NiFe₂O₄ nanoparticles supported on cotton-based carbon fibers and their application as a novel broadband microwave absorbent

Abstract

NiFe2O4 nanoparticles supported on cotton-based carbon fibers exhibited excellent microwave absorption performance in the X-band and Ku-band.

Electromagnetic Absorption and Mechanical Properties of Natural Rubber Composites Based on Conductive Carbon Black and Fe3O4

“…This was described as being due to the increase in Fe 3 O 4 resulting in increased magnetic loss ability values. As mentioned in the literature [ 36 , 37 ], the concept of impedance matching is determined by the relationship between dielectric and magnetic loss ability. CCB exhibits some dielectric loss ability; however, their imaginary complex permeability is too low.…”

Preparation of Ni/C porous fibers derived from jute fibers for high-performance microwave absorption

“…It is worth noting that the two curves of tan d e and tan d m have an opposite trend in the frequency range of 2-18 GHz, and this result can be explained by the coupling and modulation between dielectric behavior and magnetic behavior. 12,46,47 According to Debye theory, the dielectric loss mainly originates from conduction loss and polarization relaxation loss, and the polarization relaxation loss is responsible for the several uctuations of curves of 3 00 and tan d e . 48,49 Seen from the above-mentioned SEM and TEM images in Fig.…”

“…Although some progress has been made in the exploration of carbon-based composite MAMs, the carbon matrix materials used were mainly carbon bers, carbon nanotubes, graphene and metal-organic framework compounds. [10][11][12][13][14][15] The preparation method with cheap raw materials, simple process, and adjustable magnetic content in a wide range is still a challenging topic and difficulty in the research eld of carbon-based MAMs.…”

NiCo@NPC@CF nanocomposites derived from NiCo-MOF/cotton for high-performance electromagnetic wave absorption

“…Among them, cotton is composed of cellulose fibers which usually contain very few inorganic impurities, making them a promising candidate for use with carbon fibers. 17 However, because biomass carbon (BC) materials are usually non-magnetic, the absorption performance of the EM waves is greatly limited by the single EM wave attenuation mechanism and impedance mismatching. 7 Excitingly, it has been reported that introducing magnetic materials into the carbon system, to adjust the complex permittivity and permeability of the absorbent, is an effective method to obtain better impedance matching.…”

“…Among them, cotton is composed of cellulose fibers which usually contain very few inorganic impurities, making them a promising candidate for use with carbon fibers. 17 However, because biomass carbon (BC) materials are usually non-magnetic, the absorption performance of the EM waves is greatly limited by the single EM wave attenuation mechanism and impedance mismatching. 7…”