2020   01   az   p.31-35 R.F. Hasanov1,2,
Analysis of the influence of sulphur on the diameter of carbon nanotubes		  pdf 

ABSTRACT

The article reports on the role of sulfur in the synthesis of carbon nanotubes (CNTs) by aerosol-assisted chemical vapor deposition method (AACVD).The growth process of CNTs was carried out at the atmospheric pressure and at high temperatures (Т = 850 – 1000С).In this process, xylene was used as a carbon source, and a mixture of ferrocene and sulfur was used as a catalyst .It was determined that the addition of sulfur leads to reduction in the average particle size of the catalyst (Fe:S = 10:1) and, as a result, the number of walls of synthesized CNTs decreases. Moreover, it was found that the presence of high content of sulfur in the reactant mixture caused the formation of amorphous carbon, and a small amount of sulfur generated the formation of multi-walled CNTs and carbon fibers. The diameter of CNTs varies in dependence on sulfur content. The characterization of synthesized CNTs was performed by using scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Raman spectroscopy. From the obtained results, it can be concluded that the use of sulfur in the synthesis of CNTs by the AACVD method leads to a decrease of the number of walls of formed CNTs.

Keywords: Carbon Nanotubes (CNBs), Aerosol-based CNT method, Ferrocene, Sulfur, Xylene, SEM, TEM, Raman.
PACS: 73.63.Fg, 81.15.Gh, 61.66.Hq, 68.37.Hk, 68.37.Lp, 33.20.Fb.

DOI:-

Received: 23.01.2020

AUTHORS & AFFILIATIONS

1. Institute of Physics named after H.M. Abdullayev, of Azerbaijan National Academy of Sciences, 131, H. Javid ave., Baku, Az-1143, Azerbaijan
2. Research and Development Center for High Technologies, Ministry of Transport, Communications and High Technologies, Baku, Azerbaijan
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