Controllable Synthesis of γ-Fe 2 O 3 Nanotube/Porous rGO Composites and Their Enhanced Microwave Absorption Properties

Shanshan Wang, Qingze Jiao, Xiufeng Liu, Yingchun Xu, Quan Shi, Song Yue, Yun Zhao*, Hongbo Liu, Caihong Feng, Daxin Shi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

77 Citations (Scopus)

Abstract

γ-Fe 2 O 3 nanotube/porous reduced graphene oxide (rGO) composites were prepared using a controllable method. Uniform γ-Fe 2 O 3 nanotubes with a diameter of about 85 nm and a length of about 230 nm are well distributed between porous rGO sheets. Compared with the γ-Fe 2 O 3 nanorod/porous rGO and γ-Fe 2 O 3 nanotube/nonporous rGO, the γ-Fe 2 O 3 nanotube/porous rGO composites with both unique hollow and porous structure show an advantage for the attenuation of microwaves. The appropriate dielectric loss and magnetic loss result in a good impedance matching. The minimum reflection loss of γ-Fe 2 O 3 nanotube/porous rGO composite reaches -34.20 dB with a thickness of 2.0 mm, and the absorption bandwidth is 4.59 GHz. These results reveal that the synthesis of hollow and porous composites is a promising way for getting lightweight microwave materials with high performance.

Original languageEnglish
Pages (from-to)7004-7013
Number of pages10
JournalACS Sustainable Chemistry and Engineering
Volume7
Issue number7
DOIs
Publication statusPublished - 1 Apr 2019

Keywords

  • Microwave-absorbing performance
  • Nanotube
  • Porous composite
  • Reduced graphene oxide
  • γ-Fe O

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