In situ observations of catalyst dynamics during surface-bound carbon nanotube nucleation (Articolo in rivista)

Type
Label
  • In situ observations of catalyst dynamics during surface-bound carbon nanotube nucleation (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/nl0624824 (literal)
Alternative label
  • Hofmann, S; Sharma, R; Ducati, C; Du, G; Mattevi, C; Cepek, C; Cantoro, M; Pisana, S; Parvez, A; Cervantes-Sodi, F; Ferrari, AC; Dunin-Borkowski, R; Lizzit, S; Petaccia, L; Goldoni, A; Robertson, J (2007)
    In situ observations of catalyst dynamics during surface-bound carbon nanotube nucleation
    in Nano letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Hofmann, S; Sharma, R; Ducati, C; Du, G; Mattevi, C; Cepek, C; Cantoro, M; Pisana, S; Parvez, A; Cervantes-Sodi, F; Ferrari, AC; Dunin-Borkowski, R; Lizzit, S; Petaccia, L; Goldoni, A; Robertson, J (literal)
Pagina inizio
  • 602 (literal)
Pagina fine
  • 608 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 7 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Stephan Hofmann1*, Renu Sharma2, Caterina Ducati3, Gaohui Du2, Cecilia Mattevi4,5, Cinzia Cepek5, Mirco Cantoro1, Simone Pisana1, Atlus Parvez1, Felipe Cervantes-Sodi1, Andrea C. Ferrari1, Rafal Dunin-Borkowski3, Silvano Lizzit6, Luca Petaccia6, Andrea Goldoni6, John Robertson1 1Department of Engineering, University of Cambridge, Cambridge CB3 0FA, UK 2Center for Solid State Science, Arizona State University, Tempe AZ85287-1704, USA 3Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB2 3QZ, UK 4University of Padova, Dipartimento di Scienze Chimiche,Via Marzolo n.1, I- 335131 Padova, Italy 5Laboratorio Nazionale TASC -CNR-INFM, s.s. 14, Km.163.5 I-34012 Trieste, Italy 6Surface Science Division, Sincrotrone Trieste S.C.p.A., s.s. 14, Km.163.5 I-34012 Trieste, Italy (literal)
Titolo
  • In situ observations of catalyst dynamics during surface-bound carbon nanotube nucleation (literal)
Abstract
  • We present atomic-scale, video-rate environmental transmission electron microscopy and in situ time-resolved X-ray photoelectron spectroscopy of surface-bound catalytic chemical vapor deposition of single-walled carbon nanotubes and nanofibers. We observe that transition metal catalyst nanoparticles on SiOx support show crystalline lattice fringe contrast and high deformability before and during nanotube formation. A single-walled carbon nanotube nucleates by lift-off of a carbon cap. Cap stabilization and nanotube growth involve the dynamic reshaping of the catalyst nanocrystal itself. For a carbon nanofiber, the graphene layer stacking is determined by the successive elongation and contraction of the catalyst nanoparticle at its tip. (literal)
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