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Preparation and photocatalytic characteristics of core-shell structure TiO2/BaFe12O19 nanoparticles

被引：59
作者：
Fu, Wuyou
Yang, Haibin [1 ]
Li, Minghua
Chang, Lianxia
Yu, Qingjiang
Xu, Jing
Zou, Guangtian
机构：
[1] Jilin Univ, Natl Lab Superhard Mat, Changchun 130012, Peoples R China
[2] Henan Polytech Univ, Jiaozuo 454000, Peoples R China
[3] Jilin Univ, Stomatol Hosp, Changchun 130041, Peoples R China
来源：
MATERIALS LETTERS | 2006年 / 60卷 / 21-22期
关键词：
core-shell; TiO2BaFe12O19; sol-gel; magnetic photocatalyst; nanoparticles;
D O I：
10.1016/j.matlet.2006.01.078
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A core-shell structure TiO2/BaFe12O19 composite nanoparticles that can photodegrade organic pollutants in the dispersion system effectively and can be recycled easily by a magnetic field is reported in this paper. The obtained samples were characterized by energy dispersive X-ray spectroscopy (SEM-EDS), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The TiO2/BaFe12O19 magnetic photocatalyst is composed of two parts: (1) TiO2 shell used for photocatalysis and (2) BaFe12O19 core for separation by the magnetic field. The photocatalytic activity of the as-prepared magnetic photocatalyst increased with increasing the thickness of TiO2 coating layer. On the other hand, the saturation magnetizations of titanic-coated BaFe,20,9 nanoparticles decreased with increasing thickness of the titania coating, while the coercivity does not show any change after coating. (c) 2006 Elsevier B.V All rights reserved.
引用
收藏
页码：2723 / 2727
页数：5
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