Efficient Fe3O4@ porous carbon microwave absorber constructed from cotton cellulose nanofibers hydrogel
Article
Article Title | Efficient Fe3O4@ porous carbon microwave absorber constructed from cotton cellulose nanofibers hydrogel |
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ERA Journal ID | 1448 |
Article Category | Article |
Authors | Yang, Heng, Zhang, Bin, Sun, Jiuxiao, Su, Xiaogang, Huo, Siqi and Qu, Zhengyao |
Journal Title | Journal of Alloys and Compounds |
Journal Citation | 997 |
Article Number | 174956 |
Number of Pages | 9 |
Year | 2024 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0925-8388 |
1873-4669 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jallcom.2024.174956 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0925838824015433 |
Abstract | Combining biomass-derived porous carbon with magnetic materials is advantageous for crafting broadband and efficient electromagnetic wave-absorbing composites. Utilizing carboxymethyl cellulose (CMC) nanofibers as the carbon source, this study employs a process that integrates freeze-drying and carbonization to successfully synthesize Fe3O4@porous carbon (PC) composites. Demonstrating exceptional absorbing performance, CF-3 achieves a minimum reflection loss (RLmin) of -54.69 dB, with an effective absorbing bandwidth (EAB) of 7.72 GHz at 2.9 mm thickness. This is attributed to the unique porous structure and the conductive network formed by the maintained fiber structure, while the doping of Fe3O4 improves the impedance matching, allowing it to attenuate electromagnetic energy. Furthermore, simulation results reveal a substantial decrease in the radar cross section (RCS) value, reducing the likelihood of radar detection for military equipment. This study offers novel strategies for the cost-effective preparation of magnetically coupled porous carbon absorbing materials with outstanding performance. |
Keywords | Biomass porous carbon ; Radar scattering cross section ; Dielectric loss ; Broadband microwave absorption |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401808. Nanometrology |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Wuhan Textile University, China |
Wuhan University of Technology, China | |
North University of China, China | |
School of Engineering |
https://research.usq.edu.au/item/z75z3/efficient-fe3o4-porous-carbon-microwave-absorber-constructed-from-cotton-cellulose-nanofibers-hydrogel
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