Flame synthesis of Fe catalyzed single-walled carbon nanotubes and Ni catalyzed nanofibers: Growth mechanisms and consequences

Randall L. Vander Wal; Lee J. Hall

doi:10.1016/S0009-2614(01)01198-8

Flame synthesis of Fe catalyzed single-walled carbon nanotubes and Ni catalyzed nanofibers: Growth mechanisms and consequences

Randall L. Vander Wal
, Lee J. Hall

Research output: Contribution to journal › Article › peer-review

62 Scopus citations

Abstract

Flame synthesis of single-walled carbon nanotubes and nanofibers is demonstrated using a pyrolysis flame configuration. Fe reacts preferentially with CO/H₂/He mixtures to produce single-walled nanotubes (SWNTs). In contrast, Ni reacts preferentially with C₂H₂/H₂/He mixtures to yield nanofibers. Both catalyst metals exhibit a marked size dependent reactivity towards these reactant gas mixtures. The yarmulke mechanism and a carbon solvation/diffusion/precipitation account for the different catalyzed products; SWNTs and nanofibers, respectively. Consequences of the size dependent reactivities of Fe and Ni nanoparticles and the respective growth mechanisms for the SWNTs and nanofibers are discussed.

Original language	English (US)
Pages (from-to)	178-184
Number of pages	7
Journal	Chemical Physics Letters
Volume	349
Issue number	3-4
DOIs	https://doi.org/10.1016/S0009-2614(01)01198-8
State	Published - Nov 30 2001

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1016/S0009-2614(01)01198-8

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@article{8a0a817972644d37b07765ac8ffcc7a6,

title = "Flame synthesis of Fe catalyzed single-walled carbon nanotubes and Ni catalyzed nanofibers: Growth mechanisms and consequences",

abstract = "Flame synthesis of single-walled carbon nanotubes and nanofibers is demonstrated using a pyrolysis flame configuration. Fe reacts preferentially with CO/H2/He mixtures to produce single-walled nanotubes (SWNTs). In contrast, Ni reacts preferentially with C2H2/H2/He mixtures to yield nanofibers. Both catalyst metals exhibit a marked size dependent reactivity towards these reactant gas mixtures. The yarmulke mechanism and a carbon solvation/diffusion/precipitation account for the different catalyzed products; SWNTs and nanofibers, respectively. Consequences of the size dependent reactivities of Fe and Ni nanoparticles and the respective growth mechanisms for the SWNTs and nanofibers are discussed.",

author = "\{Vander Wal\}, \{Randall L.\} and Hall, \{Lee J.\}",

note = "Funding Information: This work was supported by a NASA Strategic Research Fund (SRF) and administered through NASA cooperative agreement NAC3-544 with The National Center for Microgravity Research on Fluids and Combustion (NCMR) at The NASA-Glenn Research Center. The authors thank David R. Hull for the HRTEM imaging and invaluable feedback on the results.",

year = "2001",

month = nov,

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doi = "10.1016/S0009-2614(01)01198-8",

language = "English (US)",

volume = "349",

pages = "178--184",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier B.V.",

number = "3-4",

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TY - JOUR

T1 - Flame synthesis of Fe catalyzed single-walled carbon nanotubes and Ni catalyzed nanofibers

T2 - Growth mechanisms and consequences

AU - Vander Wal, Randall L.

AU - Hall, Lee J.

N1 - Funding Information: This work was supported by a NASA Strategic Research Fund (SRF) and administered through NASA cooperative agreement NAC3-544 with The National Center for Microgravity Research on Fluids and Combustion (NCMR) at The NASA-Glenn Research Center. The authors thank David R. Hull for the HRTEM imaging and invaluable feedback on the results.

PY - 2001/11/30

Y1 - 2001/11/30

N2 - Flame synthesis of single-walled carbon nanotubes and nanofibers is demonstrated using a pyrolysis flame configuration. Fe reacts preferentially with CO/H2/He mixtures to produce single-walled nanotubes (SWNTs). In contrast, Ni reacts preferentially with C2H2/H2/He mixtures to yield nanofibers. Both catalyst metals exhibit a marked size dependent reactivity towards these reactant gas mixtures. The yarmulke mechanism and a carbon solvation/diffusion/precipitation account for the different catalyzed products; SWNTs and nanofibers, respectively. Consequences of the size dependent reactivities of Fe and Ni nanoparticles and the respective growth mechanisms for the SWNTs and nanofibers are discussed.

AB - Flame synthesis of single-walled carbon nanotubes and nanofibers is demonstrated using a pyrolysis flame configuration. Fe reacts preferentially with CO/H2/He mixtures to produce single-walled nanotubes (SWNTs). In contrast, Ni reacts preferentially with C2H2/H2/He mixtures to yield nanofibers. Both catalyst metals exhibit a marked size dependent reactivity towards these reactant gas mixtures. The yarmulke mechanism and a carbon solvation/diffusion/precipitation account for the different catalyzed products; SWNTs and nanofibers, respectively. Consequences of the size dependent reactivities of Fe and Ni nanoparticles and the respective growth mechanisms for the SWNTs and nanofibers are discussed.

UR - https://www.scopus.com/pages/publications/0000866153

UR - https://www.scopus.com/pages/publications/0000866153#tab=citedBy

U2 - 10.1016/S0009-2614(01)01198-8

DO - 10.1016/S0009-2614(01)01198-8

M3 - Article

AN - SCOPUS:0000866153

SN - 0009-2614

VL - 349

SP - 178

EP - 184

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 3-4

ER -

Flame synthesis of Fe catalyzed single-walled carbon nanotubes and Ni catalyzed nanofibers: Growth mechanisms and consequences

Abstract

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