Honey-comb carbon nanostructure derived from peach gum to yield high microwave absorption
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Honey-comb carbon nanostructure derived from peach gum to yield high microwave absorption Dan Zhao1, Qian Zhao1, Lan Feng1, Xiaoyan Yuan1, Yi Liu1, Jinying Zhang2, Guanglei Wu3,* , and Shou wu Guo1,4,* 1
School of Material Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi’an 710021, People’s Republic of China 2 State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710054, Shaanxi, People’s Republic of China 3 Institute of Materials for Energy and Environment, State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, People’s Republic of China 4 Department of Electronic Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
Received: 15 September 2020
ABSTRACT
Accepted: 30 October 2020
Lightweight and highly efficient electromagnetic absorptions are crucial for microwave absorption materials due to the fast development of information technology. Bio-derived carbon materials are ideal resistance loss-type microwave absorbers with lightweight. A honey-comb carbon structure has been obtained from peach gum by facile hydrothermal and pyrolysis processes. The skeleton of the as-derived honey-comb carbon structure is composed of carbon nanoparticles with diameters around 40 nm. The honey-comb structures were further carbonized at 850 °C (NPG-850) to have a large specific surface area of 1401.7 m2 g-1 with an average pore diameter of 3.2 nm. A minimum reflection loss (RL) of - 59.4 dB was obtained by NPG-850 at a thickness of 2.0 mm with an effective absorption bandwidth (EAB, RL \ - 10 dB) of 4.1 GHz (14.7–10.6 GHz). The RL value of the peach gum-derived honey-comb carbon nanostructures is much higher than the reported carbon nanostructures even with thinner thickness and less mass loading, which might due to the multireflection effect of the honey-comb structures and the skeleton composition.
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Springer Science+Business
Media, LLC, part of Springer Nature 2020
1 Introduction With the high-frequency use of electronic products [1], electromagnetic interference between electronic components and electromagnetic information leakage
become inevitable concerns [2–8]. The research of electromagnetic (EM) wave absorbing agents with relatively stronger absorptive capacity, wider effective absorption bandwidth (EAB), thinner thickness, and lighter weight have become the focus of many
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https://doi.org/10.1007/s10854-020-04804-7
J Mater Sci: Mater Electron
researchers. Carbonaceous materials with low density, excellent electric conductivity, and stable chemical properties can absorb EM waves by means of conductive loss. Various carbonaceous absorbents have be
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