石墨烯
材料科学
气凝胶
纳米复合材料
氧化物
反射损耗
吸收(声学)
微波食品加热
电介质
热解
阻抗匹配
复合材料
纳米技术
光电子学
化学工程
复合数
电阻抗
冶金
物理
电气工程
量子力学
工程类
作者
Dongyi Lei,C. Liu,Chuan Dong,Sijia Wang,Peng Zhang,Ying Li,Jiaxin Liu,Yi Dong,Chunxiang Zhou
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2024-01-03
被引量:1
标识
DOI:10.1021/acsanm.3c04301
摘要
Efficient electromagnetic wave absorption (EMA) materials are urgently needed to solve the increasingly serious electromagnetic pollution problems in both the modern military and civil fields. Multidimensional and multielement electromagnetic absorbing materials exhibit enormous potential in EMA applications owing to the combination of material and structure advantages. Herein, a three-dimensional (3D) reduced graphene oxide/Ti3C2Tx MXene/iron–cobalt alloy carbon (rGO/MXene/FeCoC) nanocomposite aerogel derived from FeCo-ZIF metal–organic frameworks (MOFs) was successfully fabricated by combining freeze-drying and pyrolysis methods. The minimum reflection loss (RLmin) of the optimized rGO/MXene/FeCoC-30% is −61.4 dB and the effective absorption band (EAB, <−10 dB) reaches up to 4.95 GHz with a matching thickness of 1.55 mm. The outstanding EMA performance benefits the excellent impedance matching, the rich multiple reflections and scattering in three-dimensional porous structures, and the favorable dielectric-magnetic synergistic losses endowed by graphene, MXene, and FeCoC nanoparticles. The successful construction of the multicomponent rGO/MXene/FeCoC nanocomposite aerogel provides a prospective direction for the development of high-efficient electromagnetic absorbing materials.
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