Carbonized Design of Hierarchical Porous Carbon/Fe3O4@Fe Derived from Loofah Sponge to Achieve Tunable High-Performance Microwave Absorption
By Huagao Wang, F. Meng, Jinyang Li, Tian Li, Zijian Chen, Huabin Luo, Zuowan Zhou. ACS Sustainable Chemistry and Engineering, 2018
291 citations recorded by the source corpus.
Recently, three-dimensional (3D) porous carbon materials derived from biomass have been gaining interest as promising microwave absorbers due to their low cost, vast availability, and sustainability of biomasses. Herein, a novel strategy of utilizing loofah sponge as 3D hierarchical porous carbon precursors and ferric nitrate as magnetic precursor to prepare magnetic hierarchical porous carbon composites, which exhibit tunable high-performance microwave absorption (MA). During the carbonization process, the 3D-bundled microtube structure of loofah sponge changes into interconnected networks with hierarchical porous structures, and the precursor ferric nitrate converts into magnetic Fe3O4@Fe nanoparticles. As expected, the as-obtained loofah sponge-derived 3D porous carbon/Fe3O4@Fe composites treated at 600 °C exhibit outstanding MA performance. It displays the minimum reflection loss (RL) of −49.6 dB with a thickness of 2 mm, and the effective absorption bandwidth (RL≤ 10 -dB) can reach 5.0 GHz (from 13 t...
Subfields: Aerospace Engineering, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/534fc6b929b8f31d768333c8644c714a59891018
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Citations in the corpus
- Achieving superior electromagnetic wave absorbers through the novel metal-organic frameworks derived magnetic porous carbon nanorods (2019, background): “The space charges tend to accumulate at the heterointerfaces and produce dipole moments that lead to interfacial polarization [49,50].”