Construction of iron manganese metal-organic framework-derived manganese ferrite/carbon-modified graphene composites toward broadband and efficient electromagnetic dissipation

作     者：Baohua Liu Shuai Liu Zaigang Luo Ruiwen Shu Baohua Liu;Shuai Liu;Zaigang Luo;Ruiwen Shu

作者机构：School of Chemical and Blasting EngineeringAnhui Province Key Laboratory of Specialty PolymersAnhui University of Science and TechnologyHuainan 232001China Joint National-Local Engineering Research Centre for Safe and Precise Coal MiningAnhui University of Science and TechnologyHuainan 232001China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报(英文版))

年 卷 期：2025年第32卷第3期

页      面：546-555页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the Natural Science Research Project of the Anhui Educational Committee,China(No.2022AH050827) the Open Research Fund Program of Anhui Province Key Laboratory of Specialty Polymers,Anhui University of Science and Technology,China(No.AHKLSP23-12) the Joint National-Local Engineering Research Center for Safe and Precise Coal Mining Fund,China(No.EC2022020) 

主　　题：metal-organic frameworks graphene magnetic composites morphology regulation electromagnetic dissipation 

摘      要：The preparation of carbon-based electromagnetic wave(EMW)absorbers possessing thin matching thickness,wide absorption bandwidth,strong absorption intensity,and low filling ratio remains a huge ***-organic frameworks(MOFs)are ideal self-sacrificing templates for the construction of carbon-based EMW *** this work,bimetallic FeMn-MOF-derived MnFe_(2)O_(4)/C/graphene composites were fabricated via a two-step route of solvothermal reaction and the following pyrolysis *** results re-veal the evolution of the microscopic morphology of carbon skeletons from loofah-like to octahedral and then to polyhedron and pomegran-ate after the adjustment of the Fe^(3+)to Mn^(2+)molar ***,at the Fe^(3+)to Mn^(2+)molar ratio of 2:1,the obtained MnFe_(2)O_(4)/C/graphene composite exhibited the highest EMW absorption ***,a minimum reflection loss of-72.7 dB and a max-imum effective absorption bandwidth of 5.1 GHz were achieved at a low filling ratio of 10wt%.In addition,the possible EMW absorp-tion mechanism of MnFe_(2)O_(4)/C/graphene composites was ***,the results of this work will contribute to the construction of broadband and efficient carbon-based EMW absorbers derived from MOFs.