Composites of In/C hexagonal nanorods and graphene nanosheets for high-performance electromagnetic wave absorption

查看全文 作　　者：Rao [1]Zhang;Congpu [1,2]Mu;Bochong [1,2]Wang;Jianyong [1]Xiang;Kun [1]Zhai;Tianyu [1]Xue;Fusheng [1]Wen

机构地区：[1]State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao 066004,China;[2]Hebei Key Laboratory of Microstructure Materials Physics,School of Science,Yanshan University,Qinhuangdao 066004,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》索引2023年第30卷第3期,共9页

基　　金：supported by the National Natural Science Foundation of China(No.52071280);the Natural Science Foundation of Hebei Province,China(No.E2020203151);the Research Program of the College Science&Technology of Hebei Province,China(No.ZD2020121);the Cultivation Project for Basic Research and Innovation of Yanshan University(No.2021LGZD016);the Innovation Capability Improvement Project of Hebei province(No.22567605H)。 摘　　要：In recent years,electromagnetic wave(EMW)absorption has been extensively investigated for solving EMW radiation and pollution.The metal-organic frameworks(MOFs)have attracted attention due to their low density and unique structure,which can meet the requirements of strong reflection loss(RL)and wide absorption bandwidth of EMW absorption materials.In this manuscript,indium nanoparticles/porous carbon(In/C)nanorods composites were prepared via the pyrolysis of nanorods-like In-MOFs at a low temperature of450°C.Indium nanoparticles are evenly attached and embedded on porous carbon.Low electrical conductivity of In/C nanorods is unfavorable to EMW absorption performance,which is due to the low temperature carbonization.Thus,graphene(Gr)nanosheets with high electrical conductivity are introduced to adjust electromagnetic parameters of In/C nanorods for enhancing EMW absorption.The minimum RL of the In/C-Gr-4 composite is up to-43.7 dB with a thin thickness of 1.30 mm.In addition,when the thickness is further reduced to 1.14 mm,the minimum RL of-39.3 dB at 16.1 GHz and effective absorption bandwidth of 3.7 GHz(from 14.3 to 18.0 GHz)can be achieved.This work indicates that In/C-Gr composites show excellent EMW absorption performance. 关键词：electromagnetic wave absorption metal-organic frameworks indium nanoparticles nanorod graphene PERMITTIVITY

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Composites of In/C hexagonal nanorods and graphene nanosheets for high-performance electromagnetic wave absorption

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