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 journalArticle

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

Fingerprint

Xylenes
xylene
Single-walled carbon nanotubes (SWCN)
Xylene
Field emission
field emission
carbon nanotubes
Decomposition
decomposition
catalysts
Catalysts
emitters
Current density
current density
carbon
Amorphous carbon
products
Carbon
direct current
life (durability)

ASJC Scopus subject areas

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

Cite this

High-quality single-walled carbon nanotubes synthesized by catalytic decomposition of xylene over Fe-Mo/MgO catalyst and their field emission properties. / Zhang, Hui; Shin, Dong Hoon; Lee, Heon Sang; Lee, Cheol Jin.

In: Journal of Physical Chemistry C, Vol. 111, No. 35, 06.09.2007, p. 12954-12959.

Research output: Contribution to journalArticle

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