Growth of TiO 2 Nanotube Arrays using Porous Anodic Alumina Templates
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Erratum Growth of TiO2 Nanotube Arrays using Porous Anodic Alumina Templates – ERRATUM A. Shoja, A. Nourmohammadi, and M.H. Feiz doi: 10.1557/opl.2013.1148, Published by Materials Research Society, 26 November 2013. The article by Shoja et al. was published with the incorrect volume number. The correct volume number is Volume 1601. The Materials Research Society and Cambridge University Press apologize to the authors for this error. The correct version of the article follows this notice.
Reference A. Shoja, A. Nourmohammadi and M. H. Feiz (2013). Growth of TiO2 Nanotube Arrays using Porous Anodic Alumina Templates. MRS Online Proceedings Library, 1601, jsapmrs13-1601-6454 doi:10.1557/opl.2013.1148.
Mater. Res. Soc. Symp. Proc. Vol. 1601 © 2013 Materials Research Society DOI: 10.1557/opl.2013 .1148
Growth of TiO2 Nanotube Arrays using Porous Anodic Alumina Templates A. Shoja1, A. Nourmohammadi2*, M. H. Feiz1 1
Department of Physics, Faculty of Science, University of Isfahan, 81746-73441, Isfahan, Iran Department of Nanotechnology, Faculty of Advanced Science and Technologies, University of Isfahan, 81746-73441, Isfahan, Iran *Email: [email protected] Phone: +98-311-7932408 Fax: +98-311-7934800 2
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. INTRODUCTION The capability of a TiO2 nanostructure depends on its charge transfer efficiency, its surface area (i.e., m2/g) and solar energy absorption. All these specifications are related to the geometry of the nanostructure. Synthesis of one-dimensional nanostructures such as nanotubes and nanorods is desirable because of their supreme charge transfer efficiency. The advantage of producing TiO2 nanotubes is their higher surface area which can guarantee higher surface activity. An ordered TiO2 nan
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