Synthesis and evaluation of microwave absorption properties of Fe3O4/Halloysite/polypyrrole nanocomposites. (1st September 2020)

• Record Type: Journal Article
• Authors: Maleki, Sajjad Tabar; Babamoradi, Mohsen; Hajizadeh, Zoleikha; Maleki, Ali; Rouhi, Mojtaba
• Is Part Of: Micro & nano letters. Volume 15:Number 11(2020)
• Page Start: 723
• Page End: 727
• Publication Date: 2020-09-01
• Subjects: 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; Nanotechnology -- Periodicals; Nanostructures -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1049/mnl.2020.0165
• Languages: English
• ISSNs: 1750-0443

Abstract

Abstract : The Fe3 O4 nanoparticles and Fe3 O4 /Halloysite nanotubes (HNTs) were synthesised by the co‐precipitation method and Fe3 O4 /HNTs/polypyrrole (PPy) nanocomposites were synthesised by in situ polymerisation of pyrrole monomers on the surface of the Fe3 O4 /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 Fe3 O4 /HNTs/PPy nanocomposite exhibits a saturated magnetisation of 6.7 emu/g. The microwave absorption properties of Fe3 O4 /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.