期刊
JOURNAL OF MATERIALS RESEARCH
卷 26, 期 3, 页码 437-442出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1557/jmr.2010.33
关键词
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资金
- National Natural Science Foundation of China [50872001]
- Research Fund for the Doctoral Program of Higher Education of China [20060357003]
- Higher Educational Natural Science Foundation of Anhui Province, China [KJ2008B015, KJ2010A123]
- Open Foundation of Anhui Key Laboratory of Information Materials and Devices, China
- Key Project of Anhui Province, China [05021028]
- Talent Foundation of Anhui Province, China [2004Z029]
- Talent Development Foundation of Anhui University, Anhui Province, China
TiO(2) nanotube arrays were synthesized by anodic oxidation on a pure titanium substrate in solutions containing 0.175 M NH(4)F composed of mixtures with different volumetric ratios of DI water and glycerol. According to the results of the current curve recorded during anodization, the time of the first sharp current slope (corresponding to the initial oxide layer formation time) was found to vary from 8 to 171 s depending not only upon the water content in the electrolytes but also upon the voltage. The current curves exhibit oscillation with different amplitudes and periods. In combination with the scanning electron microscope (SEM) images, a growth mechanism, layer-by-layer model, of TiO(2) nanotube arrays was presented. Based on this mechanism, many phenomena that appeared during anodization can be reasonably explained. Our results would be helpful for the design of nanoarchitectures in related material systems.
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