Tailoring Microwave Electromagnetic Responses in Ti₃C₂T_x MXene with Fe₃O₄ Nanoparticle Decoration via a Solvothermal Method

Abstract

Electromagnetic interference originated from communication equipment and portable electronic devices and has become a potential threat to human health and the environment. In this experiment, we successfully prepared a novel two-dimensional (2D) Ti3C2T x /Fe3O4 nanoparticle composite with a simple solvothermal reaction. The magnetic Fe3O4 nanoparticles are homogeneously distributed on both the surface and interlayers of Ti3C2T x , forming a typical hierarchical structure. The dielectric loss of the as-synthesized 2D nanocomposites can be attributed to the strong magnetic loss caused by Fe3O4 nanoparticles as well as the conductive loss originated from Ti3C2 MXene. The achieved excellent electromagnetic wave absorption performance was −50.18 dB at 10.18 GHz with an absorber thickness of only 1.7 mm. Meanwhile, the effective absorption bandwidth of the composite with 30 wt % Fe3O4 loading reached at 3.2 GHz (1.3 mm). We believe that the outstanding microwave absorption performance of Ti3C2T x /Fe3O4 composites with the wide-band and thin-thickness characteristics will provide a strategy to design microwave absorbers.

Gradient Multilayer Design of Ti3C2Tx MXene Nanocomposite for Strong and Broadband Microwave Absorption

“…[ 1–4 ] To address these problems, large efforts have been devoted to develop EM absorbing materials with light weight, thin thickness, strong absorbing ability, and broad absorbing bandwidth. [ 5–9 ]…”

“…[1][2][3][4] To address these problems, large efforts have been devoted to develop EM absorbing materials with light weight, thin thickness, strong absorbing ability, and broad absorbing bandwidth. [5][6][7][8][9] EM absorbing materials require good impedance matching to allow EM wave going inside of material and strong lossy ability to dissipate it. Unfortunately, good impedance matching and strong lossy ability are a contradictory pair.…”

“…Current researches mostly focus on the microstructure design of EM absorbing agent, which is homogeneously mixed with paraffin or resin to form a uniform EM absorber. [1,6,7,[16][17][18][19][20][21] For example, polypyrrole microspheres were wrapped by polyaniline to form the core-shell microstructure, but simply mixed with paraffin to build a uniform absorber. [20] A novel seed-germination-like microstructure was designed to enhance interface polarization and magnetic loss, which was also blended with paraffin to form an even EM absorber.…”

Determining the Actual Composition of Nb5+–Ni2+ Codoped Barium Ferrites to Controllably Regulate the Microwave Absorbing Properties

“…It makes our daily life more convenient while also triggers a serious issue electromagnetic interference (EMI). Moreover, the demands of antiradar coating for military equipment such as aircraft become more severe due to the improvement of radar systems. − Recently, to relieve the ever-increasing pressure on environment and improve the stealth capability of military equipment, more and more research on improvement of microwave absorption properties of the materials has been undertaken. − …”

Tunable electromagnetic properties of Ti3C2Tx/rGO foams decorated with NiO particles

“…Magnetic loss materials or composites such as ferrite 2,3 and magnetized MXene 4–6 have been reported to exhibit enhanced microwave absorption performance. Another strategy is to fabricate these materials into hierarchical, 7,8 hollow, 9 and core–shell structures 10 thus providing propagating path for the electromagnetic waves.…”