Synthesis and photocatalytic oxidation properties of titania hollow spheres

被引：28
作者：
Bala, Hari [1 ]
Yu, Yanhui [1 ]
Zhang, Yishun [1 ]
机构：
[1] Henan Polytechn Univ, Inst Mat Sci & Engn, Jiaozuo 454000, Peoples R China
来源：
MATERIALS LETTERS | 2008年 / 62卷 / 14期
关键词：
anatase TiO2; hollow spheres; photocatalyst; template;
D O I：
10.1016/j.matlet.2007.11.038
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The hollow spheres of anatase TiO2 with higher photocatalytic activity have been fabricated by spherical CaCO3 nanoparticles as a template, and titanium sulfate (Ti(SO4)(2)) as a precursor, and the CaCO3 templates were dissolved subsequently in dilute HNO3 solution. The TiO2 hollow spheres samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and N-2 adsorption-desorption isotherms. The characterization results indicate that as prepared TiO2 hollow spheres sample was transformed to anatase phase in calcined at 400 degrees C, and the anatase TiO2 hollow spheres have a higher specific surface area and show much better photocatalytic activity than commercial P25 in the photodegradation of Rhodamine B under the UV irradiation. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：2070 / 2073
页数：4
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