Effect of Applied Potential on the Formation of Self-Organized TiO2 Nanotube Arrays and Its Photoelectrochemical Response

Effect of Applied Potential on the Formation of Self-Organized TiO2 Nanotube Arrays and Its Photoelectrochemical Response

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Self-organized TiO2 nanotube arrays have been fabricated by anodization of Ti foil in an electrochemical bath consisting of 1 M of glycerol with 0.5 wt% of NH4F. The effects of applied p...

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Main Authors: Chin Wei Lai, Srimala Sreekantan
Format: Article
Language:English
Published: Hindawi Limited 2011-01-01
Series:Journal of Nanomaterials
Online Access:http://dx.doi.org/10.1155/2011/142463
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spelling doaj-0a80038f81ef4fdd90fbd6c921277e3d2020-11-24T23:26:31ZengHindawi LimitedJournal of Nanomaterials1687-41101687-41292011-01-01201110.1155/2011/142463142463Effect of Applied Potential on the Formation of Self-Organized TiO2 Nanotube Arrays and Its Photoelectrochemical ResponseChin Wei Lai0Srimala Sreekantan1School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia Engineering Campus, Seberang Perai Selatan, Pulau Pinang, 14300 Nibong Tebal, MalaysiaSchool of Materials and Mineral Resources Engineering, Universiti Sains Malaysia Engineering Campus, Seberang Perai Selatan, Pulau Pinang, 14300 Nibong Tebal, MalaysiaSelf-organized TiO2 nanotube arrays have been fabricated by anodization of Ti foil in an electrochemical bath consisting of 1 M of glycerol with 0.5 wt% of NH4F. The effects of applied potential on the resulting nanotubes were illustrated. Among all of the applied potentials, 30 V resulted in the highest uniformity and aspect ratio TiO2 nanotube arrays with the tube's length approximately 1 μm and pore's size of 85 nm. TiO2 nanotube arrays were amorphous in as-anodized condition. The anatase phase was observed after annealing at 400∘C in air atmosphere. The effect of crystallization and effective surface area of TiO2 nanotube arrays in connection with the photoelectrochemical response was reported. Photoelectrochemical response under illumination was enhanced by using the annealed TiO2 nanotube arrays which have larger effective surface area to promote more photoinduced electrons.http://dx.doi.org/10.1155/2011/142463
collection DOAJ
language English
format Article
sources DOAJ
author Chin Wei Lai
Srimala Sreekantan
spellingShingle Chin Wei Lai
Srimala Sreekantan
Effect of Applied Potential on the Formation of Self-Organized TiO2 Nanotube Arrays and Its Photoelectrochemical Response
Journal of Nanomaterials
author_facet Chin Wei Lai
Srimala Sreekantan
author_sort Chin Wei Lai
title Effect of Applied Potential on the Formation of Self-Organized TiO2 Nanotube Arrays and Its Photoelectrochemical Response
title_short Effect of Applied Potential on the Formation of Self-Organized TiO2 Nanotube Arrays and Its Photoelectrochemical Response
title_full Effect of Applied Potential on the Formation of Self-Organized TiO2 Nanotube Arrays and Its Photoelectrochemical Response
title_fullStr Effect of Applied Potential on the Formation of Self-Organized TiO2 Nanotube Arrays and Its Photoelectrochemical Response
title_full_unstemmed Effect of Applied Potential on the Formation of Self-Organized TiO2 Nanotube Arrays and Its Photoelectrochemical Response
title_sort effect of applied potential on the formation of self-organized tio2 nanotube arrays and its photoelectrochemical response
publisher Hindawi Limited
series Journal of Nanomaterials
issn 1687-4110
1687-4129
publishDate 2011-01-01
description Self-organized TiO2 nanotube arrays have been fabricated by anodization of Ti foil in an electrochemical bath consisting of 1 M of glycerol with 0.5 wt% of NH4F. The effects of applied potential on the resulting nanotubes were illustrated. Among all of the applied potentials, 30 V resulted in the highest uniformity and aspect ratio TiO2 nanotube arrays with the tube's length approximately 1 μm and pore's size of 85 nm. TiO2 nanotube arrays were amorphous in as-anodized condition. The anatase phase was observed after annealing at 400∘C in air atmosphere. The effect of crystallization and effective surface area of TiO2 nanotube arrays in connection with the photoelectrochemical response was reported. Photoelectrochemical response under illumination was enhanced by using the annealed TiO2 nanotube arrays which have larger effective surface area to promote more photoinduced electrons.
url http://dx.doi.org/10.1155/2011/142463
work_keys_str_mv AT chinweilai effectofappliedpotentialontheformationofselforganizedtio2nanotubearraysanditsphotoelectrochemicalresponse
AT srimalasreekantan effectofappliedpotentialontheformationofselforganizedtio2nanotubearraysanditsphotoelectrochemicalresponse
_version_ 1725554745964232704

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