Abstract
Multiwalled carbon-nanotubes have been grown from carbon black by solid-state transformation at the anode of a modified high-temperature arc-furnace without a catalyst. A mechanism for the solid-state transformation of carbon black into nanotubes is proposed. The migration of pentagon and heptagon defects present in carbon black to regions of high tensile-stress is key to the growth mechanism. The growth process can be broken into two stages. The basic mechanism for both stages is the same; only the source of the tensile stress that drives the nanotube growth differs. In the initial stage of growth the necks between carbon-black particles are lengthened into short nanotubes by thermal forces. Electrostatic forces present in the plasma of the high-temperature arc-furnace drive the subsequent extension of the short nanotubes to multiple-micron lengths.
| Original language | English |
|---|---|
| Pages (from-to) | 1625-1634 |
| Number of pages | 10 |
| Journal | Carbon |
| Volume | 41 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2003 |
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Keywords
- A. Carbon black, Carbon nanotubes
- B. Arc discharge
ASJC Scopus subject areas
- Materials Chemistry
Cite this
Mechanism for the growth of multiwalled carbon-nanotubes from carbon black. / Buchholz, D. B.; Doherty, S. P.; Chang, Robert P. H.
In: Carbon, Vol. 41, No. 8, 2003, p. 1625-1634.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Mechanism for the growth of multiwalled carbon-nanotubes from carbon black
AU - Buchholz, D. B.
AU - Doherty, S. P.
AU - Chang, Robert P. H.
PY - 2003
Y1 - 2003
N2 - Multiwalled carbon-nanotubes have been grown from carbon black by solid-state transformation at the anode of a modified high-temperature arc-furnace without a catalyst. A mechanism for the solid-state transformation of carbon black into nanotubes is proposed. The migration of pentagon and heptagon defects present in carbon black to regions of high tensile-stress is key to the growth mechanism. The growth process can be broken into two stages. The basic mechanism for both stages is the same; only the source of the tensile stress that drives the nanotube growth differs. In the initial stage of growth the necks between carbon-black particles are lengthened into short nanotubes by thermal forces. Electrostatic forces present in the plasma of the high-temperature arc-furnace drive the subsequent extension of the short nanotubes to multiple-micron lengths.
AB - Multiwalled carbon-nanotubes have been grown from carbon black by solid-state transformation at the anode of a modified high-temperature arc-furnace without a catalyst. A mechanism for the solid-state transformation of carbon black into nanotubes is proposed. The migration of pentagon and heptagon defects present in carbon black to regions of high tensile-stress is key to the growth mechanism. The growth process can be broken into two stages. The basic mechanism for both stages is the same; only the source of the tensile stress that drives the nanotube growth differs. In the initial stage of growth the necks between carbon-black particles are lengthened into short nanotubes by thermal forces. Electrostatic forces present in the plasma of the high-temperature arc-furnace drive the subsequent extension of the short nanotubes to multiple-micron lengths.
KW - A. Carbon black, Carbon nanotubes
KW - B. Arc discharge
UR - http://www.scopus.com/inward/record.url?scp=0037603127&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037603127&partnerID=8YFLogxK
U2 - 10.1016/S0008-6223(03)00110-6
DO - 10.1016/S0008-6223(03)00110-6
M3 - Article
VL - 41
SP - 1625
EP - 1634
JO - Carbon
JF - Carbon
SN - 0008-6223
IS - 8
ER -