Comparative study of the growth of CNTs on stainless steel with and without the external catalyst

Mazdak Hashempour, Antonello Vicenzo, Massimiliano Bestetti

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Multi-walled carbon nanotubes were synthesized on 316 stainless steel substrate by chemical vapor deposition through two different methods: 1-without use of any external catalyst and using ethylene as the carbon precursor and 2-using ferrocene as an external source of catalyst particles, dissolved in toluene, as the carbon precursor. Carbon nanotubes grown by the two methods were characterized by scanning and transmission electron microscopy and X-ray diffraction methods and were compared subsequently to determine certain characteristics of each method. Good coverage and homogeneity was observed in both cases. However, the carbon layer was thicker and denser in externally catalyzed samples. Two different mechanisms, namely, base and tip modes, were observed for the nanotubes growth, each with particular characteristics stemming from the synthesis methods. Surface nano-features and external catalyst behavior were found to have the dominant role in determining the morphology of carbon filaments in intrinsically and externally catalyzed samples, respectively.

Original languageEnglish
Pages (from-to)21-31
Number of pages11
JournalECS Transactions
Volume58
Issue number24
DOIs
Publication statusPublished - 2013
Externally publishedYes

Fingerprint

Stainless steel
Catalysts
Carbon
Carbon nanotubes
Nanotubes
Toluene
Chemical vapor deposition
Ethylene
Transmission electron microscopy
X ray diffraction
Scanning electron microscopy
Substrates

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Comparative study of the growth of CNTs on stainless steel with and without the external catalyst. / Hashempour, Mazdak; Vicenzo, Antonello; Bestetti, Massimiliano.

In: ECS Transactions, Vol. 58, No. 24, 2013, p. 21-31.

Research output: Contribution to journalArticle

@article{678fcebb11c540a39e3febc1b1717cc2,
title = "Comparative study of the growth of CNTs on stainless steel with and without the external catalyst",
abstract = "Multi-walled carbon nanotubes were synthesized on 316 stainless steel substrate by chemical vapor deposition through two different methods: 1-without use of any external catalyst and using ethylene as the carbon precursor and 2-using ferrocene as an external source of catalyst particles, dissolved in toluene, as the carbon precursor. Carbon nanotubes grown by the two methods were characterized by scanning and transmission electron microscopy and X-ray diffraction methods and were compared subsequently to determine certain characteristics of each method. Good coverage and homogeneity was observed in both cases. However, the carbon layer was thicker and denser in externally catalyzed samples. Two different mechanisms, namely, base and tip modes, were observed for the nanotubes growth, each with particular characteristics stemming from the synthesis methods. Surface nano-features and external catalyst behavior were found to have the dominant role in determining the morphology of carbon filaments in intrinsically and externally catalyzed samples, respectively.",
author = "Mazdak Hashempour and Antonello Vicenzo and Massimiliano Bestetti",
year = "2013",
doi = "10.1149/05824.0021ecst",
language = "English",
volume = "58",
pages = "21--31",
journal = "ECS Transactions",
issn = "1938-5862",
publisher = "Electrochemical Society, Inc.",
number = "24",

}

TY - JOUR

T1 - Comparative study of the growth of CNTs on stainless steel with and without the external catalyst

AU - Hashempour, Mazdak

AU - Vicenzo, Antonello

AU - Bestetti, Massimiliano

PY - 2013

Y1 - 2013

N2 - Multi-walled carbon nanotubes were synthesized on 316 stainless steel substrate by chemical vapor deposition through two different methods: 1-without use of any external catalyst and using ethylene as the carbon precursor and 2-using ferrocene as an external source of catalyst particles, dissolved in toluene, as the carbon precursor. Carbon nanotubes grown by the two methods were characterized by scanning and transmission electron microscopy and X-ray diffraction methods and were compared subsequently to determine certain characteristics of each method. Good coverage and homogeneity was observed in both cases. However, the carbon layer was thicker and denser in externally catalyzed samples. Two different mechanisms, namely, base and tip modes, were observed for the nanotubes growth, each with particular characteristics stemming from the synthesis methods. Surface nano-features and external catalyst behavior were found to have the dominant role in determining the morphology of carbon filaments in intrinsically and externally catalyzed samples, respectively.

AB - Multi-walled carbon nanotubes were synthesized on 316 stainless steel substrate by chemical vapor deposition through two different methods: 1-without use of any external catalyst and using ethylene as the carbon precursor and 2-using ferrocene as an external source of catalyst particles, dissolved in toluene, as the carbon precursor. Carbon nanotubes grown by the two methods were characterized by scanning and transmission electron microscopy and X-ray diffraction methods and were compared subsequently to determine certain characteristics of each method. Good coverage and homogeneity was observed in both cases. However, the carbon layer was thicker and denser in externally catalyzed samples. Two different mechanisms, namely, base and tip modes, were observed for the nanotubes growth, each with particular characteristics stemming from the synthesis methods. Surface nano-features and external catalyst behavior were found to have the dominant role in determining the morphology of carbon filaments in intrinsically and externally catalyzed samples, respectively.

UR - http://www.scopus.com/inward/record.url?scp=84904996858&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84904996858&partnerID=8YFLogxK

U2 - 10.1149/05824.0021ecst

DO - 10.1149/05824.0021ecst

M3 - Article

AN - SCOPUS:84904996858

VL - 58

SP - 21

EP - 31

JO - ECS Transactions

JF - ECS Transactions

SN - 1938-5862

IS - 24

ER -