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Carbon nanocones: wall structure and morphology.

Stine Nalum Naess1, Arnljot Elgsaeter1, Geir Helgesen2

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Science and Technology of Advanced Materials
|November 24, 2016
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Summary

Researchers explored carbon nanocones produced via plasma torch. These structures exhibit unique graphite-like inner layers and non-crystalline envelopes, with annealing modifying their composition and atomic ordering.

Keywords:
electron diffractionelectron microscopynanocarbon

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemistry

Background:

  • Large-scale production of conical carbon nanostructures is achievable using plasma torch pyrolysis.
  • The structural characteristics and properties of these carbon cones and discs remain largely underexplored.

Purpose of the Study:

  • To characterize the structure of carbon nanocones and discs produced by plasma torch pyrolysis.
  • To investigate the influence of annealing on the structural features of carbon nanocones.

Main Methods:

  • Transmission electron microscopy (TEM) for structural analysis.
  • Synchrotron X-ray diffraction for atomic ordering.
  • Electron diffraction for structural characterization.

Main Results:

  • Carbon nanocones possess a unique structure with a graphite-like inner layer and a variable non-crystalline envelope.
  • Annealing significantly alters the proportion of the non-crystalline envelope.
  • Well-defined faceting along the cone edge indicates long-range atomic ordering.
  • Observed instances of symmetry breaking, such as dual apexes in nanocones.

Conclusions:

  • The study provides detailed structural insights into plasma-derived carbon nanocones.
  • The findings highlight the potential for tailoring nanocone structure through annealing.
  • The observed structural features offer avenues for further research and applications of these carbon nanostructures.