Graphene prepared by flash joule heating from biowaste for microwave absorption

Congli Zhou

doi:10.1117/12.2674021

9 March 2023 Graphene prepared by flash joule heating from biowaste for microwave absorption

Congli Zhou

Proceedings Volume 12600, International Conference on Optoelectronic Materials and Devices (ICOMD 2022); 126001O (2023) https://doi.org/10.1117/12.2674021
Event: 2022 International Conference on Optoelectronic Materials and Devices, 2022, Chongqing, China

Abstract

Flash joule heating (FJH) has been demonstrated to produce high-quality graphene. In this work, graphene (B-Gr) was successfully prepared from biowaste bagasse by FJH. The product was characterized by transmission electron microscopy, X-ray powder diffraction technique and Raman spectroscopy. When the filler loading of B-Gr was 15 wt.%, the minimum reflection loss reached 39.1 dB at 5.9 GHz with effective absorption bandwidth of 1.7 GHz at the thickness of 4 mm. The remarkable microwave absorption (MA) performance could be attributed to the excellent impedance matching. This work makes it possible to upgrade negative-value biowaste into high-value powder fillers for MA.

Citation Download Citation

Congli Zhou "Graphene prepared by flash joule heating from biowaste for microwave absorption", Proc. SPIE 12600, International Conference on Optoelectronic Materials and Devices (ICOMD 2022), 126001O (9 March 2023); https://doi.org/10.1117/12.2674021

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