AUTHOR=Wang Jijun , Chen Yuhua , Wei Yaxing , Li Yan , Li Fangyuan , Li Bingzhen , Wu Qingqing , Zhao Jinlong 

TITLE=Enhancement of microwave absorption performance of porous carbon induced by Ce (CO3) OH

JOURNAL=Frontiers in Chemistry

VOLUME=10

YEAR=2023

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2022.1100111

DOI=10.3389/fchem.2022.1100111

ISSN=2296-2646

ABSTRACT=<p>In recent years, electromagnetic pollution has become more and more serious, resulting in a very negative impact on people’s health. Therefore, it is important to develop efficient microwave absorbers to reduce electromagnetic pollution. Here, we construct a novel absorbing material of the polymer gel-derived porous carbon decorated by rare earth compounds (Ce (CO<sub>3</sub>) OH). When the thickness is 2.2 mm, the composite exhibits excellent microwave absorption performance with the optimal RL<sub>min</sub> value and EAB reached up to −47.67 dB and 5.52 GHz, respectively, covering the Ku band. The high-efficiency microwave absorption is mainly attributed to the synergistic effect of dipole polarization, defect polarization and interfacial polarization. This work not only provides a new view for designing superior absorber materials, but also lay a foundation for their real applications.</p>