In situ formation SiC nanowires on loofah sponge-derived porous carbon for efficient electromagnetic wave absorption

被引:1
作者
Guo, Xiaolin [1 ,2 ]
Li, Haiyu [3 ,4 ]
Zhang, Zhaoyang [3 ,4 ]
Xing, Pengfei [1 ,2 ]
Wang, Shuai [1 ]
Jiang, Shengnan [5 ]
Zhuang, Yanxin [3 ,4 ]
机构
[1] Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
[2] Beijing Inst Technol, State Kay Lab Explos Sci & Technol, Beijing 100083, Peoples R China
[3] Northeastern Univ, Key Lab Electromagnet Proc Mat, Minist Educ, Shenyang 110819, Peoples R China
[4] Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China
[5] Eastern Liaoning Univ, Sch Chem Engn & Machinery, Dandong 118003, Peoples R China
基金
中国国家自然科学基金;
关键词
SiC nanowires; Loofah sponge; Electromagnetic wave absorption; Heterogeneous composite; MICROWAVE-ABSORPTION; BROAD-BAND; FOAM; COMPOSITE; ULTRALIGHT; AEROGELS; STATE;
D O I
10.1016/j.vacuum.2024.113769
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A lightweight, heterogeneous, three-dimensional network-structured composite has been meticulously developed with the specific goal of optimizing impedance matching and elevating electromagnetic wave absorption properties. SiC nanowires-carbon composites were synthesized through a novel process involving combined carbothermal reduction and chemical vapor deposition, utilizing loofah sponge as the foundational material. Accessible and cost-effective organosilane waste was applied as the silicon source. The resulting composites manifest exceptional electromagnetic wave absorption performance with a minimum reflection loss of -46.34 dB and a wide effective bandwidth of 3.84 GHz at a thin thickness of 1.9 mm. Superior electromagnetic wave absorption is attributed to synergistic interplay of multiple interfacial polarizations, dipole polarization, conductive losses, and multiple reflections and scattering. This work presents an innovative pathway toward fabricating highly efficient electromagnetic wave-absorbing materials while effectively repurposing recycled waste.
引用
收藏
页数:10
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