材料科学
反射损耗
微波食品加热
微观结构
电介质
金属有机骨架
多孔性
复合材料
散射
介电损耗
宽带
电磁辐射
光电子学
吸附
光学
复合数
物理
有机化学
化学
量子力学
作者
Wenjie Hou,Xing Yan,Claudia Li,Tong Li,Dong Liu,Lusi Ernawati,Jaka Sunarso,Xiuxia Meng
标识
DOI:10.1016/j.materresbull.2023.112171
摘要
Metal-organic frameworks (MOFs) with intrinsic porosity and high specific surface area have aroused broad interests as a promising electromagnetic (EM) absorbing material. However, the introduction of magnetic components in MOFs has remained as a formidable obstacle for subsequent development. Herein, Fe3O4/Co-MOF composites were fabricated via a facile and scalable co-precipitation process. The microstructure and morphology of the composites were characterized and the combination of hollow Fe3O4 and Co-MOFs was found to contribute towards the dissipation of incident waves due to the magnetic-dielectric synergistic effect. Impressive microwave absorption ability was obtained with a minimum reflection loss of –56.1 dB over a qualified bandwidth (7.9 GHz) at 2.0 mm. Moreover, the radar cross section simulation further confirmed the effective suppression of radar wave scattering using Fe3O4/Co-MOF composites. This study provides a versatile strategy for designing magnetic-dielectric composites based on MOFs as effective and broadband microwave absorbers.
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