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Paper   IPM / Physic / 14135
School of Physics
  Title:   Synthesis and characterization of Ni-Si mixed oxide nanocomposite as a catalyst for carbon nanotubes formation
  Author(s): 
1.  M.A. Pasha
2.  Z. Fakhroueian
3.  A. Shafiekhani
4.  M.A. Vesaghi
5.  F. Farzaneh
  Status:   Published
  Journal: Mater. Sci.-Poland
  Vol.:  29
  Year:  2011
  Pages:   152-157
  Supported by:  IPM
  Abstract:
Ni-Si mixed oxide nanocomposite was prepared by co-precipitation method with Ni(NO3)2 · 6H2O and tetraethylorthosilicate (TEOS) at pH = 10.5 under reflux condition for 6 days. It was then used as a catalyst for the formation of carbon nanotubes (CNTs) by CVD procedure. Characterization of the catalyst and the CNTs was carried out using X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. The results showed that Ni-Si mixed oxides nanorods with the average diameter of 3 to 4 nm play a key role in CNTs formation.

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