β-CD对不同光源/TiO_2光催化效率的影响  

Effect of TiO_2 Photocatalytic Efficiency by β-Cyclodextrin Under UV and High Pressure Mercury Lamp Illumination

作　　者：路平[1] 张晓慧[1] 王敏娟[1] 

机构地区：[1]江汉大学化学与环境工程学院,湖北武汉430056

出　　处：《江汉大学学报（自然科学版）》2004年第3期36-38,共3页Journal of Jianghan University：Natural Science Edition

基　　金：湖北省自然科学基金资助项目 (2003ABA090)

摘　　要：以染料橙黄Ⅱ和甲基橙为对象,采用对比实验的方法,研究了不同光源照射下 -环糊精( -CD)对光催化降解染料的脱色速率.结果表明:在紫外灯照射下,-CD的加入使TiO2对橙黄Ⅱ和甲基橙的光催化脱色速率分别降低51.35%和43.52%;在高压汞灯照射下,-CD的加入使TiO2对橙黄Ⅱ和甲基橙的光催化脱色速率分别提高22.3和70.4倍.Dye Orange II and Methyl Orange were used as objects to investigate the rates of TiO2 photocatalytic dye decolourization in the presence of -cyclodextrin ( -CD) under UV and high pressure mercury lamp illumination. The experiment results showed that decolourization rates of the dye by TiO2 were reduced by adding the -CD under UV irradiation. Decrease of decolour- ization rates of the Orange II and Methyl Orange were 51.35% and 43.52%. But increase of decol- ourization rates of the Orange II and Methyl Orange were 22.3 and 70.4 times by adding the -CD under high pressure mercury lamp illumination.

关 键 词：Β-环糊精 TIO2 橙黄Ⅱ 甲基橙 

分 类 号：O643.36[理学—物理化学] TQ031.7[理学—化学]