Tunable Interlayer Spacings Ti3c2tx Mxene@Ni for Enhanced Electromagnetic Microwave Absorption

作     者：Song, Jingyu Shen, Yongqian Zhang, Guibin Sun, Mingxuan Han, Mengyao Du, Xueyan 

作者机构：School of Materials Science & Engineering State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of Technology Lanzhou730050 China Shouhang Hi-TechEnergy Technology Co. Ltd. Lanzhou730000 China 

出 版 物：《SSRN》 

年 卷 期：2024年

核心收录：

主　　题：Welding 

摘      要：While two-dimensional lamellar materials, specifically Ti3C2Tx MXenes, have shown great promise as wave-absorbing materials, the precise design of interlayer spacing poses a persistent challenge. In this study, Ti3C2 layers with adjustable interlayer spacings were crafted using a straightforward molecular welding technique. Through the incorporation of Ni nanoparticles onto the Ti3C2 layers using a combination of simple mechanical stirring and carbonation reactions, we successfully developed MXene@Ni composites featuring a distinct lamellar structure. A uniform dispersion of Ni nanoparticles on the surface of the Ti3C2 nanosheets was found with some of the nanoparticles intercalated into the layers. The MXene@Ni composites exhibited a maximum reflection loss (RL) value of −42.3 dB at 12.3 GHz, accompanied by an impressive effective absorption bandwidth (EAB) of 5.6 GHz. This outstanding absorption performance could be attributed to various factors, including the dielectric loss of the Ti3C2 lamellae, reflections and scattering of multiphase heterostructures, the magnetic loss of the Ni nanoparticles, and their synergistic attenuation. Furthermore, Ni nanoparticles with high electrical conductivity induced vortex currents under the alternating influence of electromagnetic waves (EMWs), resulting in a substantial depletion. This study introduces an innovative approach for synthesizing MXene@Ni composites with tunable interlayer spacing, showing their potential for applications in microwave absorption (MA). © 2024, The Authors. All rights reserved.