Lightweight, Low-Cost Co 2 SiO 4 @diatomite Core-Shell Composite Material for High-Efficiency Microwave Absorption

The porous and biomimetic cobalt silicate@diatomite (Co SiO @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 Co SiO @diatomite com...

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Bibliographic Details
Published inMolecules (Basel, Switzerland) Vol. 27; no. 3
Main Authors Zhang, Yifan, Cai, Rui, Wang, Dashuang, Li, Kailin, Sun, Qing, Xiao, Yuntao, Teng, Hao, Huang, Xiaohan, Sun, Tao, Liu, Zhaohui, Yao, Kexin, Zhang, Yuxin, Yang, Pingan
Format Journal Article
LanguageEnglish
Published Switzerland 05.02.2022
Subjects
diatomite
nanomaterial
Co2SiO4
electromagnetic wave absorption
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Summary:The porous and biomimetic cobalt silicate@diatomite (Co SiO @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 Co SiO @diatomite composites with different loadings of Co SiO . Interestingly, the Co SiO @diatomite composites (6 h, 25 wt%) had a smaller minimum reflection loss. Moreover, the minimum reflection loss (RL ) 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 Co SiO @diatomite nanocomposites could be a promising candidate for high-efficiency microwave absorption capability.
ISSN:1420-3049