Thermal degradation of single-walled carbon nanotubes during alcohol catalytic chemical vapor deposition process

Mohd Asyadi Azam, Mohd Ambri Mohamed, Eiji Shikoh, Akihiko Fujiwara

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

We have grown single-walled carbon nanotubes (SWCNTs) from Co catalyst thin films using the alcohol catalytic chemical vapor deposition (CVD) method for different CVD processing times. The structural properties of the SWCNTs grown have been investigated by Raman spectroscopy with various laser excitations. The growth progressed up to t = 20 min, but the Raman intensity of SWCNTs decreased with increasing CVD processing time. The quality of as-grown SWCNTs also decreased with increasing CVD processing times, similar to the trend for Raman intensity. Raman intensity analysis in the radial breathing mode region shows a relatively wide distribution for SWCNTs grown for all CVD processing times, owing to the variations in growth and burning rates with SWCNT diameter. In this paper, we suggest that Co catalyst poisoning and SWCNT burning occur when the CVD processing time is more than 20 min.

Original languageEnglish
Article number02BA04
JournalJapanese Journal of Applied Physics
Volume49
Issue number2 PART 2
DOIs
Publication statusPublished - 2010
Externally publishedYes

Fingerprint

thermal degradation
Single-walled carbon nanotubes (SWCN)
Chemical vapor deposition
Pyrolysis
alcohols
Alcohols
carbon nanotubes
vapor deposition
Processing
Catalyst poisoning
catalysts
burning rate
Laser excitation
poisoning
breathing
Raman spectroscopy
Structural properties
trends
Thin films
Catalysts

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Thermal degradation of single-walled carbon nanotubes during alcohol catalytic chemical vapor deposition process. / Azam, Mohd Asyadi; Mohamed, Mohd Ambri; Shikoh, Eiji; Fujiwara, Akihiko.

In: Japanese Journal of Applied Physics, Vol. 49, No. 2 PART 2, 02BA04, 2010.

Research output: Contribution to journalArticle

@article{685ffe20e8cf40c3ae807c6a2440bb50,
title = "Thermal degradation of single-walled carbon nanotubes during alcohol catalytic chemical vapor deposition process",
abstract = "We have grown single-walled carbon nanotubes (SWCNTs) from Co catalyst thin films using the alcohol catalytic chemical vapor deposition (CVD) method for different CVD processing times. The structural properties of the SWCNTs grown have been investigated by Raman spectroscopy with various laser excitations. The growth progressed up to t = 20 min, but the Raman intensity of SWCNTs decreased with increasing CVD processing time. The quality of as-grown SWCNTs also decreased with increasing CVD processing times, similar to the trend for Raman intensity. Raman intensity analysis in the radial breathing mode region shows a relatively wide distribution for SWCNTs grown for all CVD processing times, owing to the variations in growth and burning rates with SWCNT diameter. In this paper, we suggest that Co catalyst poisoning and SWCNT burning occur when the CVD processing time is more than 20 min.",
author = "Azam, {Mohd Asyadi} and Mohamed, {Mohd Ambri} and Eiji Shikoh and Akihiko Fujiwara",
year = "2010",
doi = "10.1143/JJAP.49.02BA04",
language = "English",
volume = "49",
journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",
issn = "0021-4922",
publisher = "Japan Society of Applied Physics",
number = "2 PART 2",

}

TY - JOUR

T1 - Thermal degradation of single-walled carbon nanotubes during alcohol catalytic chemical vapor deposition process

AU - Azam, Mohd Asyadi

AU - Mohamed, Mohd Ambri

AU - Shikoh, Eiji

AU - Fujiwara, Akihiko

PY - 2010

Y1 - 2010

N2 - We have grown single-walled carbon nanotubes (SWCNTs) from Co catalyst thin films using the alcohol catalytic chemical vapor deposition (CVD) method for different CVD processing times. The structural properties of the SWCNTs grown have been investigated by Raman spectroscopy with various laser excitations. The growth progressed up to t = 20 min, but the Raman intensity of SWCNTs decreased with increasing CVD processing time. The quality of as-grown SWCNTs also decreased with increasing CVD processing times, similar to the trend for Raman intensity. Raman intensity analysis in the radial breathing mode region shows a relatively wide distribution for SWCNTs grown for all CVD processing times, owing to the variations in growth and burning rates with SWCNT diameter. In this paper, we suggest that Co catalyst poisoning and SWCNT burning occur when the CVD processing time is more than 20 min.

AB - We have grown single-walled carbon nanotubes (SWCNTs) from Co catalyst thin films using the alcohol catalytic chemical vapor deposition (CVD) method for different CVD processing times. The structural properties of the SWCNTs grown have been investigated by Raman spectroscopy with various laser excitations. The growth progressed up to t = 20 min, but the Raman intensity of SWCNTs decreased with increasing CVD processing time. The quality of as-grown SWCNTs also decreased with increasing CVD processing times, similar to the trend for Raman intensity. Raman intensity analysis in the radial breathing mode region shows a relatively wide distribution for SWCNTs grown for all CVD processing times, owing to the variations in growth and burning rates with SWCNT diameter. In this paper, we suggest that Co catalyst poisoning and SWCNT burning occur when the CVD processing time is more than 20 min.

UR - http://www.scopus.com/inward/record.url?scp=79955529008&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79955529008&partnerID=8YFLogxK

U2 - 10.1143/JJAP.49.02BA04

DO - 10.1143/JJAP.49.02BA04

M3 - Article

AN - SCOPUS:79955529008

VL - 49

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

SN - 0021-4922

IS - 2 PART 2

M1 - 02BA04

ER -