Lightweight, Low-Cost Co2SiO4@diatomite Core-Shell Composite Material for High-Efficiency Microwave Absorption

Yifan Zhang; Rui Cai; Dashuang Wang; Kailin Li; Qing Sun; Yuntao Xiao; Hao Teng; Xiaohan Huang; Tao Sun; Zhaohui Liu; Kexin Yao; Yuxin Zhang; Pingan Yang

doi:10.3390/molecules27031055

Molecules (Feb 2022)

Lightweight, Low-Cost Co2SiO4@diatomite Core-Shell Composite Material for High-Efficiency Microwave Absorption

Yifan Zhang,
Rui Cai,
Dashuang Wang,
Kailin Li,
Qing Sun,
Yuntao Xiao,
Hao Teng,
Xiaohan Huang,
Tao Sun,
Zhaohui Liu,
Kexin Yao,
Yuxin Zhang,
Pingan Yang

Affiliations

Yifan Zhang: College of Material Science and Engineering, Chongqing University, Chongqing 400044, China
Rui Cai: School of Automation, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
Dashuang Wang: College of Material Science and Engineering, Chongqing University, Chongqing 400044, China
Kailin Li: College of Material Science and Engineering, Chongqing University, Chongqing 400044, China
Qing Sun: College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400045, China
Yuntao Xiao: College of Material Science and Engineering, Chongqing University, Chongqing 400044, China
Hao Teng: College of Material Science and Engineering, Chongqing University, Chongqing 400044, China
Xiaohan Huang: Department of Military Facilities, Army Logistics University of PLA, Chongqing 401311, China
Tao Sun: Department of Military Facilities, Army Logistics University of PLA, Chongqing 401311, China
Zhaohui Liu: Multi-scale Porous Materials Center, Institute of Advanced Interdisciplinary Studies, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400045, China
Kexin Yao: Multi-scale Porous Materials Center, Institute of Advanced Interdisciplinary Studies, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400045, China
Yuxin Zhang: College of Material Science and Engineering, Chongqing University, Chongqing 400044, China
Pingan Yang: School of Automation, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

DOI: https://doi.org/10.3390/molecules27031055
Journal volume & issue: Vol. 27, no. 3
p. 1055

Abstract

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The porous and biomimetic cobalt silicate@diatomite (Co2SiO4@diatomite) was successfully synthesized by a two-step method, including the hydrothermal method and calcination to improve the electromagnetic wave absorption property. Different hydrothermal times were well-tuned for Co2SiO4@diatomite composites with different loadings of Co2SiO4. Interestingly, the Co2SiO4@diatomite composites (6 h, 25 wt%) had a smaller minimum reflection loss. Moreover, the minimum reflection loss (RLmin) could reach −12.03 dB at 16.64 GHz and the matched absorber thickness was 10 mm, while the effective absorption bandwidth (EAB, RL ≤ −10 dB) could be 1.92 GHz. In principle, such findings indicate that Co2SiO4@diatomite nanocomposites could be a promising candidate for high-efficiency microwave absorption capability.

Published in Molecules

ISSN: 1420-3049 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Organic chemistry
Website: http://www.mdpi.com/journal/molecules

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