Formation of titanium oxide nanotube
Formation of titanium oxide nanotube
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DOI：
10.1021/la9713816
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发表时间：
1998-06-09
期刊：
影响因子：
3.9
通讯作者：
Niihara, K
中科院分区：
文献类型：
--
作者：
Kasuga, T;Hiramatsu, M;Niihara, K
最近已经研究了由各种材料（例如碳、氮化硼和氧化物）组成的纳米管。在这份报告中，发现了一种新的途径，用于合成由氧化钛制成的纳米管。当对溶胶-凝胶衍生的细TiO 2基粉末进行化学处理（例如，在110 ° C下搅拌20小时）与5-10 M NaOH水溶液反应。通过使用透射电子显微镜观察发现，针状产物具有管状结构。TiO 2纳米管具有约400 m2·g（-1）的大比表面积。在本工作中获得的二氧化钛纳米管预计有很大的潜力，用于制备催化剂，吸附剂，并具有高活性的澄清剂，因为它们的比表面积大大增加。如果可以将金属、无机或有机基材料插入到TiO 2纳米管中，则可以在TiO 2材料中诱导新的特性，例如电、电磁或化学性质。
Nanotubes composed of various materials such as carbon, boron nitride, and oxides have been studied recently. In this report, the discovery of a new route for the synthesis of a nanotube made of titanium oxide is presented. Needle-shaped TiO2 crystals (anatase phase) with a diameter of approximate to 8 nm and a length of approximate to 100 nm were obtained when sol-gel-derived fine TiO2-based powders were treated chemically (e.g., for 20 h at 110 degrees C) with a 5-10 M NaOH aqueous solution. It was found by observation using a transmission electron microscope that the needle-shaped products have a tube structure. The TiO2 nanotubes have a large specific surface area of approximate to 400 m(2).g(-1). TiO2 nanotubes obtained in the present work are anticipated to have great potential for use in the preparation of catalysts, adsorbants, and deodorants with high activities, because their specific surface area is greatly increased. If metallic-, inorganic-, or organic-based materials can be inserted into the TiO2 nanotubes, novel characteristics such as electric, electromagnetic, or chemical properties may be induced in the TiO2 materials.