Large-scale synthesis, electromagnetic and enhanced microwave absorption properties of low helicity carbon nanotubes/Fe nanoparticles hybrid

Xiaosi Qi, Wei Zhong*, Chaoyong Deng, Chak Tong Au, Youwei Du

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

16 Citations (Scopus)

Abstract

Large-scale of low helicity carbon nanotubes filled with Fe nanoparticles have been synthesized by pyrolysis of acetylene at 600°C over Fe 2O3 nanotubes derived from the hydrothermal method. The electromagnetic parameters and microwave absorbing properties were investigated in the 0.5-18 GHz frequency range. A maximum reflection loss (RL) value of the obtained sample is ca. 39.40 dB at 11.14 GHz. The RL value below -10 dB (90% absorption) can be obtained almost in the whole frequency range, and enhanced absorption of electromagnetic wave (reflection loss<-20 dB) was observed in the 7.66-11.14 GHz range (1.2-3.0 mm thickness). The results indicate that the obtained sample exhibits excellent microwave-absorbing ability and is a potential light-weight microwave absorber.

Original languageEnglish
Pages (from-to)374-377
Number of pages4
JournalMaterials Letters
Volume107
DOIs
Publication statusPublished - 15 Sept 2013

Scopus Subject Areas

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

User-Defined Keywords

  • Carbon nanotubes
  • Chemical vapor decomposition
  • Electrical property

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