Flame and furnace synthesis of single-walled and multi-walled carbon nanotubes and nanofibers

Randy Lee Vander Wal, Thomas M. Ticich

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

Results are presented for flame synthesis of metal-catalyzed carbon nanotubes. A thermal evaporation technique is used to create the catalyst nanoparticles of Fe or Ni through gas condensation followed by entrainment into the flame. Results are compared with those using a high-temperature tube furnace to provide the reactive environment. Each system yields consistent results, with CO/H2 mixtures generally yielding single-walled nanotubes (SWNTs) with Fe while C2H2/H2 mixtures usually produce multiwalled nanotubes (MWNTs) with Ni. A ternary gas mixture of CO/C2/H2 produces a better yield of nanofibers than either a CO/H2 or C2H2/H2 mixture at 700 °C with Ni catalyst. Our results reflect a combination or possibly a synergy between thermal-plus adsorbate-induced restructuring and adsorbate-particle steric factors affecting particle structure and reactivity.

Original languageEnglish (US)
Pages (from-to)10249-10256
Number of pages8
JournalJournal of Physical Chemistry B
Volume105
Issue number42
DOIs
StatePublished - Oct 25 2001

Fingerprint

Carbon Nanotubes
Carbon nanofibers
Carbon Monoxide
furnaces
flames
Carbon nanotubes
Furnaces
carbon nanotubes
Adsorbates
Nanotubes
nanotubes
synthesis
Flame synthesis
catalysts
Air entrainment
Catalysts
Thermal evaporation
entrainment
Nanofibers
Gas mixtures

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

@article{b8e3199e270f4e1fbbe6a9be6206bf29,
title = "Flame and furnace synthesis of single-walled and multi-walled carbon nanotubes and nanofibers",
abstract = "Results are presented for flame synthesis of metal-catalyzed carbon nanotubes. A thermal evaporation technique is used to create the catalyst nanoparticles of Fe or Ni through gas condensation followed by entrainment into the flame. Results are compared with those using a high-temperature tube furnace to provide the reactive environment. Each system yields consistent results, with CO/H2 mixtures generally yielding single-walled nanotubes (SWNTs) with Fe while C2H2/H2 mixtures usually produce multiwalled nanotubes (MWNTs) with Ni. A ternary gas mixture of CO/C2/H2 produces a better yield of nanofibers than either a CO/H2 or C2H2/H2 mixture at 700 °C with Ni catalyst. Our results reflect a combination or possibly a synergy between thermal-plus adsorbate-induced restructuring and adsorbate-particle steric factors affecting particle structure and reactivity.",
author = "{Vander Wal}, {Randy Lee} and Ticich, {Thomas M.}",
year = "2001",
month = "10",
day = "25",
doi = "10.1021/jp012838u",
language = "English (US)",
volume = "105",
pages = "10249--10256",
journal = "Journal of Physical Chemistry B Materials",
issn = "1520-6106",
publisher = "American Chemical Society",
number = "42",

}

Flame and furnace synthesis of single-walled and multi-walled carbon nanotubes and nanofibers. / Vander Wal, Randy Lee; Ticich, Thomas M.

In: Journal of Physical Chemistry B, Vol. 105, No. 42, 25.10.2001, p. 10249-10256.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Flame and furnace synthesis of single-walled and multi-walled carbon nanotubes and nanofibers

AU - Vander Wal, Randy Lee

AU - Ticich, Thomas M.

PY - 2001/10/25

Y1 - 2001/10/25

N2 - Results are presented for flame synthesis of metal-catalyzed carbon nanotubes. A thermal evaporation technique is used to create the catalyst nanoparticles of Fe or Ni through gas condensation followed by entrainment into the flame. Results are compared with those using a high-temperature tube furnace to provide the reactive environment. Each system yields consistent results, with CO/H2 mixtures generally yielding single-walled nanotubes (SWNTs) with Fe while C2H2/H2 mixtures usually produce multiwalled nanotubes (MWNTs) with Ni. A ternary gas mixture of CO/C2/H2 produces a better yield of nanofibers than either a CO/H2 or C2H2/H2 mixture at 700 °C with Ni catalyst. Our results reflect a combination or possibly a synergy between thermal-plus adsorbate-induced restructuring and adsorbate-particle steric factors affecting particle structure and reactivity.

AB - Results are presented for flame synthesis of metal-catalyzed carbon nanotubes. A thermal evaporation technique is used to create the catalyst nanoparticles of Fe or Ni through gas condensation followed by entrainment into the flame. Results are compared with those using a high-temperature tube furnace to provide the reactive environment. Each system yields consistent results, with CO/H2 mixtures generally yielding single-walled nanotubes (SWNTs) with Fe while C2H2/H2 mixtures usually produce multiwalled nanotubes (MWNTs) with Ni. A ternary gas mixture of CO/C2/H2 produces a better yield of nanofibers than either a CO/H2 or C2H2/H2 mixture at 700 °C with Ni catalyst. Our results reflect a combination or possibly a synergy between thermal-plus adsorbate-induced restructuring and adsorbate-particle steric factors affecting particle structure and reactivity.

UR - http://www.scopus.com/inward/record.url?scp=0035950037&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035950037&partnerID=8YFLogxK

U2 - 10.1021/jp012838u

DO - 10.1021/jp012838u

M3 - Article

VL - 105

SP - 10249

EP - 10256

JO - Journal of Physical Chemistry B Materials

JF - Journal of Physical Chemistry B Materials

SN - 1520-6106

IS - 42

ER -