A chemical etching route to controllable fabrication of TiO<sub>2</sub> hollow nanospheres for enhancing their photocatalytic activity

doi:10.1007/s11705-013-1319-4

Frontiers of Chemical Science and Engineering

2013, Vol. 7

Issue (2): 192-201 https://doi.org/10.1007/s11705-013-1319-4

RESEARCH ARTICLE

本期目录

A chemical etching route to controllable fabrication of TiO₂ hollow nanospheres for enhancing their photocatalytic activity

Weixin ZHANG^1,2(

), Jie XING^1,2, Zeheng YANG^1,2, Mei KONG^1,2, Hongxu YAO^1,2

1. School of Chemical Engineering, Hefei University of Technology, Anhui 230009, China; 2. Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Anhui 230009, China

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Abstract：

The TiO₂ hollow nanospheres with diameters of about 230 nm were prepared by a simple and controllable route based on hydrolysis of Ti(OBu)₄ on the surfaces of the Cu₂O solid nanospheres followed by inward etching of the Cu₂O nanospheres. The as-prepared samples were characterized by X-ray diffraction, transmission electron microscopy and scanning electron microscopy. The further post-heat treatment led to the high crystallization of the TiO₂ hollow nanospheres. The photocatalytic performances of these samples were evaluated for the photodegradation of rhodamine B (RhB) under UV-light irradiation. The as-prepared TiO₂ hollow nanospheres showed higher photocatalytic activity than the CuO and the CuO/TiO₂ hollow nanospheres. Effects of temperature and time for post-heat treatment of TiO₂ as well as initial RhB concentrations on the RhB photodegradation have also been studied. The results show that the TiO₂ hollow nanospheres have the good reusability as photocatalysts and are promising in waste water treatment.

Key words： TiO₂ hollow nanospheres rhodamine B photocatalytic activity

收稿日期: 2012-10-26 出版日期: 2013-06-05

Corresponding Author(s): ZHANG Weixin,Email:wxzhang@hfut.edu.cn

引用本文:

. A chemical etching route to controllable fabrication of TiO₂ hollow nanospheres for enhancing their photocatalytic activity[J]. Frontiers of Chemical Science and Engineering, 2013, 7(2): 192-201.
Weixin ZHANG, Jie XING, Zeheng YANG, Mei KONG, Hongxu YAO. A chemical etching route to controllable fabrication of TiO₂ hollow nanospheres for enhancing their photocatalytic activity. Front Chem Sci Eng, 2013, 7(2): 192-201.

链接本文:

https://academic.hep.com.cn/fcse/CN/10.1007/s11705-013-1319-4
https://academic.hep.com.cn/fcse/CN/Y2013/V7/I2/192

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