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- Title
Synthesis of the morphology-controlled porous Fe3O4 nanorods with enhanced microwave absorption performance.
- Authors
Fang, Zhenguo; Wang, Shipeng; Kong, Xiangkai; Liu, Qiangchun
- Abstract
The porous Fe3O4 nanorods have been successfully fabricated via a facile and energy-efficient hydrothermal method based on SiO2-coated β-FeOOH nanorods as a precursor. The effect of SiO2 coating on the phase structure and morphology of as-prepared samples have been systematically characterized by X-ray diffraction, scanning electron microscopy (SEM) and transmission electron microscope (TEM). SEM and TEM results reveal that the Fe3O4 nanorods possess one-dimension configuration and the porous structure. The complex permittivity and permeability of the sample are studied in the frequency range of 2.0–18.0 GHz with 55 wt% of porous Fe3O4 nanorods in paraffin. For the Fe3O4 nanorods, the maximum reflection loss (RL) is − 41.5 dB at 10.24 GHz and the effective absorption bandwidth below − 10 dB can achieve 5.2 GHz (9.28–14.48 GHz) with a matching thickness of 2.4 mm. The enhanced microwave absorption performance is mainly originated from multi-reflection between nanorods and interface polarization, which is related to special rod configuration and the porous structure of the porous Fe3O4 nanorods. This work proposes a promising method to tune the microwave absorption performance via morphology control.
- Subjects
NANORODS; TRANSMISSION electron microscopes; MICROWAVES; ABSORPTION; SCANNING electron microscopy
- Publication
Journal of Materials Science: Materials in Electronics, 2020, Vol 31, Issue 5, p3996
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-020-02947-1