Large-scale production of high-quality multi-walled carbon nanotubes: role of precursor gas and of Fe-catalyst support (Articolo in rivista)

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Label
  • Large-scale production of high-quality multi-walled carbon nanotubes: role of precursor gas and of Fe-catalyst support (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • Messina G.; Modafferi V.; Santagelo S.; Tripodi P.; Donato M. G.; Lanza M.; Galvagno S.; Milone C.; Piperopoulos E.; Pistone A. (2008)
    Large-scale production of high-quality multi-walled carbon nanotubes: role of precursor gas and of Fe-catalyst support
    in Diamond and related materials
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Messina G.; Modafferi V.; Santagelo S.; Tripodi P.; Donato M. G.; Lanza M.; Galvagno S.; Milone C.; Piperopoulos E.; Pistone A. (literal)
Pagina inizio
  • 1482 (literal)
Pagina fine
  • 1488 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 17 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • INFM, Dipartimento di Meccanica e Materiali, Facoltà di Ingegneria, Università \"Mediterranea\", Località Feo di Vito, 89060 Reggio Calabria, Italy CNR, Istituto per i Processi Chimico-Fisici Sez. Messina, Via La Farina 237, 98123 Messina, Italy Dipartimento di Chimica Industriale e Ingegneria dei Materiali, Facoltà di Ingegneria, Università di Messina, Contrada di Dio, 98166 Messina, Italy (literal)
Titolo
  • Large-scale production of high-quality multi-walled carbon nanotubes: role of precursor gas and of Fe-catalyst support (literal)
Abstract
  • The crucial role of precursor gas (PG) and of catalyst support (CS) in the growth of multi-walled C nanotubes (MWCNTs) by iron-catalysed chemical vapour deposition (CVD) is evidenced. This is accomplished by comparing structural and morphological properties of MWCNTs synthesised by the use of different PGs (ethane and isobutane) and CSs (silica and alumina). The results of analyses, carried out on catalysts and C deposits by scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), Raman spectroscopy (RS), thermo-gravimetry (TG) and X-ray diffraction (XRD), demonstrate that Al2O3-supported catalysts are more efficient than SiO2-supported ones in decomposing hydrocarbons. The use of i-C4H10 as PG allows reducing Fe-encapsulation and improving yield (YC) and selectivity, so as the largescale production (YCN900 wt.%) of high-quality nanotubes can be operated even at moderate reaction temperature (600 °C) after proper calibration of Fe-load (29 wt.%) and catalyst reduction temperature (500 °C). (literal)
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