TiO2 Nanotube Arrays Electrode Prepared by Anodic Oxidation and Its Photoelectrochemical Properties

doi:10.3724/SP.J.1077.2007.00349

Abstract

Abstract:

TiO₂ nanotube arrays photoelectrodes were fabricated by anodic oxidation on a pure titanium sheet. The morphology and structure of the nanotube arrays were characterized by SEM and XRD. Oxidation parameters for preparation were investigated. The photoelectrochemical properties of the TiO₂ nanotube arrays electrodes were evaluated by steady-state photocurrent response. The results show that the vertical oriented TiO₂ nanotube arrays can be obtained at 20V for 30min in 1wt% HF solution. And the aperture size of nanotubes is about 90nm and the thickness of tube wall is about 10nm. The structure of nanotube arrays is a mixture of anatase and rutile through annealed at 600℃. The results of photoelectric testing show that photoelectrochemical properties of TiO2 nanotube arrays electrode annealed at 600℃ are optimum. Compared with TiO₂ nanoporous films, the properties of the TiO₂ nanotube arrays are enhanced remarkably.

Key words: anodic oxidation, TiO2 nanotubes, array, photoelectrochemistry

CLC Number:

O646

LI He,YAO Su-Wei,ZHANG Wei-Guo,WANG Hong-Zhi,BEN Yu-Heng. TiO₂ Nanotube Arrays Electrode Prepared by Anodic Oxidation and Its Photoelectrochemical Properties[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2007.00349.

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TiO₂ Nanotube Arrays Electrode Prepared by Anodic Oxidation and Its Photoelectrochemical Properties

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