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

被引：22

作者：

Chen, Bo ^{[1
]}

Lu, Kathy ^{[1
]}

Tian, Zhipeng ^{[1
]}

机构：

[1] Virginia Tech, Dept Mat Sci & Engn, Blacksburg, VA 24061 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 24期

基金：

美国国家科学基金会;

关键词：

ANODIC TIO2 NANOTUBES; MECHANISTIC ASPECTS; ARRAYS; GROWTH; WATER; FILMS; OXIDE; FABRICATION; LAYERS;

D O I：

10.1039/c1jm11083g

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：8835 / 8840

页数：6

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