Flower-like 1T/2H-MoS₂@α-Fe₂O₃ with enhanced electromagnetic wave absorption capabilities in the low frequency range

Abstract

In this work, we designed the flower-like structure of 1T/2H-MoS2@α-Fe2O3 nanocomposites with high-efficiency microwave absorption, in which the α-Fe2O3 microdrums are attached to the surface of 1T/2H-MoS2 constituting a special...

Constructing multi-interface-structured FeNi/Fe2O3@Al2O3@C rod-like nanocomposites for superior microwave-absorption performance

“…As shown in figure 7(b), the 833 sample exhibits a thickness stability of RL m ; that is, the RL m exceeds −10 dB at 1.6-10 mm and −20 dB at 1.8-10 mm. Meanwhile, the RL m value of the 811 sample exceeds −10 dB at 1.3-10 mm, which is superior to those in previous works [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32]. The comparison exhibits that constructing multi-interfaces is a new strategy for obtaining microwave-absorbing materials with the merits of being strong, wide, and thin.…”

“…Nonmagnetic Al 2 O 3 can induce a diluted magnetic effect, which reduces the magnetic loss capability. Fe 2 O 3 , a high temperature-resistant semiconductor, has weak ferromagnetism at room temperature and a low real part (3)(4)(5) of permittivity, which facilitates adjusting impedance matching [24,25]. To improve magnetic loss ability, an FeNi alloy is a potential candidate.…”

MoS2-Based Nanocomposites for Microwave Absorption: A Review

“…Recently, Wu et al 113 have designed the flower-like structure of the MoS 2 @α-Fe 2 O 3 nanocomposites, and they have declared that the α-Fe 2 O 3 microdrums play a significant, constructive role in the dielectric properties and impedance matching characteristics of the nanocomposites. In particular, the optimum RL value reaches −61.18 dB, and the bandwidth absorption is achieved at 4.68 GHz.…”

“…SEM images of (a–c) Fe 2 O 3 and 1T/2H-MoS 2 @α-Fe 2 O 3 composites. Reproduced with permission from ref . Copyright 2023 The Royal Society of Chemistry.…”

Research status and future perspectives of low dimensional electromagnetic wave absorption materials

“…Abundant electrochemical active sites, multiphase structure, and high conductivity endow NbS 2 to realize excellent EMW absorption performance, where the 1T/2H interfaces facilitate the dipole polarization, and the mixture of metallic and semiconductive phases enhance the electron transfer. 105,106 The multiple interlaced NbS 2 nanosheets also provide diverse attenuation pathways and promote the electron hopping between adjacent NbS 2 nanosheets.…”