Preparation of metal-organic framework-derived Fe-CoZnCN-T nanocomposites and their microwave absorption performance

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-05-08 DOI:10.1016/j.materresbull.2025.113517

Shuning Ren , Pengfei Ju , Haojie Yu , Bohua Nan , Li Wang , Aizhen Lian , Xusheng Zang , Hongyu Liang

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Abstract

With advancing technology, electromagnetic wave applications are expanding, yet associated radiation increasingly threatens precision instruments and human health, necessitating high-performance absorption materials. Metal-organic frameworks (MOFs) emerge as promising candidates due to their lightweight design, structural tunability, and porosity. This study synthesized three Fe-CoZnCN-T composites through Fc-ZIF-8@CoZn-ZIF pyrolysis at 700 °C, 800 °C, and 900 °C. Structural characterization via TEM/XRD/VSM/Raman revealed optimized dielectric/magnetic properties in Fe-CoZnCN-700. When blended with paraffin (30 wt%), this composite demonstrated exceptional impedance matching and wave dissipation. At 2 mm thickness, Fe-CoZnCN-700 achieved a minimum reflection loss of -61.95 dB at 15.20 GHz with >5.42 GHz effective bandwidth, outperforming counterparts processed at higher temperatures. The balanced permittivity-permeability synergy in 700 °C-derived material underscores its potential for ultrathin microwave absorbers in GHz-range applications.

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金属有机骨架衍生Fe-CoZnCN-T纳米复合材料的制备及其微波吸收性能

随着技术的进步，电磁波的应用范围不断扩大，但相关的辐射日益威胁着精密仪器和人类健康，因此需要高性能的吸收材料。金属有机框架（mof）由于其轻量化设计、结构可调性和多孔性而成为有希望的候选材料。本研究通过Fc-ZIF-8@CoZn-ZIF热解在700℃、800℃和900℃下合成了三种Fe-CoZnCN-T复合材料。通过TEM/XRD/VSM/Raman对Fe-CoZnCN-700进行了优化的介电/磁性能表征。当与石蜡（30% wt%）混合时，该复合材料表现出优异的阻抗匹配和波耗散。在2 mm厚度下，Fe-CoZnCN-700在15.20 GHz和5.42 GHz有效带宽下的最小反射损耗为-61.95 dB，优于在更高温度下加工的同类材料。700°c衍生材料的平衡介电常数-磁导率协同作用强调了其在ghz范围应用的超薄微波吸收器的潜力。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.