Journal
MATERIALS LETTERS
Volume 316, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2022.132060
Keywords
Carbon materials; Nanoparticles; Microstructure; Interfaces
Funding
- National Natural Science Foundation of China [U20A20233]
- Fundamental Research Funds for the Central Universities [02080022121017]
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Magnetic carbon materials derived from metal organic frameworks (MOFs) have attracted extensive attention for their potential use in electromagnetic wave absorption. In this study, spindle-like Fe-MOFs with different compositions and microstructures were synthesized by adjusting the pyrolysis temperature. The hierarchical spindle-like Fe3O4@C composite prepared at 600 degrees C (H600) exhibits intriguing electromagnetic wave absorption performance due to the synergy of carbon framework, Fe3O4 microspheres, and the unique hierarchical porous structure. The maximum reflection loss achieved is -54.9 dB and the effective absorbing bandwidth extends from 11.1 to 17.6 GHz at a thickness of 2.61 mm.
Magnetic carbon materials derived from metal organic frameworks (MOFs) have aroused extensive concern for electromagnetic wave absorbing application. In this study, we synthesized spindle-like Fe-MOF to acquire different compositions and microstructures by adjusting the pyrolysis temperature. The hierarchical spindle-like Fe3O4@C composite prepared at 600 degrees C (H600) possesses intriguing electromagnetic wave (EMW) absorption performance due to subtle synergy of carbon framework and Fe3O4 microspheres, as well as uniquely hierarchical porous structure. The maximum reflection loss of -54.9 dB is achieved and effective absorbing bandwidth (EAB) can attain 6.5 GHz (11.1-17.6 GHz) at 2.61 mm.
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