Study on the preparation of porous carbon from food waste biomass and the relationship between particle size distribution and electromagnetic wave absorption performance

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials Pub Date : 2025-03-27 DOI:10.1016/j.diamond.2025.112248

Anwen Ren , Yijun Liu , Zhihong Wu , Jijin Chang , Dan Niu , Peng Li , Jun Qi

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引用次数: 0

Abstract

With more and more troublesome matters of Electromagnetic Wave (EMW) interference, the problem of how to obtain low-cost, renewable, environmentally friendly, and excellent performance Electromagnetic Wave Absorption (EWA) materials attracts more interest from numerous sectors of society. In this paper, Shiitake Powder Derived Porous Carbon (SPDPC) which uses food waste shiitake as a precursor was synthesized by a two-step carbonization method, and its EWA performance was studied. The dielectric parameters were adjusted by changing the pore expansion temperature of biomass, KOH impregnation concentration, and SPDPC particle size distribution, to optimize the loss and absorption capacity of SPDPC. The filling content of mass of all samples in this experiment is 12.5 wt%, which meets the condition of low filling content. When the particle size ratio of large: small = 2:9, the Reflection Loss minimum (RL_min) of the sample SPDPC-4 is −65.61 dB at the matching thickness (the following is denoted by d) = 2.4 mm. When d is 2.2 mm, the maximum Effective Absorption Bandwidth (EAB) (RL ≤ -10 dB) of the sample SPDPC-9 is 4.2 GHz (8.2–12.4 GHz), including the entire X-band. Through this research, it is found that the particle size distribution can affect the dielectric parameters and packing mode of the material, and then affect the performance, so the appropriate particle size ratio can obtain the strongest EWA performance. This paper contributes to the development of eco-friendly and inexpensive biomass porous carbon EWA materials and provides a new thinking to study the effect of particle size distribution on the performance.

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来源期刊

Diamond and Related Materials 工程技术-材料科学：综合

CiteScore

6.00

自引率

14.60%

发文量

702

审稿时长

2.1 months

期刊介绍： DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices. The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.