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Materials (Basel). 2018 Jun 12;11(6). pii: E995. doi: 10.3390/ma11060995.

Synthesis of Various TiO₂ Micro-/Nano-Structures and Their Photocatalytic Performance.

Author information

1
Faculty of Mechanical & Material Engineering, Huaiyin Institute of Technology, Huaian 223003, China. deng_anquan@163.com.
2
College of Material Science and Engineering, Nanjing Tech University, Nanjing 21009, China. deng_anquan@163.com.
3
Faculty of Mechanical & Material Engineering, Huaiyin Institute of Technology, Huaian 223003, China. hyit2014@163.com.
4
Faculty of Mechanical & Material Engineering, Huaiyin Institute of Technology, Huaian 223003, China. guoxin@hyit.edu.cn.
5
Faculty of Mathematics and Physics, Huaiyin Institute of Technology, Huaian 223003, China. leizhou@hyit.edu.cn.
6
Jiangsu Engineering Laboratory for Lake Environment Remote Sensing Technologies, Faculty of Electronic Information Engineering, Huaiyin Institute of Technology, Huaian 223003, China. jiangqingsong05@hyit.edu.cn.

Abstract

TiO₂ micro-/nano-structures with different morphologies have been successfully synthesized via a hydrothermal method. The effects of the solvents on the morphology and structure of the obtained products have been studied. The objective of the present paper is to compare the photocatalytic properties of the obtained TiO₂ products. During the synthesis process, the tetrabutyl titanate and titanium (IV) fluoride were used as the titanium source. The obtained micro-/nano-structures were characterized by field-emission scanning electron microscopy, X-ray diffraction analysis, and nitrogen adsorption-desorption isotherms. The photocatalytic activity of the samples was evaluated by the degradation of Rhodamine B solution under simulated solar irradiation. It is found that the morphologies and structures of TiO₂ have a great influence on its photocatalytic activity. Compared with other samples, TiO₂ flower clusters assembled with nanorods exhibited a superior photocatalytic activity in the degradation of Rhodamine B.

KEYWORDS:

TiO2; different morphologies; formation mechanisms; photocatalytic activity

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