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材料导报  2025, Vol. 39 Issue (11): 24020121-9    https://doi.org/10.11896/cldb.24020121
  金属与金属基复合材料 |
MOFs衍生钴/碳复合材料的制备及吸波性能研究
马茜1, 强荣1,*, 邵玉龙2, 杨啸1, 薛瑞1, 任方杰1, 吴旭1
1 中原工学院智能纺织与织物电子学院,郑州 450007
2 黄河科技学院工学部,郑州 450061
Preparation and Absorption Properties of Co/C Composites Derived from MOFs
MA Qian1, QIANG Rong1,*, SHAO Yulong2, YANG Xiao1, XUE Rui1, REN Fangjie1, WU Xu1
1 College of Intelligent Textile and Fabric Electronics, Zhongyuan University of Technology, Zhengzhou 450007, China
2 Faculty of Engineering, Huanghe University of Science and Technology, Zhengzhou 450061, China
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摘要 目前,电磁污染问题十分突出,设计高性能微波吸收材料具有重要意义。基于介电损耗、磁损耗以及异质结构中多组分的协同作用,开发具有强吸收和多重散射的微波吸收材料是一种很有前途的策略。本工作通过简单的方法合成了多面体MOFs,再经高温碳热还原得到Co/C复合材料。结果表明:随着煅烧温度的升高,Co/C复合材料中碳组分的石墨化程度增大,介电损耗能力增强;Co纳米粒子的结晶度增大,材料的饱和磁化强度增强,铁磁特性明显。磁-介双损耗机制有助于改善阻抗匹配,增强损耗特性。800 ℃氩气条件下获得的Co/C复合材料在吸收厚度为5.0 mm、4.8 GHz处的最小RL达到-46.4 dB,并且在厚度为2.0 mm时的微波吸收带宽为5.6 GHz。
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马茜
强荣
邵玉龙
杨啸
薛瑞
任方杰
吴旭
关键词:  钴/碳复合材料  电磁波  介电损耗  磁损耗  界面极化    
Abstract: At present, the problem of electromagnetic pollution is very prominent, and it is of great significance to design high-performance microwave absorption materials. Based on the synergistic effect of dielectric loss, magnetic loss and multi-component in heterogeneous structure, it is a promising strategy to develop microwave absorption materials with strong absorption and multiple scattering. In this work, polyhedral metal organic frameworks (MOFs) were synthesized by a simple method, and Co/C composites were obtained by carbothermal reduction at high tempe-rature. The results indicate that with the increase of calcination temperature, the degree of graphitization of carbon components in Co/C compo-sites is enhanced, and the dielectric loss ability is enhanced. The crystallinity of Co nanoparticles increases, the saturation magnetization of Co nanoparticles increases, and the ferromagnetic properties are obvious. The magnetic-dielectric dual loss mechanism helps to improve impedance matching and enhance loss characteristics. The Co/C composite obtained under the condition of 800 ℃ argon has a minimum reflection loss (RL) of -46.4 dB at the absorption thickness of 5.0 mm and 4.8 GHz, and a microwave absorption bandwidth (EAB) of 5.6 GHz at the thickness of 2.0 mm.
Key words:  Co/C composite    electromagnetic wave    dielectric loss    magnetic loss    interfacial polarization
发布日期:  2025-05-29
ZTFLH:  TB33  
基金资助: 国家自然科学基金青年基金(51902359);河南省重点研发与推广专项(242102231067); 纺织工业联合会科技指导性项目(2021044);校级自然科学面上项目(K2023MS009);校级青年硕导培育计划(2023)
通讯作者:  *强荣,博士,中原工学院智能纺织与织物电子学院副教授、硕士研究生导师。目前主要从事碳基复合吸波材料方面的研究。Casey2009@126.com   
作者简介:  马茜,中原工学院智能纺织与织物电子学院硕士研究生,在强荣教授的指导下进行研究。目前主要研究领域为碳基吸波材料的可控制备。
引用本文:    
马茜, 强荣, 邵玉龙, 杨啸, 薛瑞, 任方杰, 吴旭. MOFs衍生钴/碳复合材料的制备及吸波性能研究[J]. 材料导报, 2025, 39(11): 24020121-9.
MA Qian, QIANG Rong, SHAO Yulong, YANG Xiao, XUE Rui, REN Fangjie, WU Xu. Preparation and Absorption Properties of Co/C Composites Derived from MOFs. Materials Reports, 2025, 39(11): 24020121-9.
链接本文:  
https://www.mater-rep.com/CN/10.11896/cldb.24020121  或          https://www.mater-rep.com/CN/Y2025/V39/I11/24020121
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