Composite microwave absorber of nitrogen-doped mango peel derived porous carbon wrapped by Co/FeCo nanoparticles
Source abstract
Abstract
In this study, we successfully synthesized N-doped porous carbon material derived from mango peel, decorated with Co/FeCo nanoparticles, using a hydrothermal method followed by high-temperature carbonization. The resulting Co/FeCo/NPC nanocomposites achieved optimal reflection loss of − 48.4 dB and effective absorption bandwidth of 5.23 GHz in the X band, at 10% filling ratio and matching thickness of 3.4 mm. Furthermore, by optimizing the thickness, the absorption peaks facilitate lower frequencies of C-band, with optimal reflection loss of − 40.30 dB at 5.68 GHz. These remarkable EMW attenuation characteristics are attributed to strong magnetic loss, multiple heterogeneous interface polarization, dipole polarization, and optimal impedance matching. Moreover, coatings based on the Co/FeCo/NPC-3 nanocomposite demonstrated that the radar cross-section was decreased by up to 20.82 dBm 2 , indicating possible radar-absorbing application.
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Research context
OpenAlex topics: Electromagnetic wave absorption materials · Advanced Antenna and Metasurface Technologies · Magnetic Properties and Synthesis of Ferrites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (64)
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