Effect of ZnFe2O4 doping on the photocatalytic activity of TiO2

被引：71

作者：

Liu, GG ^{[1
]}

Zhang, XZ ^{[1
]}

Xu, YJ ^{[1
]}

Niu, XS ^{[1
]}

Zheng, LQ ^{[1
]}

Ding, XJ ^{[1
]}

机构：

[1] Henan Normal Univ, Coll Chem & Environm Sci, Key Lab Environm Sci & Technol High Educ Henan Pr, Xinxiang 453002, Peoples R China

来源：

CHEMOSPHERE | 2004年 / 55卷 / 09期

关键词：

TiO2; ZnFe2O4; doping; photocatalysis; Rhodamine B;

D O I：

10.1016/j.chemosphere.2004.01.035

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The photocatalytic oxidation of the organic pollutants with the TiO2 as photocatalyst has been widely studied in the world, and many achievements have been got. The degradation of pollutants is highly related with the photocatalytic activity Of TiO2. It is demonstrated that doping ions or oxides to TiO2 is one way to enhance the photocatalytic activity of TiO2. In this paper, the ZnFe2O4-doped TiO2 nanoparticles were prepared from butyl titanate by a sol-gel method and characterized by means of X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results showed that when TiO2 was doped with ZnFe2O4, its particle size will decrease and its crystal structure will partly transform from anatase to rutile. The photocatalytic activity of the elaborated powders was studied following the degradation of Rhodamine B. The results showed that doping ZnFe2O4 to TiO2 will enhance the photocatalytic activity of TiO2, and that ZnFe2O4-doped TiO2 in the coexistence of anatase and rutile has higher efficiency for the degradation of Rhodamine B than that in the anatase phase alone. Also the different role of O-2 in the direct photolysis and photocatalysis of Rhodamine B was discussed. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1287 / 1291

页数：5

共 10 条

[1] Characterisation and activity of sol-gel-prepared TiO2 photocatalysts modified with Ca, Sr or Ba ion additives [J].