Sustainable Microwave Absorbing Material based on Macadamia Nutshell Derived Porous Carbon
文献类型: 外文期刊
作者: Cui, Haipeng 1 ; Zhao, Pengfei 1 ; Hu, Benxiang 1 ; Long, Aichun 1 ; He, Simin 1 ; Chen, Guojing 1 ; Liao, Lusheng 2 ; Liao, Jianhe 1 ; Zhao, Yanfang 1 ;
作者机构: 1.Hainan Univ, Sch Mat Sci & Engn, Ctr Nat Rubber Cooperat Innovat, Hainan Prov & Minist Educ, Haikou 570228, Hainan, Peoples R China
2.Chinese Acad Trop Agr Sci, Agr Prod Proc Res Inst, Minist Agr & Rural Afairs, Key Lab Trop Crop Prod Proc, Zhanjiang 524001, Peoples R China
关键词: Biomass-derived porous carbon; macadamia nutshell; hierarchical nanostructure; microwave absorbing performance
期刊名称:NANO ( 影响因子:1.438; 五年影响因子:1.374 )
ISSN: 1793-2920
年卷期: 2022 年 17 卷 02 期
页码:
收录情况: SCI
摘要: Increasingly severe electromagnetic pollution problem boosts the demand for light weight microwave absorbing materials with high absorption capacity over wide frequency range. Biomass-derived porous carbon has been regarded as one of the promising candidates for microwave attenuation as the biomaterials are vastly available and renewable. Here, macadamia nutshell derived porous carbon (MPC) was fabricated by activated carbonization. Evidenced by the morphological results, the resulted MPC demonstrates three-dimensional frameworks with tubular skeletons. Owing to such hierarchical structures, the resulted composite MPC-filled paran composites exhibit a minimum reflection loss of - 44.14 dB and effective absorption bandwidth of 3.84 GHz. Moreover, the resulted MPC can be explored as a practical absorber in a frequency range of 3.68-18.00 GHz via tuning of the thickness. The analysis of microwave attenuation mechanism indicates that such outstanding microwave absorption capacity is attributed to hierarchical structure tuned impedance matching conditions and multiple attenuation mechanisms. All results in this work open the avenue for the development of nutshell derived sustainable microwave absorber with high absorption capacity as well as broad effective absorption bandwidth, boosting the utilizing of biomass resources.
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