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 language | English |
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Pages (from-to) | 7004-7013 |
Number of pages | 10 |
Journal | ACS Sustainable Chemistry and Engineering |
Volume | 7 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1 Apr 2019 |
Keywords
- Microwave-absorbing performance
- Nanotube
- Porous composite
- Reduced graphene oxide
- γ-Fe O