| 阳极氧化TiO_2纳米线生长研究 |
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| 引用本文： | 侯峰,阴育新,谭欣,赵林. 阳极氧化TiO_2纳米线生长研究[J]. 材料工程, 2010, 0(3) |
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| 作者姓名： | 侯峰 阴育新 谭欣 赵林 |
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| 作者单位： | 1. 天津大学,材料学院,天津,300072
2. 天津大学,化工学院,天津,300072 |
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| 基金项目： | 国家自然科学基金项目，博士后基金资助项目 |
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| 摘 要： | 采用NH4F-乙二醇-H2O溶液体系的电化学阳极氧化法,在金属钛基板上形成厚度为0.9~36μm的TiO2纳米管阵列。研究了阳极氧化电压、氧化时间及电解液的组成对TiO2纳米管阵列结构的影响。结果表明,当醇水体积比为39∶1时,60V电压下氧化2h,TiO2纳米管顶部的氧化层在缺陷处发生二次击穿溶解,产生自组装的孔核,场助溶解驱动力使纳米管顶部在孔核处沿管轴向垂直劈裂,形成直径20nm、长度可达几微米的TiO2纳米线。
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| 关 键 词： | TiO_2纳米线 阳极氧化 NH_4F-乙二醇-H_2O TiO_2纳米管阵列 |
Fabrication TiO_2 Nanowires by Electrochemical Anodization |
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| HOU Feng,YIN Yu-xin,TAN Xin,ZHAO Lin. Fabrication TiO_2 Nanowires by Electrochemical Anodization[J]. Journal of Materials Engineering, 2010, 0(3) |
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| Authors: | HOU Feng YIN Yu-xin TAN Xin ZHAO Lin |
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| Abstract: | Anodization of titanium in a fluorinated glycol and H_2O electrolyte was investigated. The prepared anodic film had nanotube-array architecture with 0.9-36 μm tube length. We discuss in details the influence of anodic voltage, anodic time and electrolyte composition on the structure of titania nanotubes. The result showed that TiO_2 nanowires with a diameter of 20nm and a length up to several micron only can be synthesized in NH_4F/glycol solution with a small amount of water (glycol:H_2O=39:1), 60V anodic voltage and 2h anodic time. The nanowires originated from the vertical splitting of anodically grown nanotubes. |
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| Keywords: | TiO_2 nanowire anodization NH_4F-glycol-H_2O electrolyte TiO_2 nanotube array |
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