四氧化三铁改性还原氧化石墨烯的制备及其电磁波吸收性能

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中图分类号：TB332文献标志码：A

文章编号：1673-3851（2025）09-0605-12

Reference Format： TU Mingwei，GAO Shuang，XIE Jiaqi，et al.Preparation and electromagnetic wave absorption properties of reduced graphene oxide modified with Fe3O4 [Jl.Journal of Zhejiang Sci-Tech University，2025，53（5） ：605-616.

Preparation and electromagnetic wave absorption properties of reduced graphene oxide modified with Fe3O4

TU Mingwei ，GAO Shuang，XIE Jiaqi ，LU Xin ，FU Yaqin （School of Materials Science and Engineering， Zhejiang Sci-Tech University， Hangzhou ，China）

Abstract： To optimize the impedance matching of graphene and improve its absorption performance of electromagnetic wave， Fe3O4 -modified reduced graphene oxide （ Fe3O4/rGO ） was prepared by using graphene oxide （GO） and iron nitrate as precursors and impregnating annealing method to disperse Fe3+ between GO layers through electrostatic interaction. When graphene oxide was reduced， Fe3+ was converted into Fe3O4 nanoparticles. The morphology and crystal structure of Fe3O4/rGO were characterized by scanning electron microscopy， transmission electron microscopy，X-ray diffraction analyzer，and X-ray photoelectron spectroscopy，and the electromagnetic parameters of Fe3O4/rGO were tested by vector network analyzer. The results showed that the impedance matching rate of Fe3O4/rGO- 12N sample is closer to 1，the minimum reflection loss of -58. 30 dB （ ⟨13.85GHz ， 2.68mm ），and an effective absorption bandwidth of 7.05GHz （10. 95-18. OO GHz）. The excellent absorption performance of （20 Fe3O4/rGO is attributed to its multi-polarization effect and good impedance matching characteristics. The results of this article provide an effective method for optimizing graphene impedance matching.

Key words： reduced graphene oxide; Fe3O4 nanoparticles； interfacial polarization； impedancematching;absorbing material

0 引言

随着电子信息技术的飞速发展，大量电子设备给人们的生产生活带来了极大便利[1；但这些电子设备在运行过程中产生的电磁辐射，不仅可能危害人体健康，而且还可能对通讯和导航等设备造成强干扰甚至引发灾难性事故[2]。（剩余15812字）