One-dimensional TiO2 nanotubes arrays: Influence of anodisation voltage and their photocatalytic activity performance

A systematic study of titanium dioxide (TiO2) nanotube arrays grown by electrochemical anodisation in an ethylene glycol electrolyte containing 0.5 wt-% ammonium fluoride has been carried out, with a range of anodisation voltage of 15-60 V for 1 hour. Among all of the applied anodisation voltages, 6...

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Main Authors: Lee, W.H., Lai, C.W., Lim, Y.S., Hamid, Sharifah Bee Abd
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Published: Taylor & Francis 2014
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Online Access:http://eprints.um.edu.my/15492/
https://doi.org/10.1179/1432891714Z.0000000001001
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spelling my.um.eprints.154922018-10-19T03:15:00Z http://eprints.um.edu.my/15492/ One-dimensional TiO2 nanotubes arrays: Influence of anodisation voltage and their photocatalytic activity performance Lee, W.H. Lai, C.W. Lim, Y.S. Hamid, Sharifah Bee Abd Q Science (General) QD Chemistry A systematic study of titanium dioxide (TiO2) nanotube arrays grown by electrochemical anodisation in an ethylene glycol electrolyte containing 0.5 wt-% ammonium fluoride has been carried out, with a range of anodisation voltage of 15-60 V for 1 hour. Among all of the applied anodisation voltages, 60 V resulted in the highest aspect ratio TiO2 nanotube arrays with the tube length of approximately 2 mu m and pore size of 105 nm. The diameter and length of nanotubes were found to be increased with anodisation voltage because of the high electric field dissolution at the barrier layer of nanotubes. Besides, the anatase phase of TiO2 could be detected from the X-ray diffraction patterns after subjecting the annealing process at 400 degrees C in argon atmosphere for 4 hours. Based on the photocatalytic studies, it was observed that TiO2 nanotube arrays with the highest aspect ratio (length/pore's size) exhibited preferably high photocatalytic activity among the samples owing to the larger active surface area to generate more photo-induced electron-hole pairs. This condition will enhance the photocatalytic degradation efficiency of methyl orange. Taylor & Francis 2014 Article PeerReviewed Lee, W.H. and Lai, C.W. and Lim, Y.S. and Hamid, Sharifah Bee Abd (2014) One-dimensional TiO2 nanotubes arrays: Influence of anodisation voltage and their photocatalytic activity performance. Materials Research Innovations, 18 (S6). pp. 474-476. ISSN 1432-8917 https://doi.org/10.1179/1432891714Z.0000000001001 doi:10.1179/1432891714Z.0000000001001
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
QD Chemistry
spellingShingle Q Science (General)
QD Chemistry
Lee, W.H.
Lai, C.W.
Lim, Y.S.
Hamid, Sharifah Bee Abd
One-dimensional TiO2 nanotubes arrays: Influence of anodisation voltage and their photocatalytic activity performance
description A systematic study of titanium dioxide (TiO2) nanotube arrays grown by electrochemical anodisation in an ethylene glycol electrolyte containing 0.5 wt-% ammonium fluoride has been carried out, with a range of anodisation voltage of 15-60 V for 1 hour. Among all of the applied anodisation voltages, 60 V resulted in the highest aspect ratio TiO2 nanotube arrays with the tube length of approximately 2 mu m and pore size of 105 nm. The diameter and length of nanotubes were found to be increased with anodisation voltage because of the high electric field dissolution at the barrier layer of nanotubes. Besides, the anatase phase of TiO2 could be detected from the X-ray diffraction patterns after subjecting the annealing process at 400 degrees C in argon atmosphere for 4 hours. Based on the photocatalytic studies, it was observed that TiO2 nanotube arrays with the highest aspect ratio (length/pore's size) exhibited preferably high photocatalytic activity among the samples owing to the larger active surface area to generate more photo-induced electron-hole pairs. This condition will enhance the photocatalytic degradation efficiency of methyl orange.
format Article
author Lee, W.H.
Lai, C.W.
Lim, Y.S.
Hamid, Sharifah Bee Abd
author_facet Lee, W.H.
Lai, C.W.
Lim, Y.S.
Hamid, Sharifah Bee Abd
author_sort Lee, W.H.
title One-dimensional TiO2 nanotubes arrays: Influence of anodisation voltage and their photocatalytic activity performance
title_short One-dimensional TiO2 nanotubes arrays: Influence of anodisation voltage and their photocatalytic activity performance
title_full One-dimensional TiO2 nanotubes arrays: Influence of anodisation voltage and their photocatalytic activity performance
title_fullStr One-dimensional TiO2 nanotubes arrays: Influence of anodisation voltage and their photocatalytic activity performance
title_full_unstemmed One-dimensional TiO2 nanotubes arrays: Influence of anodisation voltage and their photocatalytic activity performance
title_sort one-dimensional tio2 nanotubes arrays: influence of anodisation voltage and their photocatalytic activity performance
publisher Taylor & Francis
publishDate 2014
url http://eprints.um.edu.my/15492/
https://doi.org/10.1179/1432891714Z.0000000001001
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