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Synthesis and characterization of Ni-Si mixed oxide nanocomposite as a catalyst for carbon nanotubes formation

Authors
  • Pasha, M.
  • Fakhroueian, Z.
  • Shafiekhani, A.
  • Vesaghi, M.
  • Farzaneh, F.
Type
Published Article
Journal
Materials Science-Poland
Publisher
Versita
Publication Date
Jun 01, 2011
Volume
29
Issue
2
Pages
152–157
Identifiers
DOI: 10.2478/s13536-011-0022-8
Source
De Gruyter
Keywords
License
Green

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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