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通过二氧化钛与氢氧化钠溶液反应制备成功半径 9nm的结晶度很好的纳米管材料。高分辨透射电镜研究显示大部分纳米管是顶端开口的螺旋型纳米管。用X射线能谱和能量损失谱研究了孤立纳米管的成分 ,发现氧与钛的原子比并不为一定值。化学分析和红外光谱研究显示材料中含成键的氢。综合电子衍射、X射线衍射、高分辨电子显微术和计算机模拟研究了纳米管的结构。该纳米管是由具有单斜结构的钛酸形成的 ,钛酸的 (1 1 0 )层面沿 [0 0 1 ]方向卷曲形成管轴平行 [0 1 0 ]的纳米管
Through the reaction of titanium dioxide and sodium hydroxide solution to prepare a successful 9nm radius of good crystallinity nanotube material. High-resolution transmission electron microscopy showed most of the nanotubes were open-ended spiral nanotubes. The composition of isolated nanotubes was investigated by X-ray energy spectra and energy loss spectroscopy. It was found that the atomic ratio of oxygen to titanium was not constant. Chemical analysis and FTIR studies show that the material contains hydrogen bonded. The structure of the nanotubes was investigated by means of electron diffraction, X-ray diffraction, high-resolution electron microscopy and computer simulation. The nanotubes are formed of titanic acid having a monoclinic structure. The (110) plane of the titanic acid is curled in the [0 0 1] direction to form nanotubes parallel to the tube axis [0 1 0]