MXene/wood-derived hierarchical cellulose scaffold composite with superior electromagnetic shielding

Wang, Zhenxing; Han, Xiaodong; Han, Xuewen; Chen, Zhibing; Wang, Sijie; Pu, Junwen

doi:10.1016/j.carbpol.2020.117033

Cited by 62 publications

(20 citation statements)

References 65 publications

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“…Commonly, the total SE (SET) is used to represent the shielding performance, which consisted of three parts: reflection (SE R ), absorption (SE A ), and multiple internal reflection (SE M ). In particular, SE M could be negligible when SE T is greater than 15 dB. , Here, the EMI SE values at the radial orientation were first calculated (Figure D). First, with the graphitization degree increasing dramatically from PC to Fe/PC, it can be noted that the SE values of Fe/PC are all far higher than that of the PC sample.…”

Section: Results and Discussionmentioning

confidence: 99%

Wood-Derived Porous Carbon/Iron Oxide Nanoparticle Composites for Enhanced Electromagnetic Interference Shielding

Yan

Zhang

et al. 2022

ACS Appl. Nano Mater.

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Biomass materials have attracted attention in optimizing electromagnetic interference (EMI) shielding effectiveness (SE) ascribed to their high electric conductivities and reinforced polarization effects. Here, a wood-derived magnetic nanoparticle/porous carbon (PC) composite was fabricated via an in situ microwave-assisted pyrolysis approach. The unique anisotropic porous structures inherited from natural woods act as the three-dimensional conductive network and incorporate the magnetic iron oxide (γ-Fe 2 O 3 ) nanoparticles homogeneously embedded within the matrixes that can further improve the electromagnetic absorption abilities. As a result, the Fe/PC composites demonstrate an optimized EMI SE of 44.80 dB at the regions of 8.2−12.4 GHz (X-band) with a thickness of 3 mm, while the normalized SE (EMI SE/volume) could reach 61.88 dB/ cm 3 . Meanwhile, the multifunctional characteristics such as low density (0.271 g/cm 3 ), hydrophobicity (water contact angle 132.2°), and mechanical stability (compression strength 11.1 MPa) can be achieved in Fe/PC composites, promising a great potential for future engineering applications.

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Section: Results and Discussionmentioning

confidence: 99%

Wood-Derived Porous Carbon/Iron Oxide Nanoparticle Composites for Enhanced Electromagnetic Interference Shielding

Yan

Zhang

et al. 2022

ACS Appl. Nano Mater.

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“…GO, graphene oxide; PAAm, polyacrylamide; PVA, polyvinyl alcohol; rGO, reduced graphene oxide Scientists employed many approaches to mimic this structure utilizing various nanomaterials, including graphene, [159][160][161][162][163] MXene, 164 and nanoclay. 165 Recently, 2D MXene-based bioinspired materials have shown promise in mimicking nacre-like nanocomposite structures and found extensive electronic applications in EMI shielding 36,166,167 and sensors. 45,168 In a recent study, Cao et al 35 integrated d-Ti 3 C 2 T x MXene into cellulose nanofibers (CNFs) and produced a nacre-like layered composite paper via the process of vacuum-assisted filtration-assembly (Figure 4A).…”

Section: Bioinspired/biomimetic Structuresmentioning

confidence: 99%

“…Recently, 2D MXene‐based bioinspired materials have shown promise in mimicking nacre‐like nanocomposite structures and found extensive electronic applications in EMI shielding 36,166,167 and sensors 45,168 . In a recent study, Cao et al 35 integrated d‐Ti 3 C 2 T x MXene into cellulose nanofibers (CNFs) and produced a nacre‐like layered composite paper via the process of vacuum‐assisted filtration‐assembly (Figure 4A).…”

Section: Mxene‐enabled Device Architecturesmentioning

confidence: 99%

Two‐dimensional MXenes: New frontier of wearable and flexible electronics

Ahmed

Sharma

Adak³

et al. 2022

InfoMat

120

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Wearable electronics offer incredible benefits in mobile healthcare monitoring, sensing, portable energy harvesting and storage, human-machine interactions, etc., due to the evolution of rigid electronics structure to flexible and stretchable devices. Lately, transition metal carbides and nitrides (MXenes) are highly regarded as a group of thriving two-dimensional nanomaterials and extraordinary building blocks for emerging flexible electronics platforms because of their excellent electrical conductivity, enriched surface functionalities, and large surface area. This article reviews the most recent developments in MXene-enabled flexible electronics for wearable electronics. Several MXeneenabled electronic devices designed on a nanometric scale are highlighted by drawing attention to widely developed nonstructural attributes, including 3D configured devices, textile and planer substrates, bioinspired structures, and printed materials. Furthermore, the unique progress of these nanodevices is highlighted by representative applications in healthcare, energy, electromagnetic interference (EMI) shielding, and humanoid control of machines. The emerging prospects of MXene nanomaterials as a key frontier in nextgeneration wearable electronics are envisioned and the design challenges of these electronic systems are also discussed, followed by proposed solutions.

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“…Renewable resources, especially the biomass, have attracted much attention of researchers due to the growing public awareness of environmental issues. − Industrial lignin, originating from the byproducts of paper industry and wood hydrolysate, mainly includes the alkali lignin and lignosulfonate. , However, the structure of lignin from this category is significantly altered and lacks high-value-added applications. In this case, the modification of lignin is uncontrolled due to the formation of complex structures, which impede its further commercial application.…”

Section: Introductionmentioning

confidence: 99%

Starch-Based Composite Films with Enhanced Hydrophobicity, Thermal Stability, and UV-Shielding Efficacy Induced by Lignin Nanoparticles

Bian

Zhang

et al. 2022

Biomacromolecules

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Thehighly efficient utilization of lignin is of great importance for the development of the biorefinery industry. Herein, a novel “core–shell” lignin nanoparticle (LNP) with a diameter of around 135 nm was prepared, after the lignin was isolated from the effluent of formic acid fractionation via dialysis. In an attempt to endow composite materials with vital functionalities, the LNP was added to the starch film and the starch/polyvinyl alcohol (PVA) or starch/polyethylene oxide (PEO) composite film. The results showed that the hydrophobicity performance of the synthesized films was enhanced significantly. Specifically, the dynamic water contact angle value of the starch/PVA composite film with 1% (wt) addition of LNPs could be maintained as high as 122° for 180 s; the starch/PEO composite film also achieved an excellent water contact angle above 120°. The addition of LNPs promoted the formation of some rough structures on the film surface, as shown by the scanning electron microscopy images, which could repel the water molecules efficiently and are closely related to the enhanced hydrophobicity of the starch film. What is more, the as-prepared LNP conferred strengthened thermal stability and ultraviolet blocking properties on the starch composite film. The structural combination of the polymer film with LNPs holds the promise for providing advanced functionalities to the composite material with wide applications.

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MXene/wood-derived hierarchical cellulose scaffold composite with superior electromagnetic shielding

Cited by 62 publications

References 65 publications

Wood-Derived Porous Carbon/Iron Oxide Nanoparticle Composites for Enhanced Electromagnetic Interference Shielding

Wood-Derived Porous Carbon/Iron Oxide Nanoparticle Composites for Enhanced Electromagnetic Interference Shielding

Two‐dimensional MXenes: New frontier of wearable and flexible electronics

Starch-Based Composite Films with Enhanced Hydrophobicity, Thermal Stability, and UV-Shielding Efficacy Induced by Lignin Nanoparticles

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