Controllable synthesis, characterization, and magnetic properties of magnetic nanoparticles encapsulated in carbon nanocages and carbon nanotubes

Xiaosi Qi, Jianle Xu, Wei Zhong*, Chak Tong AU, Youwei Du

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

By controlling the pyrolysis temperature, core/shell materials with Fe 3O4 encapsulated in carbon nanocages (Fe3O 4@CNCs) and Fe encapsulated in carbon nanotubes (Fe@CNTs) were synthesized selectively from acetylene using Fe2O3 nanoparticles as catalyst in chemical vapor deposition. Scanning electron microscopic study showed that the efficiency of generating Fe3O 4@CNCs and Fe@CNTs was high, exceeding 95%. Transmission electron microscopic study confirmed the high selectivity to Fe3O 4@CNCs and Fe@CNTs, with the former having morphology similar to that of the catalyst particles. With Fe3O4 and Fe nanoparticles tightly wrapped in graphitic layers, the obtained Fe 3O4@CNCs and Fe@CNTs materials show high stability and good magnetic properties.

Original languageEnglish
Pages (from-to)12-19
Number of pages8
JournalDiamond and Related Materials
Volume45
DOIs
Publication statusPublished - May 2014

Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Chemistry(all)
  • Mechanical Engineering
  • Materials Chemistry
  • Electrical and Electronic Engineering

User-Defined Keywords

  • Chemical vapor deposition
  • Magnetic properties
  • Morphology
  • Nanostructures

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