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Controllable synthesis of nitrogen-doped porous Fe3C@C nanocomposites for efficient microwave absorption.
- Source :
-
Journal of Alloys & Compounds . Sep2023, Vol. 955, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- Three-dimensional (3D) porous carbon-based materials are commonly considered to be a hopeful microwave absorbing materials owing to their lightweight and broadband absorption. However, the structure between dissipation mechanism is still not clear. Therefore, in this work, the nitrogen-doped porous Fe 3 C@C nanocomposites derived from Fe(NO 3) 3 ·9 H 2 O and polyvinyl pyrrolidone (PVP) were fabricated through pre-blowing followed by in situ carbonization method with various temperatures. The obtained material treated at 600 °C, which the content of N was 4.07 %, exhibits the most excellent microwave absorption (MA) property with the minimal reflection loss of − 63.1 dB at 5.0 GHz while the matching thickness is 4.6 mm. The MA performance of the composite is originated from the synergy of magnetic-dielectric loss and improved interfacial polarization. This research provides a way to prepare high-property MA absorbers. [Display omitted] ● Fe 3 C@ porous carbon was successfully synthesized via a facile strategy. ● The microstructure and Fe 3 C particles ensure the excellent absorption performance. ● The RL min of PC-600 with 4.6 mm thickness is − 63.1 dB. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 955
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 163636937
- Full Text :
- https://doi.org/10.1016/j.jallcom.2023.170184