High-quality single-walled carbon nanotubes synthesized by catalytic decomposition of xylene over Fe-Mo/MgO catalyst and their field emission properties

Hui Zhang, Dong Hoon Shin, Heon Sang Lee, Cheol Jin Lee

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

High-quality single-walled carbon nanotubes (SWCNTs) were synthesized over Fe-Mo/MgO catalyst by catalytic decomposition of xylene. The synthesized carbon material revealed bundled SWCNTs with few defects and amorphous carbon and revealed that the SWCNTs having diameters of about 0.84-1.60 nm dominated in the product. The product yield of the high-quality SWCNTs was about 63 wt % relative to the weight of the catalyst. The SWCNTs showed the low turn-on field 1.0 V/μm at a current density of 10-8 A/cm2 and the high emission current density of 2.0 mA/cm2 at an applied field of about 3.0 V/μm. The lifetime measurement of SWCNT emitter revealed good emission stability for 20 h during constant DC applied bias. It is considered that the SWCNTs produced by xylene can be used as effective field emitters.

Original languageEnglish
Pages (from-to)12954-12959
Number of pages6
JournalJournal of Physical Chemistry C
Volume111
Issue number35
DOIs
Publication statusPublished - 2007 Sep 6

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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