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

doi:10.1021/jp071948j

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

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

15 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 language	English
Pages (from-to)	12954-12959
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	111
Issue number	35
DOIs	https://doi.org/10.1021/jp071948j
Publication status	Published - 2007 Sept 6

ASJC Scopus subject areas

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

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10.1021/jp071948j

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

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.",

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T1 - High-quality single-walled carbon nanotubes synthesized by catalytic decomposition of xylene over Fe-Mo/MgO catalyst and their field emission properties

AU - Zhang, Hui

AU - Shin, Dong Hoon

AU - Lee, Heon Sang

AU - Lee, Cheol Jin

PY - 2007/9/6

Y1 - 2007/9/6

N2 - 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.

AB - 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.

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

Abstract

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