Journal ArticleDOI
MOFs-Derived Hollow Co/C Microspheres with Enhanced Microwave Absorption Performance
Zhennan Li,Xijiang Han,Yan Ma,Dawei Liu,Yahui Wang,Ping Xu,Chaolong Li,Yunchen Du,Yunchen Du +8 more
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TLDR
In this paper, the pyrolysis temperature plays an important role in determining the electromagnetic properties of these hollow Co/C microspheres, where high pyrolysis temperature will increase relative complex permittivity and decrease relative complex permeability.Abstract:
Rational construction of a profitable microstructure in carbon-based electromagnetic composites is becoming a promising strategy to reinforce their microwave absorption performance. Herein, the microstructure design is innovatively coupled with a metal–organic frameworks (MOFs)-derived method to produce hollow Co/C microspheres (Co/C-HS). The resultant composites combine the advantages of hollow microstructures and good chemical homogeneity. It is found that the pyrolysis temperature plays an important role in determining the electromagnetic properties of these hollow Co/C microspheres, where high pyrolysis temperature will increase relative complex permittivity and decrease relative complex permeability. When the pyrolysis temperature is 600 °C, the sample (Co/C-HS-600) will show improved impedance matching and good attenuation ability, and thus an excellent microwave absorption performance with strong reflection loss (−66.5 dB at 17.6 GHz) and wide response bandwidth (over −10 dB, 3.7–18.0 GHz) can be a...read more
Citations
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Journal ArticleDOI
Hollow Engineering to Co@N-Doped Carbon Nanocages via Synergistic Protecting-Etching Strategy for Ultrahigh Microwave Absorption
Journal ArticleDOI
Achieving superior electromagnetic wave absorbers through the novel metal-organic frameworks derived magnetic porous carbon nanorods
Nannan Wu,Nannan Wu,Dongmei Xu,Wang Zhou,Fenglong Wang,Jiurong Liu,Wei Liu,Qian Shao,Hu Liu,Qiang Gao,Zhanhu Guo +10 more
TL;DR: In this article, a rod-shape composites with Fe-containing magnetic nanoparticles (Fe3O4, Fe3C and Fe NPs) embedded into nano-porous carbon (NPC) through pyrolysis of Fe-based metal-organic frameworks (MOFs).
Journal ArticleDOI
Review on the electromagnetic interference shielding properties of carbon based materials and their novel composites: Recent progress, challenges and prospects
Nannan Wu,Qian Hu,Qian Hu,Renbo Wei,Xianmin Mai,Nithesh Naik,Duo Pan,Duo Pan,Zhanhu Guo,Zhengjun Shi +9 more
TL;DR: In this paper, a review of recent achievements for carbon materials with different microstructures as electromagnetic interference shielding materials (ESMs) and microwave absorption materials (MAMs) during the past five years is presented.
Journal ArticleDOI
Hollow porous CoNi/C composite nanomaterials derived from MOFs for efficient and lightweight electromagnetic wave absorber
TL;DR: In this article, a novel lightweight electromagnetic wave absorption material with the combination of hollow structure and bimetallic constituents by the thermal decomposition of metal−organic framework (MOF) ZIF-67 was designed and prepared.
Journal ArticleDOI
Core-shell FeCo@carbon nanoparticles encapsulated in polydopamine-derived carbon nanocages for efficient microwave absorption
TL;DR: In this paper, the authors used dopamine (DA) on their surface and then converted the precursor into desirable FeCo alloy/carbon composites to suppress the microstructure collapse of FeCo PBAs during high-temperature pyrolysis, resulting in a unique hierarchical configuration of coreshell FeCo@C nanoparticles encapsulated in PDA-derived carbon nanocages.
References
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