Zn2+-La3+Co-doped TiO2 photocatalyst for the purification of air
The Zn2+-La3+Co-doped TiO2 photocatalysts prepared by doping lanthanum ion and zinc ion into TiO2 structure in a sol-gel process were shown to be efficient photocatalyst for the purification of Indoor air.The catalyst samples were then characterized by XRD and UV-vis analyses. The analytical results demonstrated that the lanthanum-zinc co-doping could inhibit the phase transformation of TiO2 and enhance the thermal stability of TiO2 structure. In addition, it was found that the lanthanum-zinc co-doping could reduce the crystallite size and increase the Ti3+ content on the surface of the catalysts with the increase of lanthanum doping. Their high photocatalytiy efficiency was due to the mechanisms for the enhancement of the activity of the Zn2+-La3+Co-doped photocatalysts might be attributed to both the improvement of the adsorption of organic substrate and the separation of electron-hole pairs.
purification photocatalysts formaldehyde
LIU Baojiang CHENG Xubang HE Jinxin
College of Chemistry,Chemical Engineering and Biotechnology Donghua University Shanghai China
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）