离子液体制备碳氮硫共掺杂TiO_2及其光催化性能的研究  

Study on the Photocatalytic Performance of C-N-S-codoped TiO_2 Prepared by Ionic Liquid

作　　者：陈久福[1,2] 钟俊波[1,2] 李建章[1,2] 程朝柱 窦琳[1,2] 

机构地区：[1]绿色催化四川省高校重点实验室,四川自贡643000 [2]四川理工学院化学与制药工程学院,四川自贡643000

出　　处：《四川理工学院学报（自然科学版）》2015年第1期12-16,共5页Journal of Sichuan University of Science & Engineering(Natural Science Edition)

基　　金：绿色催化四川省高校重点实验室开放课题(LYJ14203;LZJ1301);四川理工学院研究生创新基金项目(Y2013025)

摘　　要：以1-乙基-3-甲基咪唑硫酸氢盐([EMIm]HSO4)离子液体为掺杂剂,采用溶胶-凝胶法制备碳、氮、硫共掺杂TiO2(CNS-TiO2)。用比表面孔隙仪、X射线衍射仪、扫描电镜、紫外-可见漫反射、X射线光电子能谱和表面光电压仪对制备的光催化剂进行了表征,以甲基橙为模拟污染物,在模拟太阳光照射下考察了光催化性能。结果表明:所制备的CNS-TiO2拥有更高的比表面和电荷分离速率,并对可见光有响应;CNS-TiO2的光催化活性是纯TiO2的3倍。The C-N-S-codoped Ti O2（ CNS-Ti O2） is successfully prepared by the sol-gel method with 1-ethel-3-methylimdazolium hydrosulfate（ [EMIm]HSO4） ionic liquid as dopant. The synthesized photocatalysts is characterized by surface porosity meter,X-ray diffraction,scanning electron microscope,UV-Vis diffuse reflectance spectroscopy,X-ray photoelectron spectroscopy and surface photovoltage instrument. The photocatalytic performance of the samples is investigated by utilizing decolorization methyl orange aqueous solution as the simulation pollutants under simulated solar light irradiation. The results show that the as-synthesized CNS-Ti O2 has higher BET surface area and separation rate of charge and can response to visible light. The photocatalytic performance of CNS-Ti O2 is about 3 times of that of pure Ti O2.

关 键 词：TIO2 离子液体 掺杂 光催化性能 

分 类 号：O643.36[理学—物理化学]