首页|Tailored heterogeneous interface based on porous hollow In-Co-C nanorods to construct adjustable multi-band microwave absorber

Tailored heterogeneous interface based on porous hollow In-Co-C nanorods to construct adjustable multi-band microwave absorber

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By rationally controlling the growth of zeolite-imidazolium salt skeleton(ZIF-67)nanoparticles on the hollow indium oxide(In2O3)and the subsequent pyrolysis process,In-Co-C hollow rod-like composites with multiple components were successfully prepared in this work.The synergistic impact of diverse components including In2O3,C,Co3InCo.75,and In not only optimizes impedance matching and improves conductive loss,but also creates significant interfacial polarization.Furthermore,the addition of Co source and pyrolysis temperature was found to have a significant affected on impedance matching and mi-crowave absorption.The optimized In-Co-C sample displayed ultra-broad absorption bandwidth(EAB)of up to 7.12 GHz(10.88-18.0 GHz)at 2.26 mm thickness,which could cover the whole Ku band and part of X-band,outperforming the previously reported MOFs-derived composites.Furthermore,by adjusting the thickness to 2.91 mm and 4.01 mm,the EAB could cover the entire X band and most of the C band.The attenuation mechanisms were systematically investigated through the delta function method and ANSYS high-frequency structure simulator.These findings suggest that the MOFs-derived In-Co-C hollow nanorods could serve as high-performance microwave absorbers with ultra-broad absorption.

Microwave absorptionHollow rod-likeMOFs-derivedConductive lossInterfacial polarizationImpedance matching

Zhengying Shen、Di Lan、Yi Cong、Yuanyuan Lian、Nannan Wu、Zirui Jia

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School of Material Science and Engineering,Shandong University of Science and Technology,Qingdao 266590,China

Department of Otolaryngology,the Affiliated Hospital of Qingdao University,Qingdao 266000,China

School of Materials Science and Engineering,Hubei University of Automotive Technology,Shiyan 442002,China

College of Chemistry and Chemical Engineering,Qingdao University,Qingdao 266071,China

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国家自然科学基金国家自然科学基金山东省自然科学基金Taishan Scholars and Young Experts Program of Shandong ProvinceQingchuang Talents Induction Program of Shandong Higher Education InstitutionSpecial Financial of Shandong Province山东省自然科学基金

5237702652301192ZR2019YQ24tsqn202103057ZR2021QE164

2024

10.1016/j.jmst.2023.10.007

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.181(14)
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