Dispersion of metal nanoparticles for aligned carbon nanotube arrays

Hiroki Ago, Toshiki Komatsu, Satoshi Ohshima, Yasunori Kuriki, Motoo Yumura

Research output: Contribution to journalArticle

110 Citations (Scopus)

Abstract

We report that Co metal nanoparticles (an average diameter of 4 nm) chemically synthesized by a reverse micelle method catalyzes the growth of multiwall carbon nanotubes (MWNTs) aligned perpendicular to a substrate. The surface of the nanoparticles is covered with surfactants so that the nanoparticles can be dispersed in organic solvent. The dispersion of the nanoparticles was cast directly onto a plane Si substrate for thermal pyrolysis of acetylene. We have found that the pretreatment of the metal nanoparticles with hydrogen sulfide before the pyrolysis straightens the MWNTs, suggesting sulfurization of the nanoparticle catalyst plays an important role in regular growth of the MWNTs. The dispersion of the nanoparticles offers a conventional and processible approach to synthesize large area aligned MWNT arrays.

Original languageEnglish
Pages (from-to)79-81
Number of pages3
JournalApplied Physics Letters
Volume77
Issue number1
DOIs
Publication statusPublished - Jul 3 2000

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carbon nanotubes
nanoparticles
metals
pyrolysis
hydrogen sulfide
acetylene
pretreatment
casts
micelles
surfactants
catalysts

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Dispersion of metal nanoparticles for aligned carbon nanotube arrays. / Ago, Hiroki; Komatsu, Toshiki; Ohshima, Satoshi; Kuriki, Yasunori; Yumura, Motoo.

In: Applied Physics Letters, Vol. 77, No. 1, 03.07.2000, p. 79-81.

Research output: Contribution to journalArticle

Ago, H, Komatsu, T, Ohshima, S, Kuriki, Y & Yumura, M 2000, 'Dispersion of metal nanoparticles for aligned carbon nanotube arrays', Applied Physics Letters, vol. 77, no. 1, pp. 79-81. https://doi.org/10.1063/1.126883
Ago, Hiroki ; Komatsu, Toshiki ; Ohshima, Satoshi ; Kuriki, Yasunori ; Yumura, Motoo. / Dispersion of metal nanoparticles for aligned carbon nanotube arrays. In: Applied Physics Letters. 2000 ; Vol. 77, No. 1. pp. 79-81.
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