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Effect of voltage on TiO2 nanotubes formation in ethylene glycol solution


Citation

Ismail, Syahriza and Nor Hisham, Nurul Asyikin Ahmad and Mamat, Md Shuhazlly and Azam, Mohd Asyadi (2017) Effect of voltage on TiO2 nanotubes formation in ethylene glycol solution. Jurnal Teknologi: Sciences & Engineering, 79 (5-2). 117 - 120. ISSN 0127-9696; ESSN: 2180-3722

Abstract

The crystalline phase of the TiO2nanotubes without further heat treatment were studied. The TiO2nanotube arrays were produced by anodization of Ti foil at three different voltage; 10, 40, and 60 Vin a bath with electrolytes composed of ethylene glycol (EG), ammonium fluoride (NH4F), and hydrogen peroxide (H2O2). The H2O2is a strong oxidizing agent which was used as oxygen provider to increase the oxidation rate for synthesizing highly ordered and smooth TiO2nanotubes. Anodization at voltage greater than 10 V leads to the formation of tubular structure where higher anodization voltage (~ 60V) yield to larger tube diameter (~ 180 nm). Crystallinity of the nanotubes is improved as the voltage was increased. The transformation of amorphous to anatase can be obtained for as anodized TiO2without any heat treatment. The Raman spectra results show the anodization at 40 V and 60 V gives anatase peak in which confirms the crystalline phase. The stabilization of the crystalline phase is due to the oxygen vacancies and ionic mobilities during the anodization at high voltage.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
DOI Number: https://doi.org/10.11113/jt.v79.11294
Publisher: Penerbit Universiti Teknologi Malaysia
Keywords: TiO2nanotubes; Anodization; Crystallization; Anatase
Depositing User: Ms. Ainur Aqidah Hamzah
Date Deposited: 24 May 2022 02:28
Last Modified: 24 May 2022 02:28
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.11113/jt.v79.11294
URI: http://psasir.upm.edu.my/id/eprint/61615
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