Novel carbon nanofibers build boron carbonitride porous architectures with microwave absorption properties

•BCN porous architectures were synthesized via a simple precursor pyrolysis method.•The reflection values below −20 dB were obtained in the range of 5.6–12.6 GHz.•The optimal value is −56.2 dB showing great microwave absorption properties.

Boron Carbonitride (BCN) porous architectures build by carbon nanofibers and BCN precursor were successfully synthesized via a simple precursor pyrolysis method. Scanning electron microscope (SEM) and BET results showed the BCN porous architectures having the pore size distribution ringing from 50 nm to 24 microns in diameter. Fourier transform infrared (FT-IR) and X-ray diffractometer (XRD) results indicate that the products have the chemical composition of h-BCN and graphite. The minimum reflection loss and the frequency bandwidth below −20 dB for BCN are −56.2 dB and 7.7 GHz respectively, indicating better microwave absorption properties.

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