Journal
COMPOSITES PART B-ENGINEERING
Volume 207, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2020.108562
Keywords
Biomass porous carbon (BPC); Microwave absorbing materials (MAMs); Effective absorption bandwidth (EAB); Reflection loss (RI); Absorption mechanism
Funding
- National Natural Science Foundation of China [11564042, 21671057, U1704253]
- Application Basic Research Fund of Yunnan Province [2019FB129, 202001BB050055]
- Program for Innovative Research Team (in Science and Technology) in University of Yunnan Province
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This article reviews the recent progress in microwave absorption properties of biomass derived porous carbon (BPC)-based materials. It summarizes the general synthesizing approaches for carbon materials from various biomass sources, discusses the performance of pure BPC as a microwave absorber, and explores strategies to enhance the microwave absorption properties of BPC.
With the pursuit of high-efficiency microwave absorbing materials (MAMs), biomass derived porous carbon (BPC)-based materials have attracted a great deal of attentions due to their plentiful resources, low density and highly environment-friendly. The microwave absorption of BPC composites is closely correlated to their composition, surface chemical activity, microstructures, and pore size, which are in turn decisively determined by the biomass precursors and subsequent carbonization or activation. In this article, we provide a timely and comprehensive review on recent achievements for the microwave absorption properties of various BPC-based MAMs. Firstly, the general synthesizing approaches for carbon materials from various biomass sources, especially in relation to the carbonization and activation are summarized. Then, based on the basic microwave absorption theory, the performances of pure BPC served as microwave absorber are presented. After that, the strategies to improve the microwave absorption properties of BPC including heteroatom doping and the formation of composites with magnetic metals, metal oxides, polymers, and so on, are discussed as well. Finally, we provide discussions and prospects for the development of BPC as lightweight and efficient MAMs in the further. It is believed that the current progress in experimental investigations combined with theoretical predictions will greatly promote the design and development of lightweight and efficient MAMs. Moreover, as an important type of MAMs, views on the challenges and prospects of BPC-based MAMs are proposed as well.
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