From anodic TiO2 nanotubes to hexagonally ordered TiO2 nanocolumns

被引：22

作者：

Ruff, T. ^{[1
]}

Hahn, R. ^{[1
]}

Schmuki, P. ^{[1
]}

机构：

[1] Univ Erlangen Nurnberg, Dept Mat Sci & Engn, LKO WW4, D-91058 Erlangen, Germany

来源：

APPLIED SURFACE SCIENCE | 2011年 / 257卷 / 19期

关键词：

TiO2; Nanotubes; Temperature; Diameter; Nanocolumns; ARRAYS; ANODIZATION; TITANIUM; LAYERS;

D O I：

10.1016/j.apsusc.2011.03.050

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：

We report on the formation of hexagonally ordered TiO2 nanocolumnar layers by electrochemical oxidation in a fluoride containing electrolyte, using self-organizing nanotube formation conditions at elevated potentials and low temperatures. The influence of the substrate temperature on the nanocolumn morphology and composition is investigated and characterized by FE-SEM and EDX. The origin of these nanocolumns can be attributed to a thickening of the inner tube wall of the double wall structure of self-organized TiO2 nanotubes. Furthermore, a transition from nanocolumnar to nanotubular structure can be established by changing the applied voltage or applying a post-immersion treatment. (C) 2011 Elsevier B. V. All rights reserved.

引用

页码：8177 / 8181

页数：5

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