A facile synthesis of bare biomass derived holey carbon absorbent for microwave absorption

Wang, Shipeng; Li, Qingsong; Hu, Kang; Wang, Sini; Liu, Qiangchun; Kong, Xiangkai

doi:10.1016/j.apsusc.2020.148891

Cited by 59 publications

(23 citation statements)

References 43 publications

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“…A decreasing trend of I D /I G ratio is obtained when continuously elevating the carbonization temperature from 600 to 800 °C, which indicates an increasing degree of crystallization. 49,50 All four XRD curves present two characteristic peaks. The wide diffraction peak at 23°corresponds to the (002) crystallographic plane of nanocrystalline graphite.…”

Section: Resultsmentioning

confidence: 99%

Protein-Derived Hybrid Carbon Nanospheres with Tunable Microwave Absorbing Performance in the X-Band

Zhu

et al. 2021

ACS Appl. Electron. Mater.

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Biomass-derived carbon absorbents are gaining increasing interest owing to their renewability, simple preparation, and unique electrical properties. However, the uncontrollability of both the composition and the morphology of the natural biomass precursor leads to inevitably poor reproducibility of the microwave absorbing (MA) performance for practical application. In this study, protein-derived hybrid carbon nanospheres (GCNs) were successfully synthesized using gelatin molecules as precursor units, and then they were mixed into resin to prepare composites with excellent MA properties. By tuning the carbonization temperature, both the crystallization degree and the elementary composition of the GCNs absorbents could be conveniently adjusted to balance various microwave attenuation mechanisms. The developed GCNs/resin composites exhibited a minimum reflection loss of −50.9 dB and effective absorption bandwidth of 3.5 GHz in the X-band. The excellent MA properties of the GCNs with tailored geometrical morphology and tunable composition provided a new inspiration for future development on biomass carbon-based microwave absorbing materials.

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Section: Resultsmentioning

confidence: 99%

Protein-Derived Hybrid Carbon Nanospheres with Tunable Microwave Absorbing Performance in the X-Band

Zhu

et al. 2021

ACS Appl. Electron. Mater.

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“…Due to the environmental friendliness, easy availability and low cost, many natural biomaterials have been used as carbon sources to prepare ultra-lightweight high-performance MAMs in recent years [ 143 – 145 ]. Despite their high dielectric constant, the biomaterial-derived porous carbon materials are lack of magnetic loss system and cannot achieve appropriate impendence matching [ 145 ]. Researchers often recombine biomaterials with other functional materials, especially magnetic materials, to explore superior MA properties.…”

Section: Mams Derived From Mof Compositesmentioning

confidence: 99%

State of the Art and Prospects in Metal-Organic Framework-Derived Microwave Absorption Materials

et al. 2022

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Microwave has been widely used in many fields, including communication, medical treatment and military industry; however, the corresponding generated radiations have been novel hazardous sources of pollution threating human’s daily life. Therefore, designing high-performance microwave absorption materials (MAMs) has become an indispensable requirement. Recently, metal–organic frameworks (MOFs) have been considered as one of the most ideal precursor candidates of MAMs because of their tunable structure, high porosity and large specific surface area. Usually, MOF-derived MAMs exhibit excellent electrical conductivity, good magnetism and sufficient defects and interfaces, providing obvious merits in both impedance matching and microwave loss. In this review, the recent research progresses on MOF-derived MAMs were profoundly reviewed, including the categories of MOFs and MOF composites precursors, design principles, preparation methods and the relationship between mechanisms of microwave absorption and microstructures of MAMs. Finally, the current challenges and prospects for future opportunities of MOF-derived MAMs are also discussed."Image missing"

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“…For example, carbon-based absorbents with holey structures prepared by Wang et al from waste biomass materials (corn cobs, bagasse and grapefruit peels) under air-calcination, showed a wide bandwidth of 5.5 GHz at a low filler loading of 8 wt% for microwave absorption. 384 Another interesting study by Zhou and group demonstrated the application of highly porous cotton linters-derived carbon aerogels towards EMI shielding. The conductive aerogel with reduced pore size and dense 3D sheet-like network exhibited a low density of 0.079 g cm −3 and high EMI shielding effectiveness of 93.1 dB along with EMW absorption in the frequency range of 8.2–12.4 GHz.…”

Section: Applications Of Nanoporous Carbonsmentioning

confidence: 99%

Recent advancement of biomass-derived porous carbon based materials for energy and environmental remediation applications

et al. 2022

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A facile synthesis of bare biomass derived holey carbon absorbent for microwave absorption

Cited by 59 publications

References 43 publications

Protein-Derived Hybrid Carbon Nanospheres with Tunable Microwave Absorbing Performance in the X-Band

Protein-Derived Hybrid Carbon Nanospheres with Tunable Microwave Absorbing Performance in the X-Band

State of the Art and Prospects in Metal-Organic Framework-Derived Microwave Absorption Materials

Recent advancement of biomass-derived porous carbon based materials for energy and environmental remediation applications

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