Bimetallic MOF-derived Co/Ni@C and MXene co-decorated cellulose-derived carbon foams for absorption-dominated electromagnetic interference shielding

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED Carbohydrate Polymers Pub Date : 2025-02-10 DOI:10.1016/j.carbpol.2025.123369

Fang Ren , Lin Ma , Chunjie Li , Tong Wu , Jiale Zhang , Lu Pei , Yanling Jin , Zhenfeng Sun , Zhengzheng Guo , Ping Song , Penggang Ren

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Abstract

Metal−organic framework (MOF)-derived magnetic porous carbon not only have excellent magnetic loss, but also can construct various nanostructures through appropriate design to enhance electromagnetic waves (EMWs) absorption. Herein, magnetic porous carbon (Co/Ni@C) derived from rod-shaped Co/Ni-MOFs was selected as magnetic components and MXene was regarded as conductive materials to construct the three-dimensional porous Co/Ni@C/MXene/cellulose-derived carbon foams via a simple solution mixing-regeneration, freeze-drying process and a facile pyrolysis strategy. Due to the electric/magnetic coupling loss and the interfacial polarization loss caused by multi-interface architecture, the synthesized carbon foam achieves an absorption coefficient of 0.54 and a high EMI SE of 70.4 dB, which enhances the electromagnetic shielding performance without damaging the high absorption coefficient. This work provides a basis for the preparation of electromagnetic shielding composite materials with multi-interface structures to achieve efficient EMI SE and superior absorption coefficients.

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双金属mof衍生的Co/Ni@C和MXene共同装饰纤维素衍生的碳泡沫用于吸收主导的电磁干扰屏蔽

金属-有机骨架（MOF）衍生的磁性多孔碳不仅具有优异的磁损耗，而且通过适当的设计可以构建各种纳米结构来增强电磁波的吸收。本文选择棒状Co/ ni - mof衍生的磁性多孔碳（Co/Ni@C）作为磁性组分，以MXene为导电材料，通过简单的溶液混合再生、冷冻干燥和快速热解策略构建三维多孔Co/Ni@C/MXene/纤维素衍生碳泡沫。由于多界面结构导致的电磁耦合损耗和界面极化损耗，合成的泡沫碳在不破坏高吸收系数的前提下，获得了0.54的吸收系数和70.4 dB的高EMI SE，提高了泡沫碳的电磁屏蔽性能。该工作为制备具有多界面结构的电磁屏蔽复合材料提供了基础，从而获得高效的电磁干扰SE和优越的吸收系数。

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来源期刊

Carbohydrate Polymers 化学-高分子科学

CiteScore

22.40

自引率

8.00%

发文量

1286

审稿时长

47 days

期刊介绍： Carbohydrate Polymers stands as a prominent journal in the glycoscience field, dedicated to exploring and harnessing the potential of polysaccharides with applications spanning bioenergy, bioplastics, biomaterials, biorefining, chemistry, drug delivery, food, health, nanotechnology, packaging, paper, pharmaceuticals, medicine, oil recovery, textiles, tissue engineering, wood, and various aspects of glycoscience. The journal emphasizes the central role of well-characterized carbohydrate polymers, highlighting their significance as the primary focus rather than a peripheral topic. Each paper must prominently feature at least one named carbohydrate polymer, evident in both citation and title, with a commitment to innovative research that advances scientific knowledge.