期刊
SCIENCE CHINA-MATERIALS
卷 63, 期 10, 页码 2050-2061出版社
SCIENCE PRESS
DOI: 10.1007/s40843-020-1333-9
关键词
electromagnetic wave absorber; MOF; Prussian blue's analogs; topology; pyrolysis
资金
- National Natural Science Foundation of China [21875190]
- Polymer Electromagnetic Functional Materials Innovation Team of Shaanxi Sanqin Scholars
- Natural Science Basic Research Plan in Shaanxi Province of Distinguished Young Scholar [2018JC-008]
- China Postdoctoral Science Foundation [2018M643724]
Advanced electromagnetic (EM) wave absorbing materials with strong absorption and broad bandwidth are important for military stealth and elimination of microwave pollution in consumers' electronics. Metal organic framework (MOF)-derived metal/carbon hybrids with ordered structure are significantly urgent in this field. In this contribution, we presented a design strategy of hollow cage-like or solid box-like magnetic/dielectric Fe/Co/C and dielectric Fe/Mn/C EM wave absorbing nanomaterialsviapyrolyzing Prussian blue's analogs with controllable topology and phase composition. The solid box-like Fe/Co/C and hollow cage-like Fe/Mn/C showed favorable absorption property with a broad effective absorption bandwidth (EAB) and a low reflection loss (RL). Especially, the EAB of 8.8 GHz at a thickness of 2.5 mm for solid box-like Fe/Co/C nanocomplex prepared at 900 degrees C is a new record for this type of materials. The design and tuning strategy for EM wave absorbers derived from topology-controllable MOF is important for EM functional materials possessing great potential in military stealth and consumers' electronics.
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