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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Rapid anodic oxidation of highly ordered TiO_2 nanotube arrays
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Rapid anodic oxidation of highly ordered TiO_2 nanotube arrays

机译：高阶TiO_2纳米管阵列的快速阳极氧化

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摘要

Highly ordered TiO_2 nanotube arrays prepared by anodic oxidation have attracted increasing research interests due to their promising applications in many scientific areas. To the best of our knowledge, a factor limiting the application of TiO_2 nanotube arrays was their long sustaining reaction time by anodic oxidation, usually lasting 6-12 h and even longer when synthesizing thicker nanotubular layers. In the present paper, we reported for the first time a facile but effective approach to accelerate the anodic formation of TiO_2 nanotube arrays by proper addition of sodium carbonate (Na_2CO_3) into the anodization electrolyte. We adopted the 0.3M NH_4F+0.03M Na_2CO_3 + EG (ethylene glycol) +3.0 vol.% H_20 electrolyte and the average growth rate of the nanotubes achieved in our experiments could be accelerated to 1100nm/min. The possible mechanism of the rapid electrochemical process was also presented.
机译：通过阳极氧化制备的高度有序的TiO_2纳米管阵列由于其在许多科学领域中的应用前景而引起了越来越多的研究兴趣。据我们所知，限制TiO_2纳米管阵列应用的一个因素是它们通过阳极氧化的持续反应时间长，通常持续6-12小时，甚至在合成较厚的纳米管层时甚至更长。在本文中，我们首次报道了一种通过在阳极氧化电解液中适当添加碳酸钠（Na_2CO_3）来加速TiO_2纳米管阵列阳极形成的简便而有效的方法。我们采用了0.3M NH_4F + 0.03M Na_2CO_3 + EG（乙二醇）+3.0 vol。％H_20电解质，并且在我们的实验中，纳米管的平均生长速率可以提高到1100nm / min。还提出了快速电化学过程的可能机理。

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