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Growth of TiO2 Nanotube Arrays using Porous Anodic Alumina Templates

Published online by Cambridge University Press:  26 November 2013

A. Shoja ,
A. Nourmohammadi  and
M. H. Feiz
A. Shoja
Affiliation:
Department of Physics, Faculty of Science, University of Isfahan, 81746-73441, Isfahan, Iran
A. Nourmohammadi*
Affiliation:
Department of Nanotechnology, Faculty of Advanced Science and Technologies, University of Isfahan, 81746-73441, Isfahan, Iran
M. H. Feiz
Affiliation:
Department of Physics, Faculty of Science, University of Isfahan, 81746-73441, Isfahan, Iran
*
*Email: [email protected] Phone: +98-311-7932408 Fax: +98-311-7934800
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Abstract

The aim of this research study is to produce high quality TiO2 nanotube arrays. It is shown that sol-gel electrophoresis is a suitable one to obtain vast-area TiO2 nanotube arrays when nanoporous alumina templates are used. To fabricate TiO2 nanotube arrays, alumina templates were produced via a two-step anodizing by a homemade anodizing cell using high purity phosphoric acid as the electrolyte with aluminum and platinum as electrodes. The semiconductor behavior of these templates can also be employed when producing conducting substrates for the grown TiO2 nanotubes. Stabilized titanium sol was prepared by modified hydrolysis of the titanium precursor using acetic acid. In order to produce TiO2 nanotube arrays, the template pores were filled with the precursor sol by applying a DC electric field. Then, the filled template was heat treated to crystallize the desired TiO2 phase. Scanning electron microscopy of TiO2 nanotube arrays showed that the nanotubes have been deposited in the channels of the nanoporous alumina template. X-ray diffraction data confirmed phase structure and composition of TiO2 nanotube arrays after heat treatment. To reach pure anatase phase, the samples were heated at 320°C and 400°C for two hours. To obtain pure rutile phase, the samples were heated at 320°C and 750°C for two hours.

Keywords

semiconductingnanostructureelectrodeposition
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1601: Symposium R – Photocatalysis , 2014 , jsapmrs-13-1601
Copyright
Copyright © Materials Research Society 2013 

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References

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