Synthesis and evaluation of microwave absorption properties of Fe 3 O 4 /Halloysite/polypyrrole nanocomposites

Micro & nano letters

article

Sajjad Tabar Maleki¹  Mohsen Babamoradi¹  Zoleikha Hajizadeh²  Ali Maleki²  Mojtaba Rouhi¹ 

[1] Department of Physics, Iran University of Science and Technology;Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology

关键词: scanning electron microscopy;    precipitation (physical chemistry);    filled polymers;    nanoparticles;    polymerisation;    nanomagnetics;    nanocomposites;    nanotubes;    nanofabrication;    iron compounds;    Fourier transform infrared spectra;    saturation magnetisation;    microwave absorption;    nanoparticles;    microwave absorption;    Fe3O4-halloysite-polypyrrole nanocomposites;    halloysite nanotubes;    co-precipitation method;    polymerisation;    pyrrole monomers;    scanning electron microscopy;    Fourier transform infrared spectra;    saturated magnetisation;    reflection loss;    frequency 11.0 GHz;    Fe3O4;   

DOI  :  10.1049/mnl.2020.0165

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

The Fe 3 O 4 nanoparticles and Fe 3 O 4 /Halloysite nanotubes (HNTs) were synthesised by the co-precipitation method and Fe 3 O 4 /HNTs/polypyrrole (PPy) nanocomposites were synthesised by in situ polymerisation of pyrrole monomers on the surface of the Fe 3 O 4 /HNTs. The scanning electron microscopy images showed the uniform structure of nanocomposites. The Fourier transform infrared spectra revealed the characteristic peaks of Halloysite and PPy. The Fe 3 O 4 /HNTs/PPy nanocomposite exhibits a saturated magnetisation of 6.7 emu/g. The microwave absorption properties of Fe 3 O 4 /HNTs/PPy nanocomposites were investigated in the 8–12 GHz (X-band) range. The value of the minimum reflection loss was obtained − 26.2 dB at 11 GHz for the 3 mm thickness nanocomposite. The results showed the absorbing bandwidth below − 10 dB was broadened to 2.3 GHz.

【 授权许可】

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