3D porous CoNi@Ti3C2Tx@rGO aerogel exhibiting superior electromagnetic wave absorption performance

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-05-01 DOI:10.1016/j.ceramint.2025.01.479

Shuang Zhang , Na Zhao , Fan Zhang , Rui Zhang , Hailong Wang , Bingbing Fan

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Abstract

A new type of two-dimensional Ti₃C₂T_x MXene material has attracted wide attention due to its unique layered structure, large specific surface area, and metallic properties. However, the microwave absorption (MA) performance is limited due to its high conductivity. To address this, a CoNi@ Ti₃C₂T_x@rGO aerogel composite was prepared by hydrothermal reaction and heat treatment. The MA properties of this composite can be effectively tuned by adjusting the mass ratio of CoNi@ Ti₃C₂T_x to GO. The results show that excellent MA performance is achieved at a low filling ratio (3 wt%). When the mass ratio of CoNi@Ti₃C₂T_x to GO is 1: 1, a minimum reflection loss of −66.36 dB at 7.2 GHz is observed with a thickness of 2.1 mm. Furthermore, by adjusting the thickness, the maximum effective absorption bandwidth can reach 6 GHz (11.5–17.5 GHz) with a thickness of only 1.4 mm. The composite's multiple components optimize impedance matching and enhance interfacial polarization loss, while the aerogel's structure promotes multiple reflections and scattering. This approach offers new insights into designing high-efficiency microwave absorption materials.

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三维多孔CoNi@Ti3C2Tx@rGO气凝胶具有优异的电磁波吸收性能

一种新型二维Ti3C2Tx MXene材料由于其独特的层状结构、大比表面积和金属性能而受到广泛关注。然而，由于其高导电性，微波吸收性能受到限制。为了解决这一问题，通过水热反应和热处理制备了CoNi@ Ti3C2Tx@rGO气凝胶复合材料。通过调整CoNi@ Ti3C2Tx与GO的质量比，可以有效地调节复合材料的MA性能。结果表明，在低填充率（3 wt%）下可获得优异的MA性能。当CoNi@Ti3C2Tx与氧化石墨烯的质量比为1:1时，在7.2 GHz时，厚度为2.1 mm的反射损耗最小，为−66.36 dB。此外，通过调整厚度，在厚度仅为1.4 mm的情况下，最大有效吸收带宽可达到6 GHz （11.5-17.5 GHz）。复合材料的多组分优化了阻抗匹配，提高了界面极化损耗，而气凝胶的结构促进了多次反射和散射。该方法为设计高效微波吸收材料提供了新的思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.