Nano Archive

TiO2 nanotube arrays of 1000 mu m length by anodization of titanium foil: Phenol red diffusion

Paulose, Maggie and Prakasam, Haripriya E. and Varghese, Oornman K. and Peng, Lily and Popat, Ketul C. and Mor, Gopal K. and Desai, Tejal A. and Grimes, Craig A. (2007) TiO2 nanotube arrays of 1000 mu m length by anodization of titanium foil: Phenol red diffusion. JOURNAL OF PHYSICAL CHEMISTRY C, 111 (41). pp. 14992-14997.

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Official URL: http://pubs.acs.org/doi/abs/10.1021/jp075258r

Abstract

We report for the first time fabrication of self-aligned hexagonally closed-packed titania nanotube arrays of over 1000 μm in length and aspect ratio ≈10 000 by potentiostatic anodization of titanium. We describe a process by which such thick nanotube array films can be transformed into self-standing, flat or cylindrical, mechanically robust, polycrystalline TiO2 membranes of precisely controlled nanoscale porosity. The self-standing membranes are characterized using Brunauer−Emmett−Teller surface area measurements, glancing angle X-ray diffraction, and transmission electron microscopy. In initial application, such membranes are used to control the diffusion of phenol red.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
Material Science > Nanochemistry
ID Code:2239
Deposited By:Anuj Seth
Deposited On:27 May 2009 14:30
Last Modified:27 May 2009 14:30

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