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

M. Terrones, H. Terrones, N. Grobert, W. K. Hsu, Y. Q. Zhu, J. P. Hare, H. W. Kroto, D. R.M. Walton, Ph Kohler-Redlich, M. Rühle, J. P. Zhang, A. K. Cheetham

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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.

Original languageEnglish (US)
Pages (from-to)3932-3934
Number of pages3
JournalApplied Physics Letters
Volume75
Issue number25
DOIs
StatePublished - Dec 20 1999

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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