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1 Materials Science Poland

1 2011

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

Pasha M. A., Fakhroueian Z., Shafiekhani A., Vesaghi M. A., Farzaneh F.

Materials Science Poland

2011

Vol. 29, No. 2

144--151

Ni-Si mixed oxide nanocomposite was prepared by co-precipitation method with Ni(NO3)2 ź 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.