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Natural Hollow Fiber-Derived Carbon Microtube with Broadband Microwave Attenuation Capacity
Constructing hierarchical structures is indispensable to tuning the electromagnetic properties of carbon-based materials. Here, carbon microtubes with nanometer wall thickness and micrometer diameter were fabricated by a feasible approach with economical and sustainable kapok fiber. The carbonized k...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9655754/ https://www.ncbi.nlm.nih.gov/pubmed/36365495 http://dx.doi.org/10.3390/polym14214501 |
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author | Zhao, Yanfang Long, Aichun Zhao, Pengfei Liao, Lusheng Wang, Rui Li, Gaorong Wang, Bingbing Liao, Xiaoxue Yu, Rentong Liao, Jianhe |
author_facet | Zhao, Yanfang Long, Aichun Zhao, Pengfei Liao, Lusheng Wang, Rui Li, Gaorong Wang, Bingbing Liao, Xiaoxue Yu, Rentong Liao, Jianhe |
author_sort | Zhao, Yanfang |
collection | PubMed |
description | Constructing hierarchical structures is indispensable to tuning the electromagnetic properties of carbon-based materials. Here, carbon microtubes with nanometer wall thickness and micrometer diameter were fabricated by a feasible approach with economical and sustainable kapok fiber. The carbonized kapok fiber (CKF) exhibits microscale pores from the inherent porous templates as well as pyrolysis-induced nanopores inside the wall, affording the hierarchical carbon microtube with excellent microwave absorbing performance over broad frequency. Particularly, CKF-650 exhibits an optimized reflection loss (RL) of −62.46 dB (10.32 GHz, 2.2 mm), while CKF-600 demonstrates an effective absorption bandwidth (RL < −10 dB) of 6.80 GHz (11.20–18.00 GHz, 2.8 mm). Moreover, more than 90% of the incident electromagnetic wave ranging from 2.88 GHz to 18.00 GHz can be dissipated by simply controlling the carbonization temperature of KF and/or the thickness of the carbon-microtube-based absorber. These encouraging findings provide a facile alternative route to fabricate microwave absorbers with broadband attenuation capacity by utilizing sustainable biomass. |
format | Online Article Text |
id | pubmed-9655754 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-96557542022-11-15 Natural Hollow Fiber-Derived Carbon Microtube with Broadband Microwave Attenuation Capacity Zhao, Yanfang Long, Aichun Zhao, Pengfei Liao, Lusheng Wang, Rui Li, Gaorong Wang, Bingbing Liao, Xiaoxue Yu, Rentong Liao, Jianhe Polymers (Basel) Article Constructing hierarchical structures is indispensable to tuning the electromagnetic properties of carbon-based materials. Here, carbon microtubes with nanometer wall thickness and micrometer diameter were fabricated by a feasible approach with economical and sustainable kapok fiber. The carbonized kapok fiber (CKF) exhibits microscale pores from the inherent porous templates as well as pyrolysis-induced nanopores inside the wall, affording the hierarchical carbon microtube with excellent microwave absorbing performance over broad frequency. Particularly, CKF-650 exhibits an optimized reflection loss (RL) of −62.46 dB (10.32 GHz, 2.2 mm), while CKF-600 demonstrates an effective absorption bandwidth (RL < −10 dB) of 6.80 GHz (11.20–18.00 GHz, 2.8 mm). Moreover, more than 90% of the incident electromagnetic wave ranging from 2.88 GHz to 18.00 GHz can be dissipated by simply controlling the carbonization temperature of KF and/or the thickness of the carbon-microtube-based absorber. These encouraging findings provide a facile alternative route to fabricate microwave absorbers with broadband attenuation capacity by utilizing sustainable biomass. MDPI 2022-10-24 /pmc/articles/PMC9655754/ /pubmed/36365495 http://dx.doi.org/10.3390/polym14214501 Text en © 2022 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 Zhao, Yanfang Long, Aichun Zhao, Pengfei Liao, Lusheng Wang, Rui Li, Gaorong Wang, Bingbing Liao, Xiaoxue Yu, Rentong Liao, Jianhe Natural Hollow Fiber-Derived Carbon Microtube with Broadband Microwave Attenuation Capacity |
title | Natural Hollow Fiber-Derived Carbon Microtube with Broadband Microwave Attenuation Capacity |
title_full | Natural Hollow Fiber-Derived Carbon Microtube with Broadband Microwave Attenuation Capacity |
title_fullStr | Natural Hollow Fiber-Derived Carbon Microtube with Broadband Microwave Attenuation Capacity |
title_full_unstemmed | Natural Hollow Fiber-Derived Carbon Microtube with Broadband Microwave Attenuation Capacity |
title_short | Natural Hollow Fiber-Derived Carbon Microtube with Broadband Microwave Attenuation Capacity |
title_sort | natural hollow fiber-derived carbon microtube with broadband microwave attenuation capacity |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9655754/ https://www.ncbi.nlm.nih.gov/pubmed/36365495 http://dx.doi.org/10.3390/polym14214501 |
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