Broadband electromagnetic absorption of Ti₃C₂T_x MXene/WS₂ composite via constructing two‐dimensional heterostructure

Abstract

With the advent of the 5G era, electronic communications will enable higher production and living standards. However, it cannot be ignored that electromagnetic wave radiation will become an inevitable problem. [1][2][3][4] It is necessary to develop stronger electromagnetic absorption materials (EAMs). On one hand, ceramic-based EAMs play a huge role due to their corrosion resistance, high strength, and low cost. [5][6][7] On the other hand, two-dimensional (2D) materials have unique physical and chemical properties, thus having a wide range of applications in different fields. As a pioneer of 2D materials,

Studying Plasmon Dispersion of MXene for Enhanced Electromagnetic Absorption

“…[ 8 ] This process can be repeated in the laminate architecture of MXene until the penetrated EM waves are competely absorbed. [ 9 ] This EM shielding performance can be further improved by introducing porous structures with partial oxidation in annealed MXene, but the observed increase cannot be fully explained within the framework of existing shielding theories. [ 1b ] These phenomena imply that there must be other dissipation channels in addition to classical reflection and absorption of EM waves.…”

“…[8] This process can be repeated in the laminate architecture of MXene until the penetrated EM waves are competely absorbed. [9] This EM shielding performance can be further improved by introducing porous structures with partial oxidation in annealed MXene, but the observed increase cannot be fully explained within the framework of existing shielding theories. [1b] These phenomena imply that there must be other dissipation channels in addition to classical reflection and absorption of EM waves.One possible explanation is the plasmon-induced EM absorption, which has been observed in MXene [10] as well as metals [11] 2D metal carbides and nitrides (MXene) are promising candidates for electromagnetic (EM) shielding, saturable absorption, thermal therapy, and photocatalysis owing to their excellent EM absorption.…”

2D MXene Ti3C2Tx Enhanced Plasmonic Absorption in Metasurface for Terahertz Shielding

“…The localized field confinement provides enhanced absorption at the resonance frequency, which in turn improves the shielding performance. The achieved shielding in this study is far better than recent investigations [14,16,17,24,25]. In conclusion, the emerging 2D nanomaterial, MXene-based metamaterial is being investigated in the realm of terahertz plasmonics.…”

“…THz shielding is also excellent in 2D materials, which can effectively combine the intrinsic properties [15] with the structural qualities of 2D materials [16]. In the terahertz region, these innovative 2D structures can maximize impedance matching conditions and enable multiple terahertz scattering responses, resulting in high absorption efficiency with active control of shielding performance [17]. MXenes are a new family of 2D materials exhibiting high conductivity [18], high strength [19], ultra-thinness [15], and tunable electromagnetic responses [20] have shown better performance in the terahertz region [19].…”

A freestanding 3D heterophase tungsten disulfide-based aerogel as an ultrathin microwave absorber in the Ku-band

“…To overcome these obstacles, the construction of WS 2 -based hierarchical absorbers through interface engineering has been considered to be an effective strategy. For instance, the Ti 3 C 2 T x MXene/WS 2 endows a maximum RL of −61.06 dB with an effective absorption bandwidth (EAB, ≤−10 dB) of 6.5 GHz as reported by Ren et al 5 Zhang and co-workers also developed excellent MA materials using WS 2 /NiO hybrids that had a thickness of 4.3 mm with a RL of −63.31 dB. 6 Biomass-derived carbon-coated WS 2 core–shell nanostructures exhibit an RL of −51.4 dB at 5.52 GHz.…”