Double-layered chitosan aerogel/MXene film composites with asymmetric structure for absorption-dominated electromagnetic interference shielding and solar-driven interfacial evaporation

IF 23.2 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Composites and Hybrid Materials Pub Date : 2024-12-13 DOI:10.1007/s42114-024-01144-6

Meng Zhou, Shuo Zhang, Xinya Zhang

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引用次数: 0

Abstract

Aerogel/film composites with asymmetric structures have outstanding potential for multifunctional applications of absorption-dominated electromagnetic interference (EMI) shielding and solar-driven interfacial evaporation. In this work, the double-layered aerogel/film composites are fabricated by stacking magnetic multi-walled carbon nanotubes/chitosan (mMWCNTs/CS) aerogel and MXene/carboxylated styrene-butadiene rubber (MXene/XSBR) film together under the electrostatic interaction and hydrogen bonds. Profiting from the integration of porous mMWCNTs/CS aerogel as an adsorption layer and dense MXene/XSBR film as a reflection layer, the resulting aerogel/film composites achieve a high absorption coefficient (A) of 0.76 and an optimum EMI shielding effectiveness (SE) of 86.32 dB via the absorption-reflection-reabsorption process. Furthermore, the resulting aerogel/film composites possessing high sunlight adsorption capability (>96.2%) exhibit an excellent solar-driven evaporation rate of up to 2.44 kg∙m^-2∙h^-1 with a notable photothermal conversation efficiency of 92.2% under 1 sun irradiation. The mMWCNTs/CS-MXene/XSBR aerogel/film composites with asymmetric structures not only provide an efficient strategy for developing absorption-dominated EMI shielding materials but also extend a novel path for the practical application of solar evaporation systems.

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具有非对称结构的气凝胶/薄膜复合材料在以吸收为主的电磁干扰（EMI）屏蔽和太阳能驱动的界面蒸发等多功能应用方面具有突出的潜力。在这项工作中，磁性多壁碳纳米管/壳聚糖（mMWCNTs/CS）气凝胶和MXene/羧基丁苯橡胶（MXene/XSBR）薄膜在静电作用和氢键作用下堆叠在一起，制成了双层气凝胶/薄膜复合材料。多孔的 mMWCNTs/CS 气凝胶作为吸附层，致密的 MXene/XSBR 薄膜作为反射层，通过吸收-反射-吸收过程，气凝胶/薄膜复合材料获得了 0.76 的高吸收系数 (A) 和 86.32 dB 的最佳 EMI 屏蔽效果 (SE)。此外，所得到的气凝胶/薄膜复合材料具有很高的太阳光吸附能力（96.2%），在太阳光照射下的太阳驱动蒸发率高达 2.44 kg∙m-2∙h-1，光热转换效率高达 92.2%。具有非对称结构的 mMWCNTs/CS-MXene/XSBR 气凝胶/薄膜复合材料不仅为开发以吸收为主的电磁干扰屏蔽材料提供了一种有效的策略，而且为太阳能蒸发系统的实际应用拓展了一条新的途径。

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.