C-Ce-TiO_2光催化剂的制备及其对氟氯氰菊酯的降解  

Prepartion of C-Ce-TiO_2 Photocatalyst and its Degradation for Cyfluthrin

作　　者：龚丽芬[1] 谢晓兰[1] 

机构地区：[1]泉州师范学院化学与生命科学学院,福建泉州362000

出　　处：《泉州师范学院学报》2013年第6期30-33,共4页Journal of Quanzhou Normal University

基　　金：泉州市优秀人才培养专项资助项目(08A22);福建省高校服务海西建设重点(A102);福建省教育厅A类科技目计划(JA07154)

摘　　要：采用溶胶-凝胶法制备碳铈共掺杂的纳米二氧化钛(C-Ce-TiO2)光催化剂,经X-射线粉末衍射(XRD)、扫描电子显微镜(SEM)和紫外-可见漫反射光谱(UV-Vis-DRS)表征,在9 W日光灯照射下,催化降解高效氟氯氰菊酯.结果表明:C-Ce-TiO2在可见光区吸光度提高,其禁带宽度比未掺杂的二氧化钛小,XRD显示制备得到的C-Ce-TiO2主要为锐钛矿晶型,光催化降解试验发现C-Ce-TiO2对高效氟氯氰菊酯的降解能力高于纳米二氧化钛,降解率可达92%左右.Photocatalyzer,doped titania with carbon and cerous （C-Ce-TiO2） was synthesized by sol-gel methods.The crystalline structure of C-Ce-TiO2 was determined by using XRD, SEM and UV-Vis- DRS. And the C-Ce-TiO2 was employed for the photocatalytic degradation of cyfluthrin under irradiation of 9W lamplight. The results indicated that the absorbency of C-Ce-TiO2 has increased in the visible light region.Its band gap value is lower than the undoped TiO2.The signal phase of XRD showed that C-Ce-TiO2 be anatase in the main. The degradation rate of eyfluthrin is 92% under photocatalysis of C-Ce-TiO2, which is better than nanometer TiO2.

关 键 词：碳铈共掺杂二氧化钛 光催化 降解 高效氟氯氰菊酯 农药 

分 类 号：X788[环境科学与工程—环境工程]