2/glass film photocatalysts have been prepared by a sol gel method with titanium tetrabutoxide as precursor, and used in photocatalytic degradation of 2,4 dichlorophenol(DCP) in aqueous solution. The experiments indicated that the TiO 2/glass film coated with five layers of TiO 2 sol in the case of higher pH value(≥10) or lower pH value(≤2) showed a higher catalytic activity, and the relationship between initial DCP concentration( c 0) and reaction rate( r 0) follows Langmuir Hinshelwood equation. The photocatalytic degradation kinetics of DCP( c 0≤0 5 mmol/L) is of first order kinetics.

关 键 词：玻璃负载TiO2膜 光催化降解 二氯苯酚 

分 类 号：O643[理学—物理化学]