Li-Ce共掺杂TiO_(2)纳米材料制备及光催化性能的研究  

Preparation and Photocatalytic Properties of Li-Ce Co-doped TiO_(2)Nanomaterials

作　　者：李媛[1] 张家豪 王月[1] LI Yuan;ZHANG Jiahao;WANG Yue(College of Physical Science and Technology,Bohai University,Jinzhou Liaoning 121013,China)

机构地区：[1]渤海大学物理科学与技术学院,辽宁锦州121013

出　　处：《当代化工》2024年第10期2419-2422,共4页Contemporary Chemical Industry

基　　金：辽宁省教育厅一般项目(项目编号:LJKMZ20221493、JYTMS20231624);渤海大学校级一般培育科研项目(项目编号:0524xn044)。

摘　　要：选用六水合硝酸铈(Ce(NO_(3))_(3)·6H_(2)O)为掺杂剂,以钛酸四丁酯(TBOT)为原料,采用溶胶-凝胶法制备出铈掺杂改性的TiO_(2)光催化剂,并利用XRD、SEM、Uv-vis等表征方法研究Ce/TiO_(2)催化剂的结构、形貌和其对亚甲基蓝的光催化降解性能。结果表明:在500℃退火2 h,Ti与Ce物质的量比为1∶0.01(TiO_(2):0.01Ce)时,样品光催化效率最高,对亚甲基蓝降解率可达93.8%。同时还对TiO_(2):0.01Ce进行Li共掺改良,其光降解率可达95.4%,大于相同条件下单掺杂Ce的光降解率。The co-doped TiO_(2)photocatalyst was prepared by sol-gel method with Ti(OBu)4 as raw material,(Ce(NO_(3))_(3)·6H_(2)O)as doping agent.The structure,morphology and photocatalytic degradation properties of Ce/TiO_(2)catalysts were investigated by XRD,SEM and Uv-vis.The results showed that when the sample was annealed at 500℃for 2 h,the molar ratio of Ti to Ce was 1∶0.01(TiO_(2):0.01Ce),and the degradation rate of methylene blue was up to 93.8%.At the same time,TiO_(2):0.01Ce was modified by Li co-doping,and its photodegradation rate was 95.4%,which was higher than the photodegradation rate of single-doped Ce under the same conditions.

关 键 词：溶胶-凝胶法 TiO_(2) 光催化 共掺杂 亚甲基蓝 

分 类 号：TQ115[化学工程—无机化工] O484.4[理学—固体物理]