The one-pot syntheses of Fe@(C, N) nanocapsules for electromagnetic absorption at gigahertz

Dandan Han, Shucong Xu, Siu Wing Or, Siu Lau Ho, Bao Liu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)


Fe@(C, N) nanocapsules with Fe nanoparticles as the core and N-doped onion-like carbon as the shell are synthesized by the arc-discharge method. The complex permittivity, dielectric loss and microwave absorption properties of the Fe@(C, N) nanocapsules are improved by the doping of N. Compared with Fe@C nanocapsules, Fe@(C, N) nanocapsules exhibit the thinner thickness for the same effective absorbing band width, and the absorption peaks of the Fe@(C, N) nanocapsules at the same thickness shift to a lower frequency, ascribed to the large amount of defects from the doping of N.
Original languageEnglish
Pages (from-to)69-72
Number of pages4
JournalMaterials Letters
Publication statusPublished - 1 Jul 2017


  • Carbon materials
  • Core-shell
  • Microwave absorption properties
  • Nanocomposites

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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