Cargando…
Enhanced Electromagnetic Wave Absorption Properties of Ultrathin MnO(2) Nanosheet-Decorated Spherical Flower-Shaped Carbonyl Iron Powder
In this work, spherical flower-shaped composite carbonyl iron powder@MnO(2) (CIP@MnO(2)) with CIP as the core and ultrathin MnO(2) nanosheets as the shell was successfully prepared by a simple redox reaction to improve oxidation resistance and electromagnetic wave absorption properties. The microwav...
Autores principales: | , , , , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8746408/ https://www.ncbi.nlm.nih.gov/pubmed/35011367 http://dx.doi.org/10.3390/molecules27010135 |
_version_ | 1784630578439520256 |
---|---|
author | Qu, Zhengwei Wang, Yi Yang, Pingan Zheng, Wei Li, Nan Bai, Jingying Zhang, Youwei Li, Kailin Wang, Dashuang Liu, Zhaohui Yao, Kexin Li, Rui Zhang, Yuxin |
author_facet | Qu, Zhengwei Wang, Yi Yang, Pingan Zheng, Wei Li, Nan Bai, Jingying Zhang, Youwei Li, Kailin Wang, Dashuang Liu, Zhaohui Yao, Kexin Li, Rui Zhang, Yuxin |
author_sort | Qu, Zhengwei |
collection | PubMed |
description | In this work, spherical flower-shaped composite carbonyl iron powder@MnO(2) (CIP@MnO(2)) with CIP as the core and ultrathin MnO(2) nanosheets as the shell was successfully prepared by a simple redox reaction to improve oxidation resistance and electromagnetic wave absorption properties. The microwave-absorbing properties of CIP@MnO(2) composites with different filling ratios (mass fractions of 20%, 40%, and 60% after mixing with paraffin) were tested and analyzed. The experimental results show that compared with pure CIP, the CIP@MnO(2) composites have smaller minimum reflection loss and a wider effective absorption bandwidth than CIP (RL < −20 dB). The sample filled with 40 wt% has the best comprehensive performance, the minimum reflection loss is −63.87 dB at 6.32 GHz, and the effective absorption bandwidth (RL < −20 dB) reaches 7.28 GHz in the range of 5.92 GHz–9.28 GHz and 11.2 GHz–15.12 GHz, which covers most C and X bands. Such excellent microwave absorption performance of the spherical flower-like CIP@MnO(2) composites is attributed to the combined effect of multiple beneficial components and the electromagnetic attenuation ability generated by the special spherical flower-like structure. Furthermore, this spherical flower-like core–shell shape aids in the creation of discontinuous networks, which improve microwave incidence dispersion, polarize more interfacial charges, and allow electromagnetic wave absorption. In theory, this research could lead to a simple and efficient process for producing spherical flower-shaped CIP@MnO(2) composites with high absorption, a wide band, and oxidation resistance for a wide range of applications. |
format | Online Article Text |
id | pubmed-8746408 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-87464082022-01-11 Enhanced Electromagnetic Wave Absorption Properties of Ultrathin MnO(2) Nanosheet-Decorated Spherical Flower-Shaped Carbonyl Iron Powder Qu, Zhengwei Wang, Yi Yang, Pingan Zheng, Wei Li, Nan Bai, Jingying Zhang, Youwei Li, Kailin Wang, Dashuang Liu, Zhaohui Yao, Kexin Li, Rui Zhang, Yuxin Molecules Article In this work, spherical flower-shaped composite carbonyl iron powder@MnO(2) (CIP@MnO(2)) with CIP as the core and ultrathin MnO(2) nanosheets as the shell was successfully prepared by a simple redox reaction to improve oxidation resistance and electromagnetic wave absorption properties. The microwave-absorbing properties of CIP@MnO(2) composites with different filling ratios (mass fractions of 20%, 40%, and 60% after mixing with paraffin) were tested and analyzed. The experimental results show that compared with pure CIP, the CIP@MnO(2) composites have smaller minimum reflection loss and a wider effective absorption bandwidth than CIP (RL < −20 dB). The sample filled with 40 wt% has the best comprehensive performance, the minimum reflection loss is −63.87 dB at 6.32 GHz, and the effective absorption bandwidth (RL < −20 dB) reaches 7.28 GHz in the range of 5.92 GHz–9.28 