低温燃烧法制备Ce-TiO_2光催化材料与性能研究  

Preparation and Performance of Ce-TiO_2 Photocatalytic Materials with LCS Method

作　　者：梁愿[1] 桂允陆[1] 刘奎仁[1] 陈建设[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《中国稀土学报》2012年第3期284-288,共5页Journal of the Chinese Society of Rare Earths

基　　金：国家科技部"863"计划项目(2012AA030614)资助

摘　　要：以硫酸钛为原料,采用低温燃烧法制备Ce掺杂TiO2光催化材料,借助SEM,XRD对样品进行表征。以粉体晶粒粒径和晶型组成为指标确定Ce最佳掺杂浓度为0.3%(摩尔分数)。选取10 mg.L-1的罗丹明B溶液,粉体添加量为1 g.L-1,高压汞灯照射下光催化降解3 h,罗丹明B的降解率为49.15%。选取光照时间1 h,粉体添加量10 mg,菌液浓度103 cfu.ml-1,普通日光灯为光源,检测产品的杀菌率为34.90%,Ce-TiO2粉体的催化活性明显优于纯TiO2。The low-cost titanium sulfate was adopted to prepare Ce-TiO2 photocatalytic materials by low-temperature combustion synthesis.the best doped amount of Ce was 0.3%（mole fraction）.The scanning electron microscope and X-ray diffraction were used to characterize the prepared Ce-TiO2 powders.The degeneration rate of Rhodamine B was 49.15% under the conditions by adding 1 g · L-1 Ce-TiO2 powders into the 10 mg · L-1 Rhodamine B solution and illuminated by mercury lamp for 3 h.The conditions of antibacterial test were： illumination time 1 h,adding powder 10 mg,the concentration of bacteria 103 cfu · ml-1 and fluorescent light.The sterilization rate of the Ce-TiO2 powder under the best preparation condition was 34.90%,Comparing to pure TiO2,Ce doping significantly increased the photocatalytic activity.

关 键 词：低温燃烧法 TIO2 稀土掺杂 光催化 抗菌性能 

分 类 号：X592[环境科学与工程—环境工程] TQ426.62[化学工程]