한국전기전자재료학회:학술대회논문집 (Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference)

한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
권호 표지

The effect of Sodium Concentrations on the Formation of Nanotubes Obtained from $TiO_2$

  • Qamar, M. (Sejong Advanced Institute of Nano Technologies, Department of Nano Science and Technology, Sejong University) ;
  • Lee, N.H. (Sejong Advanced Institute of Nano Technologies, Department of Nano Science and Technology, Sejong University) ;
  • Yoon, C.R. (Sejong Advanced Institute of Nano Technologies, Department of Nano Science and Technology, Sejong University) ;
  • Oh, H.J. (Sejong Advanced Institute of Nano Technologies, Department of Nano Science and Technology, Sejong University) ;
  • Kim, S.J. (Sejong Advanced Institute of Nano Technologies, Department of Nano Science and Technology, Sejong University) ;
  • Hwang, J.S. (Department of Electricity Applied Computer, Namdo Province College)
  • 발행 : 2006.12.01
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초록

The $TiO_2$ sol was prepared hydrothermally in an autoclave from aqueous $TiOCl_2$ solutions as a starting precursor. Hollow fibers were obtained when the sol-gel-derived $TiO_2$ sol was treated chemically with a NaOH solution and subsequently heated in the autoclave under various conditions. A systematic analysis of the influence of different NaOH concentrations on the formation of nanotubes was carried out. The details of the nanotubular structure were investigated by using transmission electron microscopy (TEM), scanning electron microscopy (SEM) and X-ray diffraction (XRD). From the TEM images, the outer and the inner diameters of the tubes were measured to be about 8 and 4 nm, respectively, the lengths were measured to be several hundreds of nanometers.

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