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Synthesis, Characterization and Properties of Single-Walled Carbon Nanohorns

Pramoda, K and Moses, Kota and Ikram, Mohd and Vasu, K and Govindaraj, A and Rao, CNR (2014) Synthesis, Characterization and Properties of Single-Walled Carbon Nanohorns. In: JOURNAL OF CLUSTER SCIENCE, 25 (1). pp. 173-188.

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Official URL: http://dx.doi.org/10.1007/s10876-013-0652-6

Abstract

Single-walled nanohorns (SWNHs) have been prepared by sub-merged arc discharge of graphite electrodes in liquid nitrogen. The samples were examined by scanning electron microscopy, transmission electron microscopy and Raman spectroscopy. Nitrogen and boron doped SWNHs have been prepared by the sub-merged arc discharge method using melamine and elemental boron as precursors. Intensification of Raman D-band and stiffening of G-band has been observed in the doped samples. The electrical resistance of the SWNHs varies in opposite directions with nitrogen and boron doping. Functionalization of SWNHs through amidation has been carried out for solubilizing them in non-polar solvents. Water-soluble SWNHs have been produced by acid treatment and non-covalent functionalization with a coronene salt. SWNHs have been decorated with nanoparticles of Au, Ag and Pt. Interaction of electron donor (tetrathiafulvalene, TTF) and acceptor molecules (tetracyanoethylene, TCNE) with SWNHs has been investigated by Raman spectroscopy. Progressive softening and stiffening of Raman G-band has been observed respectively with increase in the concentration of TTF and TCNE.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to the SPRINGER/PLENUM PUBLISHERS, USA
Keywords: Single-walled nanohorns; Sub-merged arc discharge; Dahlia-like nanohorns; Charge-transfer; Doped nanohorns
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Depositing User: Id for Latest eprints
Date Deposited: 06 Mar 2014 07:01
Last Modified: 06 Mar 2014 07:01
URI: http://eprints.iisc.ac.in/id/eprint/48502

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