Graphitic cones in carbon nanofibres

H. Terrones, M. Muñoz-Navia, M. Terrones, T. Hayashi, Y. A. Kim, M. Endo, M. Muñoz-Navia, J. Dorantes-Dávila, M. Terrones, N. Grobert, R. Kamalakaran, R. Escudero, M. S. Dresselhaus

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

High yields of graphitic conical nanofibres (5-70nm OD; <5μm in length) are produced by pyrolysing various palladium precursors under an Ar atmosphere at 850-1000°C. The fibres exhibit diamond-shaped Pd particles at their tips, which are responsible for the carbon aggregation and its subsequent diffusion. This carbon replication phenomenon on the Pd particles results in the formation of stacked graphene cones, which grow aligned along a common axis, thus creating graphitic nanofibres. The cones within the fibres can be either open (lamp-shade type) or closed. The material has been analysed using sophisticated electron microscopy (HRTEM, SEM, ED) and spectroscopic techniques (Raman, EELS, EDX). Due to the large number of open edges, we envisage that these novel nanofibres may find important applications in the fabrication of field emitters, gas storage devices and composites.

Original languageEnglish (US)
Pages (from-to)[263]/39-[274]/50
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume387
Issue numberPART 2
DOIs
StatePublished - 2002
EventProceedings of the First International Symposium on Nanocarbons - Nagano, Japan
Duration: Nov 14 2001Nov 16 2001

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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