Construction of heterojunction MXene/RGO/CoFe-LDH for electromagnetic wave absorption

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Research Bulletin Pub Date : 2024-10-01 DOI:10.1016/j.materresbull.2024.113121

Guoxin Ding , Chenfeng Sun , Meiyi Wang , Yuexiang Hu , Guojun Cheng , Jun Liu

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Abstract

The 2D nanomaterial has been widely used in the field of electromagnetic wave absorption because of its high specific surface area and special electrical properties. In this work, three 2D materials were integrated to form a unique ternary composite with Ti₃C₂T_x MXene as the substrate, RGO as the intercalator with additional components, and CoFe-LDH loaded on the MXene/RGO surface. The interfacial and dipole polarizations were notably enhanced due to the abundant formation of heterogeneous interfaces between the three 2D materials and their corresponding abundant functional groups and defects, and the space between the 2D lamellae enabled multiple reflections of electromagnetic waves. Compared with pure MXene, the MXene/RGO/CoFe-LDH composites exhibited excellent electromagnetic wave absorption performance due to the synergy of multiple loss mechanisms, resulting in the best reflection loss value of −58.9 dB at 13.12 GHz.

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构建用于吸收电磁波的异质结 MXene/RGO/CoFe-LDH

二维纳米材料因其高比表面积和特殊的电学特性而被广泛应用于电磁波吸收领域。在这项工作中，以 Ti3C2Tx MXene 为基底，RGO 为插层剂并添加其他成分，CoFe-LDH 负载在 MXene/RGO 表面，三种二维材料被整合成一种独特的三元复合材料。由于三种二维材料之间形成了丰富的异质界面以及相应的丰富官能团和缺陷，界面极化和偶极极化显著增强，二维薄片之间的空间使电磁波能够多次反射。与纯 MXene 相比，由于多种损耗机制的协同作用，MXene/RGO/CoFe-LDH 复合材料表现出优异的电磁波吸收性能，在 13.12 GHz 频率下的最佳反射损耗值为 -58.9 dB。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.