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Fabrication of highly ordered TiO2 Nanotubes from Fluoride containing Aqueous Electrolyte by Anodic Oxidation and their Photoelectrochemical response.

The fabrication of TiO2 nanotubes (TNT) was carried out by electrochemical anodization of Ti in aqueous electrolyte containing NH4F. The effect of electrolyte pH, applied voltage, fluoride concentration and anodization duration on the formation of TNT was investigated. It was observed that self-orga...

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Main Authors: Lim, Ying Chin, Zainal, Zulkarnain, Hussein, Zainal, Tan, Wee Tee
Format: Article
Language:English
English
Published: American Scientific Publishers 2011
Online Access:http://psasir.upm.edu.my/id/eprint/25215/1/Fabrication%20of%20highly%20ordered%20TiO2%20Nanotubes%20from%20Fluoride%20containing%20Aqueous%20Electrolyte%20by%20Anodic%20Oxidation%20and%20their%20Photoelectrochemical%20response.pdf
http://psasir.upm.edu.my/id/eprint/25215/
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spelling my.upm.eprints.252152015-10-05T01:24:51Z http://psasir.upm.edu.my/id/eprint/25215/ Fabrication of highly ordered TiO2 Nanotubes from Fluoride containing Aqueous Electrolyte by Anodic Oxidation and their Photoelectrochemical response. Lim, Ying Chin Zainal, Zulkarnain Hussein, Zainal Tan, Wee Tee The fabrication of TiO2 nanotubes (TNT) was carried out by electrochemical anodization of Ti in aqueous electrolyte containing NH4F. The effect of electrolyte pH, applied voltage, fluoride concentration and anodization duration on the formation of TNT was investigated. It was observed that self-organized TNT can be formed by adjusting the electrolyte to pH 2-4 whereby applied voltage of 10-20 V can be performed to produce highly ordered, well-organized TNT. At 20 V, TNT can be fabricated in the concentration range of 0.07 M to 0.20 M NH4F. Higher fluoride concentration leads to etching of Ti surface and reveals the Ti grain boundaries. The prepared TNT films also show an increase in depth and in size with time and the growth of TNT films reach a steady state after 120 minutes. The morphology and geometrical aspect of the TNT would be an important factor influencing the photoelectrochemical response, with higher photocurrent response is generally associated with thicker layer of TNT. Consequently, one can tailor the resulting TNT to desired surface morphologies by simply manipulating the electrochemical parameters for wide applications such as solar energy conversion and photoelectrocatalysis. American Scientific Publishers 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/25215/1/Fabrication%20of%20highly%20ordered%20TiO2%20Nanotubes%20from%20Fluoride%20containing%20Aqueous%20Electrolyte%20by%20Anodic%20Oxidation%20and%20their%20Photoelectrochemical%20response.pdf Lim, Ying Chin and Zainal, Zulkarnain and Hussein, Zainal and Tan, Wee Tee (2011) Fabrication of highly ordered TiO2 Nanotubes from Fluoride containing Aqueous Electrolyte by Anodic Oxidation and their Photoelectrochemical response. Journal of Nanoscience and Nanotechnology, 11 (6). pp. 4900-4909. ISSN 1533-4880; ESSN:1533-4899 http://www.aspbs.com/ English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description The fabrication of TiO2 nanotubes (TNT) was carried out by electrochemical anodization of Ti in aqueous electrolyte containing NH4F. The effect of electrolyte pH, applied voltage, fluoride concentration and anodization duration on the formation of TNT was investigated. It was observed that self-organized TNT can be formed by adjusting the electrolyte to pH 2-4 whereby applied voltage of 10-20 V can be performed to produce highly ordered, well-organized TNT. At 20 V, TNT can be fabricated in the concentration range of 0.07 M to 0.20 M NH4F. Higher fluoride concentration leads to etching of Ti surface and reveals the Ti grain boundaries. The prepared TNT films also show an increase in depth and in size with time and the growth of TNT films reach a steady state after 120 minutes. The morphology and geometrical aspect of the TNT would be an important factor influencing the photoelectrochemical response, with higher photocurrent response is generally associated with thicker layer of TNT. Consequently, one can tailor the resulting TNT to desired surface morphologies by simply manipulating the electrochemical parameters for wide applications such as solar energy conversion and photoelectrocatalysis.
format Article
author Lim, Ying Chin
Zainal, Zulkarnain
Hussein, Zainal
Tan, Wee Tee
spellingShingle Lim, Ying Chin
Zainal, Zulkarnain
Hussein, Zainal
Tan, Wee Tee
Fabrication of highly ordered TiO2 Nanotubes from Fluoride containing Aqueous Electrolyte by Anodic Oxidation and their Photoelectrochemical response.
author_facet Lim, Ying Chin
Zainal, Zulkarnain
Hussein, Zainal
Tan, Wee Tee
author_sort Lim, Ying Chin
title Fabrication of highly ordered TiO2 Nanotubes from Fluoride containing Aqueous Electrolyte by Anodic Oxidation and their Photoelectrochemical response.
title_short Fabrication of highly ordered TiO2 Nanotubes from Fluoride containing Aqueous Electrolyte by Anodic Oxidation and their Photoelectrochemical response.
title_full Fabrication of highly ordered TiO2 Nanotubes from Fluoride containing Aqueous Electrolyte by Anodic Oxidation and their Photoelectrochemical response.
title_fullStr Fabrication of highly ordered TiO2 Nanotubes from Fluoride containing Aqueous Electrolyte by Anodic Oxidation and their Photoelectrochemical response.
title_full_unstemmed Fabrication of highly ordered TiO2 Nanotubes from Fluoride containing Aqueous Electrolyte by Anodic Oxidation and their Photoelectrochemical response.
title_sort fabrication of highly ordered tio2 nanotubes from fluoride containing aqueous electrolyte by anodic oxidation and their photoelectrochemical response.
publisher American Scientific Publishers
publishDate 2011
url http://psasir.upm.edu.my/id/eprint/25215/1/Fabrication%20of%20highly%20ordered%20TiO2%20Nanotubes%20from%20Fluoride%20containing%20Aqueous%20Electrolyte%20by%20Anodic%20Oxidation%20and%20their%20Photoelectrochemical%20response.pdf
http://psasir.upm.edu.my/id/eprint/25215/
http://www.aspbs.com/
_version_ 1643828593951768576
score 13.211869

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