可见光照射下卤离子对TiO_2/沸石光降解酸性桃红的影响  

Effects of Halogen Ions on TiO_2/Zeolite Ray Degradation Acid Pink under the Condition of Visible Light

作　　者：刘丽娜[1] 李静谊[1] 斯琴高娃[1] 苏优乐玛[1] 

机构地区：[1]内蒙古大学化学化工学院,内蒙古呼和浩特010021

出　　处：《内蒙古石油化工》2008年第11期1-4,共4页Inner Mongolia Petrochemical Industry

基　　金：国家自然科学基金(20567002);内蒙古大学博士科研启动基金;内蒙古教育厅项目(NJ04093);教育部春晖计划(Z2004-2-15030);内蒙古大学"513人才计划"的资助

摘　　要：本文考察了3种卤素离子对TiO2/沸石以及P25光催化降解酸性桃红的影响,实验结果表明:加入卤素离子F-、Cl-和I-均减慢了酸性桃红光脱色反应的速率,并且COD去除率也逐渐降低;加入卤素离子对TiO2/沸石催化剂脱色反应速率的影响较P25小,而且TiO2/沸石催化剂更加易于从分散体系中分离出来,说明它是一个有应用前途的催化剂。另外,进行了H2O2测定和DMPO自旋捕获自由基的ESR光谱测定。The effect of three halogen ions on the photodegradation of SRB on TiO2/zeolite and P25 was investigated. The experimental results showed that the addition of F-,Cl- and I- decreased the decol- ored rate of SRB and the rate of COD change of SRB. The effect halogen ions on the photodegradation of SRB on TiO2/zeolite was smaller than that on P25. TiO2/zeolite was easier to be separated from aqueous suspensions. This phenomenon showed that TiO2/zeolite was an applicable catalyst. The detections of H2O2 and electron paramagnetic resonance （EPR） spectra were made.

关 键 词：卤素离子 TiO2/沸石 光催化 

分 类 号：O643.36[理学—物理化学] O614.121[理学—化学]