Facile fabrication of Fe/Fe3C@starch-derived hierarchical porous carbon for microwave absorption
The three-dimensional (3D) porous carbon materials are helpful for forming thin, light-weight, wide effective absorption bandwidth and strong absorption intensity absorbers. However, previous methods were not environmentally friendly enough. Thus, in this work, the Fe/Fe 3 C@porous carbon was synthe...
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Veröffentlicht in: | Journal of materials science. Materials in electronics 2024, Vol.35 (2), p.131, Article 131 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The three-dimensional (3D) porous carbon materials are helpful for forming thin, light-weight, wide effective absorption bandwidth and strong absorption intensity absorbers. However, previous methods were not environmentally friendly enough. Thus, in this work, the Fe/Fe
3
C@porous carbon was synthesized from soluble starch and Fe(NO
3
)
3
·9H
2
O via chemical bowling and subsequent carbonization at 700 °C with different ratios. When the ratio of starch to Fe(NO
3
)
3
·9H
2
O is 1:1.5, the porous carbon exhibits a strong absorption ability with minimum reflection loss (
RL
min
) value of −16.64 dB at 16.78 GHz, when the thickness is 1.75 mm and the proportion of paraffin wax is 30 wt%. The synergy of well impedance matching, sufficient loss performance, and interface polarization makes 3D porous carbon materials an excellent wave absorber. This work provides a good inspiration for studying outstanding performance microwave absorption materials. |
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ISSN: | 0957-4522 1573-482X |
DOI: | 10.1007/s10854-023-11830-8 |