A resilient and lightweight bacterial cellulose-derived C/rGO aerogel-based electromagnetic wave absorber integrated with multiple functions

Bai, Tiantian; Guo, Yan; Wang, Dedong; Liu, Hu; Song, Gang; Wang, Yaming; Guo, Zhanhu; Liu, Chuntai; Shen, Changyu

doi:10.1039/d0ta11122h

Cited by 70 publications

(24 citation statements)

References 57 publications

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“…The attenuation constant vs frequency for various foam samples is presented in Figure f. The attenuation constant α can be expressed in the following equation where c is the velocity of light.…”

Section: Resultsmentioning

confidence: 99%

In Situ Coating of Needle-like NiCo₂O₄ Magnetic Nanoparticles on Lightweight Reticulated Vitreous Carbon Foam toward Achieving Improved Electromagnetic Wave Absorption

Yadav

Bagal

Parmar

et al. 2021

Ind. Eng. Chem. Res.

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To improve electromagnetic (EM) wave attenuation and its absorption properties, herein, for the first time, we grow needle-like magnetic NiCo2O4 nanoparticles in situ on lightweight open cell reticulated vitreous carbon (RVC) foam by the hydrothermal method, leading to hierarchically nanostructured foam. The foam was synthesized by the carbonization of flexible polyurethane foam followed by acid treatment. The coating structure, stability, and performance were systematically investigated by various complementary techniques using XRD, XPS, Raman, and FTIR spectroscopies, compression test, and ultrasonication. The foam coated for 12 h exhibited considerably improved shielding effectiveness (SE), i.e., ∼36 dB from ∼23 dB for the bare RVC foam in the X-band, leading to ∼99.97% shielding efficiency. Although the foams mainly showed reflection-dominated properties regardless of the coating, the EM absorption improved with coating. The shielding mechanism is explained by means of reflection and absorption coefficients and dielectric and magnetic losses manifested by NiCo2O4 coating and interfacial polarization.

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Section: Resultsmentioning

confidence: 99%

In Situ Coating of Needle-like NiCo₂O₄ Magnetic Nanoparticles on Lightweight Reticulated Vitreous Carbon Foam toward Achieving Improved Electromagnetic Wave Absorption

Yadav

Bagal

Parmar

et al. 2021

Ind. Eng. Chem. Res.

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“…11b, CCA achieved an RL min of −43.6 dB and a wide EAB of 7.42 GHz at 3 mm. Likewise, cellulose was also selected by Liu's group [126]. They developed a cellulose-derived C/rGO aerogel as an EMW absorber with multifunctionalities.…”

Section: Reviewsmentioning

confidence: 99%

Recent advance in three-dimensional porous carbon materials for electromagnetic wave absorption

et al. 2022

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With the increasingly serious electromagnetic wave (EMW) pollution, the development of high-performance EMW absorbing materials (EWAMs) has become a hot topic. Carbon-based EWAMs have excellent chemical stability, high electrical conductivity, and strong dielectric loss. In particular, three-dimensional (3D) porous carbon-based EWAMs have been widely developed in the EMW absorption field. The 3D porous structure not only reduces the materials' mass density, but also improves the multiple reflections of incident EMWs and impedance matching. The carbon-based EWAMs are thus expected to achieve the goals of low density, low thickness, wide absorption bandwidth, and strong absorption. Herein, we first restated the relevant theoretical basis and evaluation methods. Then, we summarized the recent research progress of 3D porous carbon-based EWAMs with the source of the materials as the main clue. Some unique and novel viewpoints were highlighted. Finally, the challenges and prospects of 3D porous carbon-based EWAMs were put forward, which is helpful for guiding a further development of high-performance EWAMs.

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“…Also, biomass materials with the intrinsic porous structures and abundant defects formed by the post-activation treatment are considered as high-quality raw materials for the preparation of low-cost pollution-free renewable absorbers, which can not only support multi-interfacial heterostructures inside the absorbers but also can be combined with other materials to modulate the EM parameters. 7–9…”

Section: Introductionmentioning

confidence: 99%

Marine polysaccharide-based electromagnetic absorbing/shielding materials: design principles, structure, and properties

Wang

Xiao

et al. 2022

J. Mater. Chem. A

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A resilient and lightweight bacterial cellulose-derived C/rGO aerogel-based electromagnetic wave absorber integrated with multiple functions

Abstract: A resilient and lightweight bacterial cellulose-derived C/rGO aerogel-based electromagnetic wave absorber integrated with multiple functions such as piezoresistive sensing, infrared stealth, thermal insulation, and Joule heating.

Cited by 70 publications

References 57 publications

In Situ Coating of Needle-like NiCo₂O₄ Magnetic Nanoparticles on Lightweight Reticulated Vitreous Carbon Foam toward Achieving Improved Electromagnetic Wave Absorption

In Situ Coating of Needle-like NiCo₂O₄ Magnetic Nanoparticles on Lightweight Reticulated Vitreous Carbon Foam toward Achieving Improved Electromagnetic Wave Absorption

Recent advance in three-dimensional porous carbon materials for electromagnetic wave absorption

Marine polysaccharide-based electromagnetic absorbing/shielding materials: design principles, structure, and properties

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A resilient and lightweight bacterial cellulose-derived C/rGO aerogel-based electromagnetic wave absorber integrated with multiple functions

Abstract: A resilient and lightweight bacterial cellulose-derived C/rGO aerogel-based electromagnetic wave absorber integrated with multiple functions such as piezoresistive sensing, infrared stealth, thermal insulation, and Joule heating.

Cited by 70 publications

References 57 publications

In Situ Coating of Needle-like NiCo2O4 Magnetic Nanoparticles on Lightweight Reticulated Vitreous Carbon Foam toward Achieving Improved Electromagnetic Wave Absorption

In Situ Coating of Needle-like NiCo2O4 Magnetic Nanoparticles on Lightweight Reticulated Vitreous Carbon Foam toward Achieving Improved Electromagnetic Wave Absorption

Recent advance in three-dimensional porous carbon materials for electromagnetic wave absorption

Marine polysaccharide-based electromagnetic absorbing/shielding materials: design principles, structure, and properties

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Product

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In Situ Coating of Needle-like NiCo₂O₄ Magnetic Nanoparticles on Lightweight Reticulated Vitreous Carbon Foam toward Achieving Improved Electromagnetic Wave Absorption

In Situ Coating of Needle-like NiCo₂O₄ Magnetic Nanoparticles on Lightweight Reticulated Vitreous Carbon Foam toward Achieving Improved Electromagnetic Wave Absorption