MOF-derived multi-interface carbon-based composites with enhanced polarization loss and efficient microwave absorption

IF 4.5 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Smart and Nano Materials Pub Date : 2022-07-03 DOI:10.1080/19475411.2022.2095456

Hongjiao Qu, Peng Zheng, Tao Wang, Xingyu Yu, Junjie Pan, Xiaoli Fan, Tengfei Zhang, Xin Sun, Jianping He

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引用次数: 1

Abstract

ABSTRACT Metal-organic framework materials (MOFs) have been widely studied because of their adjustable composition and controllable structure in the field of microwave absorption (MA). Therein, Prussian blue analogs (PBA) have attracted the attention of researchers with ultra-high metal content. However, the attenuation ability of microwave for PBA-based composites is still unsatisfactory up to now. Therefore, the NiFe/CoFe@C composites were prepared by carbonizing polymetallic PBA (NiCoFe PBA) materials in this work, and the influence of different metal alloy components on MA was explored by adjusting the ratio of metal ions (Ni2+/Co2+). Moreover, the NiFe/CoFe@C composites have rich interfaces and enhance the polarization loss due to the introduction of Ni and it has an optimal performance at 2.7 mm that is the reflection loss (RL) is −41.49 dB and an effective absorption bandwidth (EAB) is 7.12 GHz with 1/1 (Ni2+/Co2+). The above data provides a research idea for obtaining light and efficient absorbers. GRAPHICAL ABSTRACT

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具有增强极化损耗和高效微波吸收的mof衍生多界面碳基复合材料

金属有机骨架材料（MOFs）由于其可调节的组成和可控的结构，在微波吸收领域得到了广泛的研究。其中，普鲁士蓝类似物（PBA）以其超高的金属含量引起了研究人员的关注。然而，到目前为止，微波对PBA基复合材料的衰减能力仍然不令人满意。因此，NiFe/CoFe@C本工作通过碳化多金属PBA（NiCoFe-PBA）材料制备了复合材料，并通过调节金属离子（Ni2+/Co2+）的比例来探讨不同金属合金成分对MA的影响。此外，NiFe/CoFe@C由于Ni的引入，复合材料具有丰富的界面并提高了极化损耗，并且在2.7mm处具有最佳性能，即反射损耗（RL）为-41.49dB，有效吸收带宽（EAB）为7.12GHz，具有1/1（Ni2+/Co2+）。以上数据为获得轻质高效吸收剂提供了研究思路。图形摘要

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来源期刊

International Journal of Smart and Nano Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

6.30

自引率

5.10%

发文量

审稿时长

11 weeks

期刊介绍： The central aim of International Journal of Smart and Nano Materials is to publish original results, critical reviews, technical discussion, and book reviews related to this compelling research field: smart and nano materials, and their applications. The papers published in this journal will provide cutting edge information and instructive research guidance, encouraging more scientists to make their contribution to this dynamic research field.