双金属MOF衍生的CoZn-C/MWCNTs复合材料用于轻质宽带微波吸收

doi:10.1016/j.actphy.2026.100276

物理化学学报 >> 2026, Vol. 42 >> Issue (6): 100276.doi: 10.1016/j.actphy.2026.100276

双金属MOF衍生的CoZn-C/MWCNTs复合材料用于轻质宽带微波吸收

刘亚楠¹, 苏晓岗¹^,*(), 兰笛², 刘江涌¹, 马卫海³^,*(), 刘亚青¹^,*()

¹ 中北大学材料科学与工程学院, 功能高分子复合材料山西省重点实验室, 山西太原 030051
² 湖北汽车工业学院汽车材料学院, 湖北十堰 442002
³ 中国电子科技集团公司第三十三研究所, 中国-白俄罗斯电磁环境效应"一带一路"联合实验室, 山西太原 030032

收稿日期:2026-02-13 修回日期:2026-03-02 录用日期:2026-03-02 发布日期:2026-04-21
通讯作者: Email: su_xiaogang@nuc.edu.cn (苏晓岗)zblhsys@126.com (马卫海)lyq@nuc.edu.cn (刘亚青)

Bimetallic MOF-derived CoZn-C/MWCNTs composite for lightweight and wideband microwave absorption

Yanan Liu¹, Xiaogang Su¹^,*(), Di Lan², Jiangyong Liu¹, Weihai Ma³^,*(), Yaqing Liu¹^,*()

¹ Shanxi Key Laboratory of Functional Polymer Composite Material, College of Materials Science and Engineering, North University of China, Taiyuan 030051, Shanxi Province, China
² School of Automotive Materials, Hubei University of Automotive Technology, Shiyan 442002, Hubei Province, China
³ China-Belarus "Belt and Road Initiative" Joint Laboratory on Electromagnetic Environmental Effects, The 33rd Research Institute of China Electronics Technology Group Corporation, Taiyuan 030032, Shanxi Province, China

Received:2026-02-13 Revised:2026-03-02 Accepted:2026-03-02 Published:2026-04-21
Contact: Email: su_xiaogang@nuc.edu.cn (Xiaogang Su)zblhsys@126.com (Weihai Ma)lyq@nuc.edu.cn (Yaqing Liu)

摘要/Abstract

摘要：

在现代雷达隐身和电磁兼容领域，实现兼具宽频带、强吸收、轻质和薄型特征的高性能微波吸收材料仍然是一项重大挑战。本研究提出一种简易经济的策略，利用双金属沸石咪唑酯骨架(ZIFs)衍生物制备轻质高效微波吸收剂。通过连续湿化学法合成了一系列掺有多壁碳纳米管(MWCNTs)的ZIF-8@ZIF-67前驱体，经后续热解转化为多孔双金属MOF衍生CoZn-C/MWCNTs复合材料。通过改变前驱体中Co/Zn的摩尔比，可以精确调控热解产物的成分、微观结构和电磁特性。得益于磁损耗与介电损耗的协同作用，Co/Zn比为3 : 1的复合材料在所有样品中表现出最优的衰减常数与阻抗匹配。填料负载量仅为20 wt.%，该优化复合材料在1.9 mm厚度时实现5.29 GHz的有效吸收带宽，2.0 mm厚度时最小反射损耗达−23.78 dB。雷达散射截面模拟进一步验证了其增强的散射抑制性能。本研究为宽带电磁波吸收性能的轻质MOF基复合材料设计提供了新视角。

关键词: 双金属MOF衍生物, 微波吸收, 阻抗匹配, 碳基材料

Abstract:

Achieving high-performance microwave absorbers characterized by wide bandwidth, robust absorption, lightweight properties, and thin profiles remains a critical challenge within modern radar stealth and electromagnetic compatibility domains. In this study, we introduce a straightforward and cost-effective strategy for fabricating lightweight and efficient microwave absorbers utilizing composites derived from bimetallic zeolitic imidazolate frameworks (ZIFs). A variety of ZIF-8@ZIF-67 precursors incorporating multi-walled carbon nanotubes (MWCNTs) were synthesized through a sequential wet-chemical process. These precursors underwent conversion into porous bimetallic MOF-derived CoZn-C/MWCNTs composites via subsequent pyrolysis. The composition, microstructure, and electromagnetic characteristics of the pyrolyzed materials were precisely regulated by varying the Co/Zn molar ratio within the precursors. Due to the synergistic magnetic and dielectric dissipations, the 3 : 1 Co/Zn composite exhibited the best attenuation constant and impedance matching among all synthesized samples. Thus, the optimized composite provided a significant effective absorption bandwidth of 5.29 GHz at a thickness of 1.9 mm, coupled with an outstanding minimum reflection loss of −23.78 dB at 2.0 mm, even with a minimal filler loading of 20 wt.%. The enhanced scattering suppression behavior was additionally verified through radar cross-section simulation. This research provides a novel viewpoint on the rational design of lightweight MOF-based composites for broadband electromagnetic wave absorption performance.

Key words: Bimetallic MOF derivatives, Microwave absorption, Impedance matching, Carbon-based materials

刘亚楠, 苏晓岗, 兰笛, 刘江涌, 马卫海, 刘亚青. 双金属MOF衍生的CoZn-C/MWCNTs复合材料用于轻质宽带微波吸收[J]. 物理化学学报, 2026, 42(6), 100276. doi: 10.1016/j.actphy.2026.100276

Yanan Liu, Xiaogang Su, Di Lan, Jiangyong Liu, Weihai Ma, Yaqing Liu. Bimetallic MOF-derived CoZn-C/MWCNTs composite for lightweight and wideband microwave absorption[J]. Acta Phys. -Chim. Sin. 2026, 42(6), 100276. doi: 10.1016/j.actphy.2026.100276

链接本文: https://www.whxb.pku.edu.cn/CN/10.1016/j.actphy.2026.100276

https://www.whxb.pku.edu.cn/CN/Y2026/V42/I6/100276

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References	System	Mass filling ratio (wt.%)	d (mm) @EAB	RL_min	EAB_max
[47]	Ni₂P-HCS	45	1.71	−46.70	4.80
[48]	graphene/MWNTs/PBO	80	2.60	−50.17	4.20
[49]	Ni_SR/NiP/C	25	3.26	−76.97	4.08
[50]	MoxC-Co/C	30	2.09	−71.39	4.08
[51]	FePc/N-rGO	60	3.80	−49.30	4.30
[52]	NG	30	4.00	−13.00	2.10
[53]	PPyCQDs	25	3.25	−27.80	2.34
[54]	RGO/SF/PANI	50	1.50	−45.00	5.48
[55]	N1-GN	40	2.90	−43.20	2.00
This work	BCM-3:1	20	1.90	−23.78	5.29

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双金属MOF衍生的CoZn-C/MWCNTs复合材料用于轻质宽带微波吸收

Bimetallic MOF-derived CoZn-C/MWCNTs composite for lightweight and wideband microwave absorption

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