Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 889, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2021.161716
Keywords
Loofahs; Cobalt; Graphene oxide; 3D hierarchical porous structure; Electromagnetic interference shielding
Categories
Funding
- Sichuan Science and Technology Program [2019YFG0261]
Ask authors/readers for more resources
The study utilized biomass carbon materials to construct an efficient electromagnetic wave shielding system, preparing carbonized loofahs/Co nanoparticles/graphene oxide composites with a 3D hierarchical porous structure through a thermal reduction process. The composites exhibited excellent electromagnetic interference shielding performance in the Ku-band frequency range, with improved dielectric and magnetic loss properties. This work may advance the application of biomass materials in the field of electromagnetic shielding.
Using biomass carbon materials to construct the electromagnetic wave shielding system is an efficient solution for electromagnetic interference pollution. In this study, carbonized loofahs/Co nanoparticles/ graphene oxide composites were prepared with a 3D hierarchical porous structure for efficient electromagnetic interference shielding by a facile and efficient thermal reduction process. The carbon matrix is inlaid with cobalt nanoparticles, promoting the graphitization of composites and the fabrication of a 3D conductive network. Simultaneously, the synergistic effect between nanoparticles and carbon matrix good electromagnetic properties, inducing the improvement in both dielectric and magnetic loss. As a result, the average shielding effectiveness and specific shielding effectiveness of composites reach 61.05 dB and 714.76 dB cm3/g within the frequency range of 12.4-18 GHz (Ku-band) separately, whose intense absorption loss and wideband response are superior to other composites based on biomass carbon. It is believed that this work may promote the application of biomass material in the field of electromagnetic shielding. (c) 2021 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available