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25 November 2014Properties and structure of carbon nanotubes in the system C-Ni
We present results of Raman studies of CNT-Ni films obtained in two steps method. In the first step an initial
nanocomposite Ni-C film (produced by PVD method) was prepared. This initial film has multiphase composite-like
structure with nanograins of fullerenes, amorphous carbon and nickel. In the second step CNTs were obtained by CVD
method. In this process the initial films were placed in a quartz tube reactor where pyrolysis process were performed in
xylene. Decomposition of xylene at 650°C was occurred. Products of this CVD decomposition process take part in
nanotubes growth on Ni nanograins. These nanograins play a role of a catalyser of the growth process. SEM
observations showed that form of nanotubes obtained with the various CVD process parameters is similar.
Raman studies of initial films (obtained PVD process) confirm the presence of fullerenes C60 in and some forms of
graphite–like objects in the samples. Raman spectra of MWCNTs films contained: bands characteristic for carbon
nanotube’s vibrations.
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E. Czerwosz, J. Kęczkowska, E. Kowalska, M. Kozłowski, J. Radomska, M. Suchańska, H. Wronka, "Properties and structure of carbon nanotubes in the system C-Ni," Proc. SPIE 9290, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2014, 929016 (25 November 2014); https://doi.org/10.1117/12.2074765