首页|Multi-level hollow sphere rich in heterojunctions with dual function:Efficient microwave absorption and antiseptic

Multi-level hollow sphere rich in heterojunctions with dual function:Efficient microwave absorption and antiseptic

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Effective electromagnetic wave absorption is now possible thanks to the design of the dielectric-magnetic double loss mechanism and the rich heterogeneous structure.In this study,hollow carbon spheres with rich heterostructures were synthesized using an easy and effective in situ growing approach.In addition to improving impedance matching,the hollow structure also reduces material density and weight.By modifying the load,this system can alter the dielectric characteristics of MXene,which in turn affects the sample's ability to absorb electromagnetic waves.MXene and the carbon material create a thick con-ductive network during the whole electromagnetic wave absorption process,creating the ideal environ-ment for conduction loss.The sample's ability to attenuate electromagnetic waves is further improved by the interfacial polarization that the rich heterogeneous structure can produce.Co-magnetic nanoparticle nanoparticles are the main source of magnetic loss.The MXene@Co/C-100-800(MCC-100-800)exhibits excellent electromagnetic wave absorption performance under the synergy of multiple loss mechanisms,with the maximum effective absorption bandwidth(EABmax)reaching 7.20 GHz and the minimum reflec-tion loss(RLmin)being-53.99 dB at 2.10 mm.Finally,this work is guided by the coating engineering of MXene and provides new ideas for the rational design of heterostructures of nanomaterials.

HeterostructureDielectric-magnetic double lossMXeneHollow carbon sphereElectromagnetic wave absorption

Liyuan Yu、Di Lan、Zhiqiang Guo、Ailing Feng、Guanglei Wu、Zirui Jia、Xing Feng、Pengfei Yin

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College of Science,Sichuan Agricultural University,Ya'an 625014,China

Institute of Materials for Energy and Environment,State Key Laboratory of Bio-fibers and Eco-textiles,College of Materials Science and Engineering,Qingdao University,Qingdao 266071,China

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

Institute of Materials for Energy and Environment,State Key Laboratory of Biofibers and Eco-Textiles,College of Materials Science and Engineering,Qingdao University,Qingdao 266071,China

Institute of Physics & Optoelectronics Technology Baoji University of Arts and Sciences,Baoji 721016,China

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National Natural science Foundation of ChinaNational Natural science Foundation of ChinaTaishan Scholars and Young Experts Program of Shandong ProvinceQingchuang Talents Induction Program of Shandong Higher Education InstitutionSpecial Financial of Shandong Province

5237702652301192tsqn202103057

2024

10.1016/j.jmst.2024.01.004

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)：2024.189(22)
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