β-环糊精/TiO_2复合光催化剂制备及光催化性能探讨  

Preparation and Photocatalytic Performance of β-cyclodextrin/TiO_2 Complex Catalyst

作　　者：余国贤[1] 张晓慧[1] 晋梅[1] 路平[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）》2011年第2期27-30,46,共5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：研究用硅烷偶联剂KH560做交联剂,以β-环糊精(β-CD)对TiO2固体表面进行改性,制备β-CD/TiO2复合材料.通过钛含量测定、红外和热重分析对β-CD/TiO2复合材料进行了表征.以甲基橙溶液为研究对象,分别考察了β-CD/TiO2复合材料和纯TiO2对甲基橙的光催化降解能力.结果表明:制得的β-CD/TiO2复合材料中TiO2含量占75%,在高压汞灯下直接照射3.5 h,β-CD/TiO2对甲基橙的光催化脱色率达90%,是纯TiO2对甲基橙的光催化脱色率的1.7倍.β-cyclodextrin/TiO2（β-CD/TiO2） complex catalyst was prepared via surface modification of TiO2 with β-cyclodextrin using silane coupling agent as the cross-linking agent.The structure and properties of β-CD/TiO2 was characterized by gravimetric analysis in determination of titanium content,fourier transform infrared spectrophotometry（FT-IR） and differential thermal analyzer（DTA）.The photocatalytic performances of β-cyclodextrin/TiO2 and TiO2 were investigated by using methyl orange solution as objcet,respectively.The characterization results showed the content of TiO2 in β-CD/TiO2 complex sample was 75%.The photocatalytic performance results demonstrated β-CD/TiO2 complex catalyst could give the decoloration rate to methyl orange solution of 90% under the high pressure mercury lamp for 3.5 h,which is 1.7 times larger than that of TiO2.

关 键 词：Β-环糊精 TIO2 甲基橙 光催化脱色 

分 类 号：X703[环境科学与工程—环境工程] O643.36[理学—物理化学]