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Preparation of Titanium Oxide Nanotube by Hydrothermal Process

机译:水热法制备氧化钛纳米管

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The TiO_2 sol was prepared hydrothermally in an autoclave from aqueous TiOCl_2 solutions as starting precursor. Hollow fibers were obtained when sol-gel derived TiO_2 sol was treated chemically with NaOH solution and subsequently heated in autoclave under various conditions. A systematic analysis of the influence of different NaOH concentrations on the formation of nanotubes has been carried out using XRD and SEM. The phase structure of the synthesized material was determined by transmission electron microscopy and found that these materials are, infact, hollow fibers widely known as nanotubes. From the TEM images, the outer and inner diameters of the tubes were measured ca. 8 and about 4 nm, respectively, with several hundred nanometers in length.
机译:将TiO_2溶胶加热在高压釜中从TioCl_2溶液中的高压釜中作为起始前体。当用NaOH溶液化学处理溶胶 - 凝胶衍生的TiO_2溶胶时,获得中空纤维,随后在各种条件下在高压釜中加热。使用XRD和SEM进行了对不同NaOH浓度对纳米管形成的影响的系统分析。通过透射电子显微镜测定合成材料的相结构,发现这些材料是派别,中空纤维的广泛称为纳米管。从TEM图像,测量管的外径和内径。分别为8和约4nm,长度为几百纳米。

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