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

doi:10.1016/j.cap.2008.01.002

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 publication › Journal article › Academic research › peer-review

25 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 language	English
Pages (from-to)	144-150
Number of pages	7
Journal	Current Applied Physics
Volume	9
Issue number	1
DOIs	https://doi.org/10.1016/j.cap.2008.01.002
Publication status	Published - 1 Jan 2009
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

General Materials Science
General Physics and Astronomy

More information

10.1016/j.cap.2008.01.002

Cite this

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title = "Carbon nanofibers and multiwalled carbon nanotubes from camphor and their field electron emission",

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.",

keywords = "Camphor, Carbon nanofibers, Carbon nanotubes, Field electron emission, Multiwalled carbon nanotubes, Thermal CVD",

author = "Somani, {Savita P.} and Somani, {Prakash R.} and M. Tanemura and Lau, {Shu Ping} and M. Umeno",

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AU - Somani, Savita P.

AU - Somani, Prakash R.

AU - Tanemura, M.

AU - Lau, Shu Ping

AU - Umeno, M.

PY - 2009/1/1

Y1 - 2009/1/1

N2 - 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.

AB - 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.

KW - Camphor

KW - Carbon nanofibers

KW - Carbon nanotubes

KW - Field electron emission

KW - Multiwalled carbon nanotubes

KW - Thermal CVD

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DO - 10.1016/j.cap.2008.01.002

M3 - Journal article

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JO - Current Applied Physics

JF - Current Applied Physics

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

Abstract

Keywords

ASJC Scopus subject areas

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