Journal
FUEL
Volume 147, Issue -, Pages 35-42Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2015.01.043
Keywords
Single and multi-walled carbon nanotubes; Graphene; Bituminous coal; Arc discharge
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Funding
- DST: UNANST, DRDO Council of scientific and industrial research (CSIR), University grant commission (UGC) New Delhi, India
- UGC-Dr DS Kothari PDF fellowship [F.4-2/2006(BSR)/13-768/2012(BSR)]
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Single-walled carbon nanotubes (SWCNTs) have been synthesized by electric arc discharge method using annealed coal electrode in the presence of Fe as well as Ni-Y as catalysts. Multi-walled carbon nanotubes (MWCNTs) have been synthesized without using any catalysts. The efforts have also been made to synthesized graphene like nanosheets from bituminous coal. The as-synthesized samples have been characterized through scanning and transmission electron microscopy, Raman and Fourier transform infrared spectroscopy. The formation of SWCNTs which holds nearly perfect one dimensional structure is confirmed by the presence of radial breathing mode. A feasible mechanism of CNTs formation from coal described here with the help of Fourier transform infrared spectroscopy. (C) 2015 Elsevier Ltd. All rights reserved.
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