一步溶热合成具有优异微波吸收特性的空心 Fe3O4/单壁碳纳米角复合材料

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS Diamond and Related Materials Pub Date : 2024-11-14 DOI:10.1016/j.diamond.2024.111783

Yurong Liu , Huijie Wu , Heng Wang , Jinbiao Wang

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摘要

随着电磁辐射和污染的日益严重，迫切需要高性能的微波吸收材料。本研究采用一步溶热法合成了空心 Fe3O4/单壁碳纳米角（SWCNHs）复合材料。该研究全面考察了空心 Fe3O4/SWCNHs 复合材料的成分、形貌、微观结构和微波吸收性能。得益于独特的中空球形结构以及介电损耗和磁损耗的协同效应，获得的中空 Fe3O4/SWCNHs 复合材料在 16.8 GHz 频率下的最佳反射损耗为 -46.9 dB，匹配厚度为 1.5 mm，有效吸收带宽为 7.21 GHz，范围从 10.79 GHz 到 18 GHz，厚度为 2.0 mm，表明中空 Fe3O4/SWCNHs 复合材料可用于高效微波吸收。

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One-step solvothermal synthesis of hollow Fe3O4/single walled carbon nanohorns composites with excellent microwave absorption properties

With the increasingly serious electromagnetic radiation and pollution, high-performance microwave absorption materials are urgently needed. In this work, the hollow Fe₃O₄/single-walled carbon nanohorns (SWCNHs) composites have been synthesized through one-step solvothermal method. The compositions, morphologies, microstructures, and microwave absorption performance of the hollow Fe₃O₄/SWCNHs composite have been comprehensively investigated. Benefitting from the unique hollow spherical structure and synergistic effects of dielectric loss and magnetic loss, the as-obtained hollow Fe₃O₄/SWCNHs composite exhibits an optimum reflection loss of −46.9 dB at 16.8 GHz with a matching thickness of 1.5 mm, and a broad effective absorption bandwidth of 7.21 GHz ranging from 10.79 to 18 GHz with a thickness of 2.0 mm, suggesting that the hollow Fe₃O₄/SWCNHs composite can be used for high-efficiency microwave absorption.

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来源期刊

Diamond and Related Materials 工程技术-材料科学：综合

CiteScore

6.00

自引率

14.60%

发文量

702

审稿时长

2.1 months

期刊介绍： DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices. The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.