GHz and 11.2 GHz–15.12 GHz, which covers most C and X bands. Such excellent microwave absorption performance of the spherical flower-like CIP@MnO(2) composites is attributed to the combined effect of multiple beneficial components and the electromagnetic attenuation ability generated by the special spherical flower-like structure. Furthermore, this spherical flower-like core–shell shape aids in the creation of discontinuous networks, which improve microwave incidence dispersion, polarize more interfacial charges, and allow electromagnetic wave absorption. In theory, this research could lead to a simple and efficient process for producing spherical flower-shaped CIP@MnO(2) composites with high absorption, a wide band, and oxidation resistance for a wide range of applications. MDPI 2021-12-27 /pmc/articles/PMC8746408/ /pubmed/35011367 http://dx.doi.org/10.3390/molecules27010135 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Qu, Zhengwei Wang, Yi Yang, Pingan Zheng, Wei Li, Nan Bai, Jingying Zhang, Youwei Li, Kailin Wang, Dashuang Liu, Zhaohui Yao, Kexin Li, Rui Zhang, Yuxin Enhanced Electromagnetic Wave Absorption Properties of Ultrathin MnO(2) Nanosheet-Decorated Spherical Flower-Shaped Carbonyl Iron Powder |
title | Enhanced Electromagnetic Wave Absorption Properties of Ultrathin MnO(2) Nanosheet-Decorated Spherical Flower-Shaped Carbonyl Iron Powder |
title_full | Enhanced Electromagnetic Wave Absorption Properties of Ultrathin MnO(2) Nanosheet-Decorated Spherical Flower-Shaped Carbonyl Iron Powder |
title_fullStr | Enhanced Electromagnetic Wave Absorption Properties of Ultrathin MnO(2) Nanosheet-Decorated Spherical Flower-Shaped Carbonyl Iron Powder |
title_full_unstemmed | Enhanced Electromagnetic Wave Absorption Properties of Ultrathin MnO(2) Nanosheet-Decorated Spherical Flower-Shaped Carbonyl Iron Powder |
title_short | Enhanced Electromagnetic Wave Absorption Properties of Ultrathin MnO(2) Nanosheet-Decorated Spherical Flower-Shaped Carbonyl Iron Powder |
title_sort | enhanced electromagnetic wave absorption properties of ultrathin mno(2) nanosheet-decorated spherical flower-shaped carbonyl iron powder |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8746408/ https://www.ncbi.nlm.nih.gov/pubmed/35011367 http://dx.doi.org/10.3390/molecules27010135 |
work_keys_str_mv | AT quzhengwei enhancedelectromagneticwaveabsorptionpropertiesofultrathinmno2nanosheetdecoratedsphericalflowershapedcarbonylironpowder AT wangyi enhancedelectromagneticwaveabsorptionpropertiesofultrathinmno2nanosheetdecoratedsphericalflowershapedcarbonylironpowder AT yangpingan enhancedelectromagneticwaveabsorptionpropertiesofultrathinmno2nanosheetdecoratedsphericalflowershapedcarbonylironpowder AT zhengwei enhancedelectromagneticwaveabsorptionpropertiesofultrathinmno2nanosheetdecoratedsphericalflowershapedcarbonylironpowder AT linan enhancedelectromagneticwaveabsorptionpropertiesofultrathinmno2nanosheetdecoratedsphericalflowershapedcarbonylironpowder AT baijingying enhancedelectromagneticwaveabsorptionpropertiesofultrathinmno2nanosheetdecoratedsphericalflowershapedcarbonylironpowder AT zhangyouwei enhancedelectromagneticwaveabsorptionpropertiesofultrathinmno2nanosheetdecoratedsphericalflowershapedcarbonylironpowder AT likailin enhancedelectromagneticwaveabsorptionpropertiesofultrathinmno2nanosheetdecoratedsphericalflowershapedcarbonylironpowder AT wangdashuang enhancedelectromagneticwaveabsorptionpropertiesofultrathinmno2nanosheetdecoratedsphericalflowershapedcarbonylironpowder AT liuzhaohui enhancedelectromagneticwaveabsorptionpropertiesofultrathinmno2nanosheetdecoratedsphericalflowershapedcarbonylironpowder AT yaokexin enhancedelectromagneticwaveabsorptionpropertiesofultrathinmno2nanosheetdecoratedsphericalflowershapedcarbonylironpowder AT lirui enhancedelectromagneticwaveabsorptionpropertiesofultrathinmno2nanosheetdecoratedsphericalflowershapedcarbonylironpowder AT zhangyuxin enhancedelectromagneticwaveabsorptionpropertiesofultrathinmno2nanosheetdecoratedsphericalflowershapedcarbonylironpowder |