Carbon nanofibers and multiwalled carbon nanotubes from camphor and their field electron emission

Savita P. Somani, Prakash R. Somani, M. Tanemura, Shu Ping Lau, M. Umeno

Research output: Journal article publicationJournal articleAcademic researchpeer-review

21 Citations (Scopus)

Abstract

Vertically aligned carbon nanofibers (CNF) and multiwalled carbon nanotubes (MWCN) have been synthesized from camphor by catalytic thermal CVD method on Co and Co/Fe thin films (for CNF) and on silicon substrates using a mixture of camphor and ferrocene (for MWCN). CNF and MWCN are studied by field emission scanning electron microscopy, high-resolution transmission electron microscopy, visible Raman spectroscopy, X-ray diffraction in order to get insight into the microstructure and morphology of these materials. Field electron emission study indicates turn-on field of about 2.56, 3.0 and 6.5 V/μm for MWCN, Co/CNF and Co/Fe/CNF films, respectively. The best performance of MWCN in field electron emission among the materials studied can be due to the highest aspect ratio, good graphitization and good density.
Original languageEnglish
Pages (from-to)144-150
Number of pages7
JournalCurrent Applied Physics
Volume9
Issue number1
DOIs
Publication statusPublished - 1 Jan 2009
Externally publishedYes

Keywords

  • Camphor
  • Carbon nanofibers
  • Carbon nanotubes
  • Field electron emission
  • Multiwalled carbon nanotubes
  • Thermal CVD

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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