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.
出处
《有色金属（冶炼部分）》
CAS
北大核心
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)
关键词
二氧化钛
光催化
GD
掺杂
氢
Titanium dioxide
Photocatalysis
Gd
Doping
Hydrogen
