This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Open AccessArticle
Facile Fabrication of Co-doped Porous Carbon from Coal Hydrogasification Semi-Coke for Efficient Microwave Absorption
by
Yan-Fang Li
Yan-Fang Li 1,2,*,
Li-Fang Wang
Li-Fang Wang 1,
Shu-Juan Gao
Shu-Juan Gao 1,2,
Tan-Lai Yu
Tan-Lai Yu 1,2,
Qi-Feng Li
Qi-Feng Li 3 and
Jun-Wei Wang
Jun-Wei Wang 3,*
1
Department of Chemical and Materials Engineering, Lyuliang University, Lvliang 033001, China
2
Institute of New Carbon-Based Materials and Zero-carbon and Negative-carbon Technology, Lyuliang University, Lvliang 033001, China
3
Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 033000, China
*
Authors to whom correspondence should be addressed.
Molecules 2024, 29(19), 4633; https://doi.org/10.3390/molecules29194633 (registering DOI)
Submission received: 5 September 2024
/
Revised: 26 September 2024
/
Accepted: 26 September 2024
/
Published: 29 September 2024
Abstract
A Co-doped porous carbon was successfully fabricated by a facile carbonizing procedure using coal hydrogasification semi-coke (SC) as the carbon and cobalt nitrate as the magnetic precursors, respectively. The mass ratio of the precursors was changed to regulate the microwave absorption (MA) capabilities. The favorable MA capabilities are a result of a synergistic interaction be-tween the dielectric loss from the carbon framework, the magnetic loss from nano-sized Co particles, and multiple scattering from the residual pores. At a thickness of 4.0 mm, the Co/C composite showed the lowest reflection loss of −33.45 dB when the initial mass ratio of cobalt nitrate and SC was 1:1. The effective absorbing bandwidth (EAB) could achieve 3.5 GHz at 2 mm thickness. This work not only opens up a new avenue for the facile fabrication of dielectric and magnetic loss combinations and their structural design, but it also creates a new route for the high value-added exploitation of SC.
Share and Cite
MDPI and ACS Style
Li, Y.-F.; Wang, L.-F.; Gao, S.-J.; Yu, T.-L.; Li, Q.-F.; Wang, J.-W.
Facile Fabrication of Co-doped Porous Carbon from Coal Hydrogasification Semi-Coke for Efficient Microwave Absorption. Molecules 2024, 29, 4633.
https://doi.org/10.3390/molecules29194633
AMA Style
Li Y-F, Wang L-F, Gao S-J, Yu T-L, Li Q-F, Wang J-W.
Facile Fabrication of Co-doped Porous Carbon from Coal Hydrogasification Semi-Coke for Efficient Microwave Absorption. Molecules. 2024; 29(19):4633.
https://doi.org/10.3390/molecules29194633
Chicago/Turabian Style
Li, Yan-Fang, Li-Fang Wang, Shu-Juan Gao, Tan-Lai Yu, Qi-Feng Li, and Jun-Wei Wang.
2024. "Facile Fabrication of Co-doped Porous Carbon from Coal Hydrogasification Semi-Coke for Efficient Microwave Absorption" Molecules 29, no. 19: 4633.
https://doi.org/10.3390/molecules29194633
Article Metrics
Article Access Statistics
For more information on the journal statistics, click
here.
Multiple requests from the same IP address are counted as one view.