材料科学
碳纳米管
复合材料
热解
吸收(声学)
微波食品加热
兴奋剂
纳米颗粒
惰性气体
金属有机骨架
碳纤维
导电体
纳米复合材料
惰性
复合数
纳米技术
化学工程
光电子学
吸附
计算机科学
有机化学
工程类
化学
物理
电信
量子力学
作者
Jing Yan,Ying Huang,Xiaopeng Han,Xiaogang Gao,Panbo Liu
标识
DOI:10.1016/j.compositesb.2018.11.008
摘要
The hierarchical hollow framework involving interconnected highly conductive N-doped carbon nanotube networks and CoS2 particles were successfully prepared by metal-organic framework (MOF) derived method. After the two pyrolysis process in the atmosphere of reducing gas and inert gases, numerous carbon nanotubes interlaced on the surface of framework and CoS2 nanoparticles also attached on the surface. The electromagnetic parameters of CoS2/NCNTs composites can be well controlled by regulating the loadings of sample in sample-paraffin mixture. The results demonstrate that CoS2/NCNTs with 50% loadings show superior electromagnetic wave absorption properties in the wide frequency range, almost covering the whole X bands (8–12 GHz) only with a relative thin thickness of 1.6 mm. Hierarchical hollow structure and better impedance matching performance between N-doped carbon nanocube and CoS2 nanoparticles contribute to the enhancement of microwave absorption ability. Our work confirms that hollow framework CoS2/NCNTs composites can provide a novel idea for designing high-absorbability microwave absorbers.
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