Three-dimensional lightweight melamine foams modified by MXene sheets and CoNi alloys towards multifunctional microwave absorption  

作　　者：Nannan Wu Zhengying Shen Yitao Ma Zhizheng Wu Chuanxin Hou Sijie Guo Jian Tian Jiurong Liu 

机构地区：[1]School of Material Science and Engineering,Shandong University of Science and Technology,Qingdao 266590,China [2]School of Mathematics and Systems Science,Shandong University of Science and Technology,Qingdao 266590,China [3]School of Environmental and Material Engineering,Yantai University,Yantai 264005,China [4]Department of Chemical&Biomolecular Engineering,University of Tennessee,Knoxville,TN 37996,USA [5]Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials,Ministry of Education and School of Materials Science and Engineering,Shandong University,Jinan 250061,China

出　　处：《Nano Research》2025年第2期377-389,共13页纳米研究(英文版)

基　　金：The authors acknowledge the support from Natural Science Foundation of Shandong Province(No.ZR2021QE164);research fund of Shandong University of Science and Technology.

摘　　要：Taking the increasing issue of electromagnetic waves(EMW)pollution and the necessity for applications in extreme environments,there is a pressing requirement to create multifunctional microwave absorption materials(MAMs)to meet the current challenges.In this work,we achieved the successful combination of MXene sheets and metal organic framework(MOFs)derived CoNi@C magnetic alloys onto the three dimensional(3D)melamine foam(MF)skeleton using vacuum impregnation and electrostatic self-assembly techniques.The obtained MF@MXene/CoNi@C composite foams achieved outstanding MA performance,with an optimal reflection loss(RL)value of–24.1 dB and a maximum effective absorption bandwidth(EAB)of 6.88 GHz at a thickness of 1.68 mm,effectively covering the whole Ku band.The superior MA performance is ascribed to the composite foams’multi-component architecture,distinctive 3D porous structure,and the synergistic impact of multiple loss mechanisms.Moreover,the MF@MXene/CoNi@C composite foams demonstrate exceptional photothermal conversion,thermal insulation,and infrared stealth capabilities,effectively coping with the demands of applications in extreme environments.This work serves as a valuable resource and source of inspiration for the development of lightweight broadband,multifunctional efficient MAMs.

关 键 词：MULTIFUNCTIONAL microwave absorption MXene thermal insulation infrared stealth 

分 类 号：TB34[一般工业技术—材料科学与工程]