Vapor diffusion synthesis of rugby-shaped CoFe2O4/graphene composites as absorbing materials

Shenli Zhang, Qingze Jiao, Ju Hu, Jingjing Li, Yun Zhao*, Hansheng Li, Qin Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)

Abstract

Rugby-shaped CoFe2O4/graphene composites were synthesized using a vapor diffusion method in combination with calcination. The morphologies and structures of the products were characterized by field emission scanning electron microscopy, X-ray diffractometer, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The magnetic and electromagnetic parameters were measured using a vibrating sample magnetometer and a vector network analyzer, respectively. Results show that rugby-shaped CoFe2O4 particles are distributed on graphene sheets. A minimum reflection loss (RL) of -39.0 dB is observed at 10.9 GHz for the sample with a thickness of 2.0 mm, and the effective absorption frequency (RL < -10 dB) ranges from 9.6 to 14.3 GHz, indicating the excellent microwave absorption performance of the products. The absorbing performance of the CoFe2O4 rugbies/graphene composites is better than that of the CoFe2O4 nanoparticles/graphene composites.

Original languageEnglish
Pages (from-to)195-201
Number of pages7
JournalJournal of Alloys and Compounds
Volume630
DOIs
Publication statusPublished - 5 May 2015

Keywords

  • Absorbing performance
  • Cobalt ferrite
  • Graphene
  • Rugby shape
  • Vapor diffusion method

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