Gd^(3+)掺杂纳米TiO_2的制备及性能  

The Preparation and Performance of Nanoparticle Gd^(3+)-doped TiO_2

作　　者：李凤丽[1] 彭绍琴[1] 李越湘[1] 

机构地区：[1]南昌大学化学系,江西南昌330047

出　　处：《有色金属（冶炼部分）》2007年第3期41-42,49,共3页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家重点基础研究发展计划(973计划)资助项目(2003CB214503);江西省教育厅基金资助项目(赣教技字[2005]37号);南昌大学测试基金资助(2005016)

摘　　要：采用溶胶-凝胶浸渍法制备了纯的和Gd3+掺杂的纳米TiO2,并利用XRD、UV-Vis漫反射光谱对样品进行了表征。考察了Gd3+掺杂对TiO2催化活性的影响。结果发现Gd3+的掺入阻止了TiO2由锐钛矿相向金红石相的转变,抑制了晶粒的生长。与纯TiO2相比,Gd3+掺杂的TiO2在紫外区的光吸收能力增强,TiO2催化剂光催化分解水制氢活性提高了56%。Pure and Gd^3＋-doped TiOz nanoparticle photocatalysts were prepared by sol-gel impregnation process, and characterized by means of X--ray diffraction and UV-Vis diffuse reflectance spectra. The effects of Gd^3＋ doping on the photocalytic activity of TiO2 were investigated. The results show that the transformation from anatase to rutile and the grain growth of TiO2 was prevented by doping Gd^3＋. The absorption intensity in the region of ultraviolet light of Gd^3＋-doped TiO2 were promoted compared with pure TiO2. The activity of hydrogen generation from water 56% was increased.

关 键 词：二氧化钛 光催化 GD 掺杂 氢 

分 类 号：TF383[冶金工程—冶金机械及自动化]