Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 13, Issue 6, Pages 538-541Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2011.03.003
Keywords
TiO2 nanotubes; Anatase; Rutile; Phase stabilization; Annealing; Transition
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Funding
- Deutsche Forschungsgemeinschaft DFG [SCHM 1597/17-1]
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In the present work we demonstrate that amorphous anodic TiO2 nanotubes show upon annealing a tube diameter dependent phase stabilization. For tube diameters <30 rim the formation of ruffle is observed while for larger diameters anatase is formed. This effect is induced by the presence of the metallic substrate-in its absence all tube diameters are converted to anatase. As the nature of the stable phase strongly affects electronic, optical and biomedical properties of TiO2, the finding is of a high significance for many applications of TiO2 nanotubes. (C) 2011 Elsevier B.V. All rights reserved.
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