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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

Authors
Zhang, HuiShin, Dong HoonLee, Heon SangLee, Cheol Jin
Issue Date
6-Sep-2007
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF PHYSICAL CHEMISTRY C, v.111, no.35, pp.12954 - 12959
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF PHYSICAL CHEMISTRY C
Volume
111
Number
35
Start Page
12954
End Page
12959
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/125709
DOI
10.1021/jp071948j
ISSN
1932-7447
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/,mu m at a current density of 10-8 A/cm(2) and the high emission current density of 2.0 mA/cm(2) at an applied field of about 3.0 V/mu m. 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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