Influence of praseodymium and nitrogen co-doping on the photocatalytic activity of TiO2

被引：57
|
作者：
Wu, Jing [1 ]
Liu, Qingju [1 ]
Gao, Pan [1 ]
Zhu, Zhongqi [1 ]
机构：
[1] Yunnan Univ, Yunnan Key Lab Nanomat & Technol, Kunming 650091, Yunnan, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2011年 / 46卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Oxide; Chemical synthesis; Catalytic properties; MECHANISM; WATER;
D O I：
10.1016/j.materresbull.2011.07.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
TiO2 nanoparticles co-doped with different doping concentration of Pr and N were prepared by sol-gel method combined with microwave chemical method. The samples were characterized by XRD, UV-vis, TEM, XPS, PL, and the photocatalytic activity were investigated by photocatalytic degradation of methylene blue (MB). The results indicate that Pr and N ions incorporate into the lattice of TiO2, co-doping restrains the increase of grain size, broadens the absorption region to visible light, and inhibits the recombination of the photo-generated electrons and holes. Moreover, the photocatalytic activity of Pr-N-TiO2 is remarkable improved due to the synergistic effect of the co-doped ions. The degradation rate of MB in 6 h is 92.81%, which is much higher than that of Degussa P25 (45.01%). (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1997 / 2003
页数：7
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