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Inspired by the pomegranate natural artful structure, pomegranate micro/nano hierarchical plasma configuration of Fe/Fe3C@graphitized carbon (FFC/pCL) was constructed based on the green sol-gel method and in-situ chemical vapor deposition (CVD) synthesis protocol. Pomegranate-like FFC/pCL successfully overcame the agglomeration phenomenon of magnetic nanoparticles with each seed of the pomegranate consisting of Fe/Fe3C as cores and graphitized carbon layers as shells. The high-density arrangement of magnetic nanoparticles and the design of pomegranate-like heterostructures lead to enhanced plasmon resonance. Thus, the pomegranate-like FFC/pCL achieved a great electromagnetic wave (EMW) absorbing performance of 6.12 GHz wide band absorption at a low mass adding of only 16.7 wt.%. Such excellent EMW performance can be attributed to its unique pomegranate hierarchical plasma configuration with separated nanoscale iron cores, surface porous texture, and good carbon conductive network. This investigation provides a new paradigm for the development of magnetic/carbon based EMW absorbing materials by taking advantage of pomegranate hierarchical plasma configuration.

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Publication history

Received: 26 February 2022
Revised: 09 May 2022
Accepted: 10 May 2022
Published: 02 August 2022
Issue date: October 2022

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© Tsinghua University Press 2022

Acknowledgements

Acknowledgements

This project was financially supported by the Taishan Scholar Project (No. ts201511080), the China Postdoctoral Science Foundation (No. 2021M691963), the Key Research and Development Program of Shandong Province of China (Nos. 2020JMRH0503 and 2019JMRH0402), the Fundamental Research Funds for the Central Universities (No. HIT.OCEF.2021003), the National Natural Science Foundation of China (Nos. 51672059 and 51772060), and Doctoral Scientific Research Start-up Foundation from Shandong University of Technology (Nos. 4041/419008 and 4041/420022).

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Email: nanores@tup.tsinghua.edu.cn

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