稀土离子La^(3+)修饰纳米TiO_(2-x)F_x光催化性能  

Photocatalytic properties of rare earth La^(3+) ion modified Nano-TiO_(2-x)F_x

作　　者：马晓燕[1] 张荣香[1] 李玲[1] 赵晓辉[1] 

机构地区：[1]河北大学物理科学与技术学院河北省光电信息材料重点实验室,河北保定071002

出　　处：《河北大学学报（自然科学版）》2015年第2期122-126,共5页Journal of Hebei University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(21201053);河北省教育厅重点基金资助项目(ZD 20131089)

摘　　要：以四氯化钛、硝酸镧、硫脲、氟化铵、氨水等为主要实验药品,采用常温络合-控制水解法制备具有可见光催化活性的La离子修饰纳米TiO2-xFx光触媒乳液.使用XRD、UV-Vis、纳米激光粒度分析仪等表征了样品的物相、粒径、组成、光吸收等性质.在光照下,考察了La修饰纳米TiO2-xFx光触媒乳液降解酸性红3R的光催化性能.结果表明,当La掺杂物质的量浓度为0.1%,F掺杂物质的量浓度为0.3%,体系pH值为6,回流时间为15min时,样品乳液对酸性红3R染料的降解率达到95%以上.The La ion-modified nanometer TiO2-x Fx photocatalyst emulsion with visible light photocatalytic activity was synthesized by using complexation-controlled hydrolysis at room temperature with titanium tetrachloride, lanthanum nitrate, thiourea, ammonium fluoride, ammonia as raw materials. The sample phase, particle size, composition, and light absorption properties were characterized by using XRD, UV-Vis, and Nanometer laser particle size analyzers. Under the sunlight, the photocatalytic performance of La-modified TiO2-xFx emulsion through degradating acid red 3R dye was investigated. The results showed that when the La doping concerntration was 0.1%, F doping concerntration was 0. 3 %, the pH value was 6, and reflux time was 15 rain, the degradation of acid red 3R dye was more than 95%.

关 键 词：La修饰 纳米TiO2-xFx 常温络合-控制水解 光催化 

分 类 号：TQ613.1[化学工程—精细化工]