Titre du document / Document title
Effect of hydrogen on the growth and morphology of single wall carbon nanotubes synthesized on a Fe-Mo/MgO catalytic system
Auteur(s) / Author(s)BIRIS Alexandru R.
BIRIS Alexandru S.
Résumé / Abstract
Single wall carbon nanotubes were synthesized from thermal pyrolysis of methane on a Fe-Mo/MgO catalyst by radio frequency catalytic chemical vapor deposition (RF-CVD) using argon as a carrier gas. Controlled amounts of hydrogen (H2
= 0-1 v/v) were introduced in separate experiments along with the carbon source. The properties and morphology of the synthesized single wall carbon nanotubes were monitored by transmission electron microscopy, Raman scattering, and thermogravimetric analysis. The nanotubes with the highest crystallinity were obtained with H2
= 0.6. By monitoring the Radial Breathing Modes present in the Raman spectra of the single-wall carbon nanotube samples, the variation of the structural and morphological properties of the carbon nanotubes with the flow level of hydrogen, reflect changes of the catalyst systems induced by the presence of hydrogen.
Revue / Journal TitlePhysics letters. A
Source / Source
2008, vol. 372, no
17, pp. 3051-3057 [7 page(s) (article)]
Langue / Language
Editeur / Publisher
Elsevier, Kidlington, ROYAUME-UNI
Mots-clés d'auteur / Author Keywords
Localisation / Location
INIST-CNRS, Cote INIST : 9425 A, 35400017262693.0200
Nº notice refdoc (ud4) : 20251675