Biomass derived porous carbon (BPC) and their composites as lightweight and efficient microwave absorption materials

Guan, Hongtao; Wang, Qiuyue; Wu, Xiaofen; Pang, Jie; Jiang, Zhiyang; Chen, Gang; Dong, Chengjun; Wang, Lihong; Gong, Chunhong

doi:10.1016/j.compositesb.2020.108562

Cited by 212 publications

(66 citation statements)

References 275 publications

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“…A higher I D / I G ratio of PPy-19 indicates richness in its structural defects and disorders due to the introduction of PS in the reduction process. The defects and disorders will result in higher attenuation of the incident electromagnetic energy, which is favorable for EMW absorption of the absorbers [ 3 ].…”

Section: Resultsmentioning

confidence: 99%

“…With the rapid development of technology, the widespread use of high-frequency and high-power electrical equipment will inevitably cause electromagnetic interference (EMI) and electromagnetic pollution. This inspires researchers to design and fabricate excellent electromagnetic-wave (EMW)-absorbing materials or microwave-absorbing materials (MAMs) to eliminate the harm brought about by electromagnetic pollution and guarantee the safety of electronic devices [ 1 , 2 , 3 ]. Generally, two critical indicators are employed to characterize the electromagnetic-absorbing performance of a MAM.…”

Section: Introductionmentioning

confidence: 99%

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Polystyrene-Modulated Polypyrrole to Achieve Controllable Electromagnetic-Wave Absorption with Enhanced Environmental Stability

Huang

et al. 2022

Nanomaterials

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The moderation of the dielectric properties of polymer composites and their environmental stability need to be considered comprehensively in the design of microwave-absorbing materials. In this work, polypyrrole/polystyrene (PPy/PS) composited particles were synthesized through a facile in situ bulk polymerization procedure. The PS component can be modulated conveniently by controlling the polymerization time. FTIR and Raman analyses disclosed that the PS component was immobilized in PPy via covalent bonds. The electromagnetic characterization results indicated that the dielectric properties and, thus, the microwave absorption could be controlled when the styrene polymerization was prolonged from 6 h (PPy-6) to 19 h (PPy-19). The composite PPy-19 displayed an optimal reflection loss of −51.7 dB with a matching thickness of 3.16 mm, and the effective absorption bandwidth (EAB) even reached 5.8 GHz at 2.4 mm. The PS component endowed PPy/PS composites with more robust environmental stability than homogeneous PPy. After being exposed to air for 365 days and hydrothermally treated at 100 °C for 12 h, PPy-19 still exhibited a reflection loss superior to −20 dB. The present work provides a new insight into the adjustment of the electromagnetic properties of PPy composites to fabricate high-performance microwave absorbers with superior environmental stability.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Polystyrene-Modulated Polypyrrole to Achieve Controllable Electromagnetic-Wave Absorption with Enhanced Environmental Stability

Huang

et al. 2022

Nanomaterials

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“…Therefore, whether it is for consideration of property safety or personal safety, it is very necessary to solve the problem of EM pollution [8][9][10][11]. In addition, advanced military weapons such as fighters need to be able to evade enemy detection and attack, and EM stealth technology is an efficient strategy [12][13][14]. EM stealth can be achieved by coating EM wave absorber (EMWA) on military equipment to make enemy radar undetectable.…”

Section: Introductionmentioning

confidence: 99%

A review on one-dimensional carbon-based composites as electromagnetic wave absorbers

Jia

Liang

Chen

et al. 2021

J Mater Sci: Mater Electron

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Electromagnetic (EM) wave technology has greatly promoted the development of information industry and facilitated human life. At the same time, EM pollution caused by excessive use of EM waves will endanger human health and disrupt the normal operation of instruments. Therefore, compelling immediate action needs to be taken to solve EM pollution and interference problem. Onedimensional carbon has become a potential candidate to solve these problems because of its high dielectric loss, significant thermodynamic stability, high specific surface area, and low density. In this paper, the application of onedimensional carbon materials and magnetic materials and dielectric materials in absorbing EM waves is introduced, and the future development direction is prospected, which provides some feasible ideas for more scientists.

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“…However, the uncontrollability of innate morphologies and composition of biomass precursor influenced by various factors during cultivation in natural environmental conditions are still enormous challenges for practical application, as assembly of a predetermined composition and microstructure is obviously of more profound significance. 40 Gelatin is a renewable commercial protein typically extracted from bovine skin. It is commonly used as a building block to construct structures of microspheres or nanospheres acting as drug carriers in the biomedical field.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, biomass-derived carbon was recently developed as microwave absorbents owning to its renewability, simple processing, and tunable electrical properties. − A variety of sources including waxberry, fish skin, , spinach, and walnut shell were applied to produce biomass-derived carbon absorbents with excellent MA performance. However, the uncontrollability of innate morphologies and composition of biomass precursor influenced by various factors during cultivation in natural environmental conditions are still enormous challenges for practical application, as assembly of a predetermined composition and microstructure is obviously of more profound significance …”

Section: Introductionmentioning

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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Biomass derived porous carbon (BPC) and their composites as lightweight and efficient microwave absorption materials

Cited by 212 publications

References 275 publications

Polystyrene-Modulated Polypyrrole to Achieve Controllable Electromagnetic-Wave Absorption with Enhanced Environmental Stability

Polystyrene-Modulated Polypyrrole to Achieve Controllable Electromagnetic-Wave Absorption with Enhanced Environmental Stability

A review on one-dimensional carbon-based composites as electromagnetic wave absorbers

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

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