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Issue 24, 2011
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Effects of titania nanotube distance and arrangement during focused ion beam guided anodization

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Abstract

Anodic TiO2 nanotube arrays possess exciting application potentials in solar cells and photocatalysis. However, self-organized anodization alone can only produce randomly arranged nanotubes. In this study, focused ion beam (FIB) guided anodization is used to create highly ordered TiO2 nanotube arrays with different intertube distances and tube arrangements. On the one hand, FIB patterning greatly enhances the organization of the nanotubes for the classic hexagonal close packing. On the other hand, fundamentally different nanotube arrangements, such as square, oblique hexagonal, and alternating-sized patterns, are also created. The self-compensating effect enables the development of alternating-sized TiO2 nanotube hexagonal arrays from graphite lattice FIB guiding patterns. The mechanism of the FIB guided anodization is proposed. This approach presents great opportunities in producing ordered TiO2 nanotubes and new nanotube arrangements for the desired applications.

Graphical abstract: Effects of titania nanotube distance and arrangement during focused ion beam guided anodization

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Article information


Submitted
12 Mar 2011
Accepted
14 Apr 2011
First published
16 May 2011

J. Mater. Chem., 2011,21, 8835-8840
Article type
Paper

Effects of titania nanotube distance and arrangement during focused ion beam guided anodization

B. Chen, K. Lu and Z. Tian, J. Mater. Chem., 2011, 21, 8835
DOI: 10.1039/C1JM11083G

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