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

Pasha, M. A ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.2478/s13536-011-0022-8
  3. Publisher: 2011
  4. Abstract:
  5. Ni-Si mixed oxide nanocomposite was prepared by co-precipitation method with Ni(NO 3) 2 ·6H 2O 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
  6. Keywords:
  7. Ni-Si mixed oxide ; Average diameter ; Coprecipitation method ; Mixed oxide ; Nanotubes formation ; Reflux conditions ; Tetraethyl orthosilicates ; Transmission electron microscopy tem ; Carbon nanotubes ; Catalysts ; Nanocomposites ; Nanorods ; Photoelectrons ; Raman spectroscopy ; Scanning electron microscopy ; Transmission electron microscopy ; X ray diffraction analysis ; X ray photoelectron spectroscopy ; Silicon
  8. Source: Materials Science- Poland ; Volume 29, Issue 2 , June , 2011 , Pages 152-157 ; 01371339 (ISSN)
  9. URL: http://link.springer.com/article/10.2478%2Fs13536-011-0022-8