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Ding, Feng
IBS - Center for Multidimensional Carbon Materials (CMCM)
Research Interests
  • Theoretical methods development for materials studies.
  • The formation mechanism of various carbon materials, from fullerene to carbon nanotube and graphene.
  • Kinetics and thermodynamics of materials growth and etching.
  • The structure, properties and fundamentals of nanomaterials.
  • The experimental synthesis of carbon nanotubes.

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Temperature-dependent selective nucleation of single-walled carbon nanotubes from stabilized catalyst nanoparticles

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Title
Temperature-dependent selective nucleation of single-walled carbon nanotubes from stabilized catalyst nanoparticles
Author
Wu, QianruQiu, LuZhang, LiliLiu, HuapingMa, RuixueXie, PiaoLiu, RunluanHou, PengxiangDing, FengLiu, ChangHe, Maoshuai
Issue Date
2021-11
Publisher
Elsevier BV
Citation
CHEMICAL ENGINEERING JOURNAL
Abstract
The utilization of metal nanoparticles supported on oxides substrate as a catalyst for rational single-walled carbon nanotube (SWCNT) growth is hindered by particle coarsening at high synthesis temperature, despite many empirical advances in supported catalyst design. In this study, a newly developed MgO-supported cobalt (Co-MgO) catalyst affords the formation of well-stabilized Co nanoparticles upon reduction, which is attributed to the electronic metal-support interaction and electrostatic stabilization at the Co-MgO interface. The highly stabilized Co nanoparticles led to the predominant growth of (6, 5) SWCNTs at 700 °C by CO disproportionation and the major SWCNT species was found to be (7, 5) SWCNTs at a reaction temperature of 800 °C. The temperature-dependent selective growth of the two SWCNT species was found, by density functional theory calculation, to be strongly correlated with the change of the relative thermodynamic stability of the SWCNT nuclei in the chirality assigning process at different temperatures.
URI
https://scholarworks.unist.ac.kr/handle/201301/55331
URL
https://www.sciencedirect.com/science/article/pii/S1385894721050610?via%3Dihub
DOI
10.1016/j.cej.2021.133487
ISSN
1385-8947
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MSE_Journal Papers
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