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

被引：59

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

页码：1997 / 2003

页数：7

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