Fabrication and characterization of smooth high aspect ratio zirconia nanotubes

In the present work, we report formation of high aspect ratio zirconia nanotubes by electrochemical anodization of zirconium in a 1 M (NH 4) 2SO 4 electrolyte containing 0.5 wt% NH 4F. Highly self-organized zirconia nanotubes can be formed with a diameter of ≈50 nm and a length of ≈17 μm, i.e. with...

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Bibliographic Details
Published in:Chemical physics letters 2005-07, Vol.410 (4), p.188-191
Main Authors: Tsuchiya, Hiroaki, Macak, Jan M., Taveira, Luciano, Schmuki, Patrik
Format: Article
Language:English
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Summary:In the present work, we report formation of high aspect ratio zirconia nanotubes by electrochemical anodization of zirconium in a 1 M (NH 4) 2SO 4 electrolyte containing 0.5 wt% NH 4F. Highly self-organized zirconia nanotubes can be formed with a diameter of ≈50 nm and a length of ≈17 μm, i.e. with an aspect ratio of more than 300. The nanotubes show a distinct smooth and straight morphology. XRD investigation reveals that the nanotubes have a cubic crystalline structure directly after anodization, that is, without any further annealing.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2005.05.065