紫外光下无机离子对TiO_2/沸石光降解酸性桃红的影响  

THE EFFECT OF INORGANIC IONS ON THE PHOTODEGRADATION OF SRB ON TiO_2/ZEOLITE UNDER UV LIGHT

作　　者：李静谊[1] 白图雅[1] 马俊华[1] 王文博[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：《水处理技术》2008年第3期15-18,共4页Technology of Water Treatment

基　　金：国家自然科学基金项目(NSFC;Nos.20567002);内蒙古教育厅项目(NJ04093);教育部春晖计划(Z2004-2-15030)

摘　　要：研究了在紫外光照射下,添加无机阴离子H2PO4-、SO42-和HCO3-对TiO2/斜发沸石光催化降解酸性桃红的不同影响。结果表明,对于TiO2/斜发沸石,添加H2PO4-、SO42-和HCO3-,反应速率变小;对于P25,添加H2PO4-、SO42-和HCO3-,反应速率变大;添加这些无机阴离子对TiO2/斜发沸石和P25影响不同,可能与它们是否表面控制反应有关。同时进行了COD、H2O2和EPR测定,将它们与反应活性相关联,得出了一些有意义的结论。The effect of inorganic anions such as H2PO4^-,SO4^2- and HCO3^- on the photocatalytic degradation of SRB under UV light irradiation was studied. UV-vis spectra results showed that the reaction rate using TiO2/clinoptilolite will become slower with adding H2PO4 ,SO4^2-and HCO;. The reaction rate using P25 will become fast with adding H2PO4^-,SO4^2-and HCO3. The effect of these inorganic anions on TiO2/clinoptilolite and P25 is different. This phenomenon is related with if swrfairal contrd it was controlled by a surface reaction. COD ,H2O2 and EPR were also detected. These results were related with reaction activity and some conclusions were made.

关 键 词：紫外光照射 酸性桃红 无机阴离子 

分 类 号：TQ031.7[化学工程]