Silica gel fabrication of [60]fullerene aggregates and carbon nanotubes utilizing the amphiphilic nature of poly(N-vinylpyrrolidone) as a 'glue'

Masayoshi Asai, Norifumi Fujita, Masahito Sano, Seiji Shinkai

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Sol-gel polycondensation of tetraethoxysilane in the presence of [60]fullerene/poly(N-vinylpyrrolidone) (PVP) composite or single-walled carbon nanotubes (SWNTs)/PVP composite yielded novel silica nanoparticles or silica nanorods, respectively. TEM and SEM observations and IR, UV-VIS and XPS spectroscopic analyses consistently revealed that these novel silica-based superstructures are composed of templates ([60]fullerene or SWNTs), PVP and a thin silica layer. From the silica nanoparticles it was possible to prepare the hollow silica particles by pyrolysis. In the silica nanorods, it was possible to remove PVP and then SWNTs at 500 and 1000°C, respectively, by stepwise pyrolysis. TEM and SEM images of the silica nanrods obtained after removal of PVP showed a hollow structure with SWNTs sticking out of the inner tube, like the lead of an 'automatic pencil'.

Original languageEnglish
Pages (from-to)2145-2149
Number of pages5
JournalJournal of Materials Chemistry
Volume13
Issue number9
DOIs
Publication statusPublished - Sep 1 2003

Fingerprint

Carbon Nanotubes
Glues
Silica Gel
Silica gel
Fullerenes
Silicon Dioxide
Carbon nanotubes
Silica
Fabrication
Single-walled carbon nanotubes (SWCN)
Nanorods
Pyrolysis
Nanoparticles
Transmission electron microscopy
Scanning electron microscopy
fullerene C60
N-vinyl-2-pyrrolidinone
Composite materials
Polycondensation
Sol-gels

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry

Cite this

Silica gel fabrication of [60]fullerene aggregates and carbon nanotubes utilizing the amphiphilic nature of poly(N-vinylpyrrolidone) as a 'glue'. / Asai, Masayoshi; Fujita, Norifumi; Sano, Masahito; Shinkai, Seiji.

In: Journal of Materials Chemistry, Vol. 13, No. 9, 01.09.2003, p. 2145-2149.

Research output: Contribution to journalArticle

Asai, Masayoshi ; Fujita, Norifumi ; Sano, Masahito ; Shinkai, Seiji. / Silica gel fabrication of [60]fullerene aggregates and carbon nanotubes utilizing the amphiphilic nature of poly(N-vinylpyrrolidone) as a 'glue'. In: Journal of Materials Chemistry. 2003 ; Vol. 13, No. 9. pp. 2145-2149.
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