1. Lightweight, Low-Cost Co 2 SiO 4 @diatomite Core-Shell Composite Material for High-Efficiency Microwave Absorption.
- Author
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Zhang, Yifan, Cai, Rui, Wang, Dashuang, Li, Kailin, Sun, Qing, Xiao, Yuntao, Teng, Hao, Huang, Xiaohan, Sun, Tao, Liu, Zhaohui, Yao, Kexin, Zhang, Yuxin, and Yang, Pingan
- Subjects
ELECTROMAGNETIC wave absorption ,MICROWAVE materials ,COMPOSITE materials ,CARBON dioxide ,BIOMIMETIC materials ,ABSORPTION - Abstract
The porous and biomimetic cobalt silicate@diatomite (Co
2 SiO4 @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 Co2 SiO4 @diatomite composites with different loadings of Co2 SiO4 . Interestingly, the Co2 SiO4 @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 Co2 SiO4 @diatomite nanocomposites could be a promising candidate for high-efficiency microwave absorption capability. [ABSTRACT FROM AUTHOR]- Published
- 2022
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