A robust CoxMg1-xO catalyst for predominantly growing (6, 5) single-walled carbon nanotubes

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

Organisaatiot

  • Qingdao University of Science and Technology
  • Shandong University of Science and Technology
  • Huaihai Institute of Technology
  • Jiangsu University of Science and Technology
  • University of Cologne
  • Moscow Engineering Physics Institute
  • RAS - General Physics Institute
  • Moscow Institute of Physics and Technology

Kuvaus

Chirality-controlled growth of single-walled carbon nanotubes (SWCNTs) by chemical vapor deposition (CVD) is one of the most challenging tasks in carbon nanotube synthesis field. During CVD growth, the catalyst plays crucial roles in governing SWCNT nucleation thermodynamics as well as growth kinetics. However, the performances of catalyst are generally sensitive to the metal loading amount in the catalyst and the reaction conditions, like the partial pressure of carbon source and the reaction time. In this work, we have systematically investigated a robust CoxMg1-xO solid solution, which can predominantly yield (6, 5) SWCNTs in a wide range of Co concentration, with a diversity of CO concentrations or a broad-ranging reaction time. Besides, the effect of reaction temperature on SWCNT chirality distribution is demonstrated, the mechanism of which is clarified with the assistance of environmental transmission electron microscopy. Finally, the chirality distribution of SWCNTs grown using CH4 as the carbon source is presented. The effects of carbon sources are discussed in view of SWCNT growth mode.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut389-395
Sivumäärä7
JulkaisuCarbon
Vuosikerta153
TilaJulkaistu - 1 marraskuuta 2019
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 37149234