锐钛矿TiO_2-Ag纳米纤维的可控制备及光催化性能研究  

Controllable synthesis of TiO_2-Ag nanofibers from electrospinning for photocatalytic application

作　　者：王翠娥[1] 叶海洋[1] 刘新华[1] 张广知[1] 王琪[1] 

机构地区：[1]安徽工程大学纺织服装学院,安徽芜湖241000

出　　处：《安徽工程大学学报》2015年第4期26-30,共5页Journal of Anhui Polytechnic University

基　　金：大学生创新创业训练计划基金资助项目(C12XX05112);安徽工程大学引进人才科研启动基金资助项目(S031304001);国家自然科学基金资助项目(21302001)

摘　　要：制备TiO2高效光催化试剂近年来备受关注.利用静电纺丝技术成功获得了尺寸均一的TiO2纳米纤维,在此基础上,以硝酸银(AgNO3)为掺杂剂,合成了TiO2-Ag复合纳米纤维.采用扫描电子显微镜(SEM)及X射线衍射(XRD)对该复合材料进行了表征.结果显示,产物为锐钛矿TiO2-Ag复合纳米纤维,且纤维分散性好、长径比大.随后以亚甲基蓝为降解对象,研究了该复合材料的光催化活性,探讨了Ag掺杂量对TiO2光催化效果的影响.结果表明:TiO2-Ag复合纳米纤维具有良好的光催化活性,且掺杂0.8wt%Ag的TiO2-Ag复合纳米纤维对亚甲基蓝的降解效率最高.Great efforts have been made to prepare efficient TiO2 photocatalysts in recent years.In this work,electrospinning technology was successfully employed to make one-dimensional TiO2.Meanwhile,the TiO2 nanofibers doped with Ag nanoparticles were also fabricated based on this method.SEM and XRD are both used to characterize the hybrid nanofibers and the results show that these nanofibers are anatase TiO2-Ag nanocomposites with desirable dispersion and good length to diameter ratio.Besides,the as-obtained TiO2-Ag nanofibers exhibited excellent photocatalytic activity for the degradation of methylene blue dye.

关 键 词：光催化 静电纺丝 二氧化钛 银 

分 类 号：X703[环境科学与工程—环境工程]