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

被引:254
作者
Terrones, M [1 ]
Terrones, H
Grobert, N
Hsu, WK
Zhu, YQ
Hare, JP
Kroto, HW
Walton, DRM
Kohler-Redlich, P
Rühle, M
Zhang, JP
Cheetham, AK
机构
[1] Univ Sussex, CPES, Fullerene Sci Ctr, Brighton BN1 9QJ, E Sussex, England
[2] Univ Nacl Autonoma Mexico, Inst Fis, Queretaro 76000, Mexico
[3] Max Planck Inst Met Res, D-70174 Stuttgart, Germany
[4] Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA
关键词
D O I
10.1063/1.125498
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report a high-yield route to two-dimensional arrays (< 400x400 mu m(2)) of aligned C49Nx (x less than or equal to 1) nanofibers (< 100 nm o.d.; < 60 mu m length), by pyrolyzing mixtures of ferrocene and melamine at 950-1050 degrees 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 similar to 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. (C) 1999 American Institute of Physics. [S0003-6951(99)00351-4].
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收藏
页码:3932 / 3934
页数:3
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