Growth modes and chiral selectivity of single-walled carbon nanotubes

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

Organisaatiot

  • Qingdao University of Science and Technology
  • Shandong University of Science and Technology
  • CNRS
  • ONERA-CNRS

Kuvaus

Chemical vapor deposition synthesis of single-walled carbon nanotubes, using an Fe catalyst, and alternating methane and carbon monoxide as carbon feedstocks, leads to the reversible formation of junctions between tubes of different diameters. Combined with an atomistic modeling of the tube/catalyst interface, this shows that the ratio of diameters of the tube and its seeding particle, denoting the growth mode, depends on the carbon fraction inside the catalyst. With carbon monoxide, nanoparticles are strongly carbon enriched, and tend to dewet the tube, in a perpendicular growth mode. Cross-checking our results with the available reports from the literature of the last decade strongly suggests that these latter conditions should favor the near armchair chiral selectivity observed empirically.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut6744-6750
Sivumäärä7
JulkaisuNanoscale
Vuosikerta10
Numero14
TilaJulkaistu - 14 huhtikuuta 2018
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 19084361