Anchoring 1T-MoS_(2)petals on N-doped reduced graphene oxide for exceptional electromagnetic wave absorption  

作　　者：Jia Zhao Haoran Lai Ming Li 

机构地区：[1]College of Chemistry and Materials Engineering,Bohai University,Jinzhou 121013,China [2]Yangtze Delta Region Institute(Huzhou),University of Electronic Science and Technology of China,Huzhou 313001,China [3]College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2025年第3期619-630,共12页矿物冶金与材料学报(英文版)

基　　金：supported by the PhD Start-up Fund of Science and Technology Department of Liaoning Province,China(No.2022-BS-306);the General Cultivation Scientific Research Project of Bohai University,China(No.0522xn058);the PhD Research Startup Foundation of Bohai University,China(No.0521bs021);the Youth Project of Natural Science Foundation of Hunan Province,China(No.2022JJ40338);the Scientific Research Youth Project by Education Department of Hunan Province,China(No.22B0556).

摘　　要：The effective construction of electromagnetic(EM)wave absorption materials with thin matching thickness,broad bandwidth,and remarkable absorption is a great solution to EM pollution,which is a hot topic in current environmental governance.In this study,N-doped reduced graphene oxide(N-rGO)was first prepared using a facile hydrothermal method.Then,high-purity 1T-MoS_(2)petals were homogeneously anchored to the wrinkled surface of N-rGO to fabricate 1T-MoS_(2)@N-rGO nanocomposites.The numerous electric di-poles and profuse heterointerfaces in 1T-MoS_(2)@N-rGO would induced the multiple reflection and scattering of EM waves in a distinct-ive multidimensional structure formed by two-dimensional N-rGO and 1T-MoS_(2)microspheres with plentiful thin nanosheets,remarkable conduction loss derived from the migration of massive electrons in a well-constructed conductive network formed by 1T-MoS_(2)@N-rGO,and abundant polarization loss(including dipolar polarization loss and interfacial polarization loss).All of these gave the 1T-MoS_(2)@N-rGO nanocomposites superior EM wave absorption performances.The effective absorption bandwidth of 1T-MoS_(2)@N-rGO reached 6.48 GHz with a relatively thin matching thickness of 1.84 mm,and a minimum reflection loss of-52.24 dB was achieved at 3.84 mm.Additionally,the radar scattering cross-section reduction value of 1T-MoS_(2)@N-rGO was up to 35.42 dB·m^(2) at 0°,which further verified the huge potential of our fabricated 1T-MoS_(2)@N-rGO nanocomposites in practical applications.

关 键 词：1T-MoS_(2)@N-rGO nanocomposites conduction loss polarization loss ultrathin matching thickness electromagnetic wave absorption 

分 类 号：TB33[一般工业技术—材料科学与工程]