Ferromagnetic hierarchical carbon nanofiber bundles derived from natural collagen fibers: truly lightweight and high-performance microwave absorption materials

Abstract

High-performance microwave absorption materials with a broad bandwidth and strong intensity have significant applications in both civil and military areas.

Fe3O4 nanoparticles decorated on a CuS platelet-based sphere: a popcorn chicken-like heterostructure as an ideal material against electromagnetic pollution

“…A variety of studies have been devoted to the synthesis of EA materials to obtain EA materials having properties such as strong absorption capability, wide effective absorption bandwidth, high thermal stability, lightweightedness, and anti-oxidation. [6][7][8] With the development of technology, various strategies have been explored to synthesize functional materials to achieve better EA performance; these materials include metal oxides or suldes, such as ZnO, 9 CoFe 2 O 4 , 10 SnO 2 , 11 CoS, 12 and CuS 13-15 as well as carbon materials such as carbon nanotubes (CNTs), 16,17 graphene or reduced graphene oxide (RGO), 18 carbon bers (CFs), 19 and/or their hybrids. 20,21 Among the many existing materials, heterostructures of magnetic loss-type and dielectric loss-type materials produce great enhancement in EA performance; these materials include Fe 3 32 graphene CuS, 33 and CuS/ ZnS.…”

Biomass carbon derived from pine nut shells decorated with NiO nanoflakes for enhanced microwave absorption properties

“…So it can induce multiple reection and scattering of the electromagnetic wave to enhance the attenuation capacity, and thus exhibit better electromagnetic wave absorption properties. 65,66 In other words, both the porous structure and the long-range cross-linked transmission network are imperative to the excellent microwave absorption performance of the NiO/BPC composite, as that has been proved in the graphene foam systems. 67 To further interpret the dielectric behaviours based on electromagnetic theory, Cole-Cole semicircles of the asprepared samples were analysed.…”

Performance enhanced electromagnetic wave absorber from controllable modification of natural plant fiber

“…16 Wang's group prepared ferromagnetic hierarchical carbon nanober bundles derived from natural collagen bers, apart from the complicated procedure, the starting materials were sundry and expensive. 17 On this occasion, the exploration of a more sustainable strategy to fabricate easy-obtained, low-cost and high-efficiency microwave absorption materials with broad absorbing band, even feasible mass production, is of practical signicance to meet the requirement of ideal EMW absorbers. We pursue the functionalization of materials by various preparation or regulation methods, but at the same time, we tend to ignore the cost of raw materials.…”