Smooth anodic TiO<sub>2</sub> nanotubes: annealing and structure

Jan M. Macák, Saule Aldabergerova, Andrei Ghicov, Patrik Schmuki

physica status solidi (a) · 2006 · 105 citations · 17 references

Concepts

Abstract

Abstract The influence of an annealing process on the structure and the composition of smooth high aspect ratio TiO 2 nanotube layers, grown by anodization of Ti in viscous glycerol electrolytes containing fluorides, is reported. XRD and HRTEM measurements demonstrate that the as‐formed high aspect ratio TiO 2 nanotubes have an amorphous structure that can be entirely transformed to single phase – anatase – upon thermal annealing at 450 °C for 3 hours. XPS and EDX analyses furthermore show that annealing process is accompanied with an elimination of fluoride ions (present in the structure after formation). (© 2006 WILEY‐VCH Verlag GmbH &amp; Co. KGaA, Weinheim)

References

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