Rational Design of Carbon-Based Composites and Their Microwave Absorption

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanocomposite Materials".

Deadline for manuscript submissions: closed (31 March 2022) | Viewed by 3066

Special Issue Editor


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Guest Editor
School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an, China
Interests: carbon composites; porous structure; dielectric properties; magnetic particles; microwave absorption
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Special Issue Information

Dear Colleagues,

Carbon materials have recently attracted much attention in microwave absorption materials due to their light characteristics, strong chemical resistance and adjustable microstructures. However, the dielectric constant of pure carbon material is often too high, leading to poor impedance matching and weak microwave absorption. With the aim of solving the above limitations, much research focuses on developing carbon-based composites, in which the synergistic effects of dielectric loss and magnetic loss promote impedance matching, resulting in outstanding microwave absorption.

This Special Issue will attempt to cover the recent advances in the rational design of carbon-based composites and their microwave absorption, concerning not only the fabrication processes, the materials employed (carbon nanotubes, graphene, MOF-derived carbon, etc.), and special microstructures (porous structures, core/yolk-shell structures, hollow structures, 3D structures, etc.) but especially reports of their practical application in microwave absorption.

Dr. Panbo Liu
Guest Editor

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Keywords

  • carbon composites
  • porous structure
  • dielectric property
  • magnetic particles
  • microwave absorption

Published Papers (1 paper)

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Research

11 pages, 2873 KiB  
Article
Controllable Fabrication of SiC@C-Fe3O4 Hybrids and Their Excellent Electromagnetic Absorption Properties
by Liqun Duan, Xiaoqing Dai, Fan Wu, Aming Xie, Jian-An Wu, Minqian Sun and Yilu Xia
Nanomaterials 2021, 11(12), 3438; https://doi.org/10.3390/nano11123438 - 18 Dec 2021
Cited by 3 | Viewed by 1981
Abstract
In this work, a batch of novel ternary hybrids (SiC@C-Fe3O4), characterized by SiC nanowires core, carbon shell, and adhered Fe3O4 nanoparticles were controllably synthesized via surface carbonization of SiCnw followed by hydrothermal reaction. Carbon, which [...] Read more.
In this work, a batch of novel ternary hybrids (SiC@C-Fe3O4), characterized by SiC nanowires core, carbon shell, and adhered Fe3O4 nanoparticles were controllably synthesized via surface carbonization of SiCnw followed by hydrothermal reaction. Carbon, which was derived from SiC with nanometer thickness, possesses an amorphous structure, while Fe3O4 nanoparticles are in a crystalline state. Simultaneously, the inducement of Fe3O4 nanoparticles can provide significant magnetic loss, which is well-tuned by changing the molar content of iron precursors (FeCl3·6H2O and FeCl2·4H2O). SiC@C-Fe3O4 hybrids show great electromagnetic absorption performance owing to the synergy effect of dielectric and magnetic losses. The minimum refection loss can reach to −63.71 dB at 11.20 GHz with a thickness of 3.10 mm, while the broad effective absorption bandwidth (EAB) can reach to 7.48 GHz in range of 10.52–18.00 GHz with a thickness of 2.63 mm. Moreover, the EAB can also cover the whole X band and Ku band. The outstanding performance of the obtained material implys that it is a promising candidate as an electromagnetic absorber. Full article
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