Efficient route to large arrays of CNx nanofibers by pyrolysis of ferrocene/melamine mixtures

Terrones, M, Terrones, H, Grobert, N, Hsu, W K, Zhu, Y Q, Hare, J P, Kroto, H W, Walton, D R M, Kohler-Redlich, Ph, Ruhle, M, Zhang, J P and Cheetham, A K (1999) Efficient route to large arrays of CNx nanofibers by pyrolysis of ferrocene/melamine mixtures. Applied Physics Letters, 75. pp. 3932-3934.

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Abstract

We report a high-yield route to two-dimensional arrays (<400×400 μm2) of aligned C49Nx (x ⩽ 1) nanofibers (<100 nm o.d.; <60 μm length), by pyrolyzing mixtures of ferrocene and melamine at 950–1050 °C under an Ar flow. The fibers exhibit unusual interlinked stacked-cone morphologies, ascribed to the presence of nitrogen. High-resolution electron energy-loss spectroscopy of the individual fibers reveals a 2% nitrogen content with ionization energies mainly at ∼400.9 eV, corresponding to N bonded to three C atoms within a hexagonal framework. The nanofibers may be useful for the economic fabrication of field emission sources and robust composites.

Item Type: Article
Schools and Departments: School of Life Sciences > Chemistry
Depositing User: EPrints Services
Date Deposited: 06 Feb 2012 19:49
Last Modified: 30 Nov 2012 17:04
URI: http://sro.sussex.ac.uk/id/eprint/22386
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