TiO_2-Cu_2O复合膜的制备及其可见光催化降解染料性能研究  

Preparation of TiO_2-Cu_2O film and research on the degradation of dye under solar light

作　　者：张永刚[1] 罗永松[1] 马丽丽[1] 李晓勤[1] 李家麟[1] 余颖[1] 

机构地区：[1]华中师范大学纳米科技研究院,武汉430079

出　　处：《化工新型材料》2007年第3期48-50,共3页New Chemical Materials

基　　金：国家自然科学基金资助项目(编号:20207002;90510012)

摘　　要：采用电化学方法制备了TiO2-Cu2O纳米复合材料,并用喷涂法在玻璃表面制成TiO2-Cu2O复合膜。通过X射线衍射(XRD)、扫描电镜(SEM)等手段对TiO2-Cu2O复合材料进行了表征,用正交设计法研究了TiO2-Cu2O复合膜与Fe2++EDTA构成的Fenton试剂在可见光照射下催化降解亚甲基兰的性能,并用实验证实了H2O2存在。结果显示,TiO2-Cu2O复合膜光催化降解性能明显优于TiO2膜和Cu2O膜。与传统Fenton试剂相比,TiO2-Cu2O复合膜与Fe2++EDTA构成的Fenton试剂体系有效作用时间更长,并可重复使用。TiO2-Cu2O nanocomposite was prepared by a novel electrochemical method and sprayed on glass matrix. It was characterized by X-ray diffraction （XRD） and scanning electron microscopy （SEM）. The degradation effect on methylene blue of TiO2-Cu2O film under visible light was investigated by orthogonal array design as well. The results showed that during the degradation process, TiO2-Cu2 O film generated H2O2 which is from Fenton regent with Fe^2＋ and EDTA. The degradation effect of TiO2-Cu2O film was higher than that for the system of （TiO2 film ＋Fe^2＋ ＋EDTA） and （Cu2O film＋Fe^2＋ ＋EDTA）. Compared to the conventional Fenton reagent, this system can act effectively for a longer time and be recycled for several times.

关 键 词：TiO2-Cu2O 光催化 染料 

分 类 号：X791[环境科学与工程—环境工程]