Controllable synthesis of porous MxS@C composites (M = fe, Cu, Mn) with highly efficient electromagnetic absorption properties

IF 2.5 4区材料科学 Q2 CHEMISTRY, APPLIED

Journal of Porous Materials Pub Date : 2024-06-03 DOI:10.1007/s10934-024-01601-z

Wenhui Zhang, Xinbo Wu, Dazhi Wang, Weijie Cai

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引用次数: 0

Abstract

As the frequency range of electronic devices gradually expands, exploring frequency insensitive electromagnetic wave adsorption (EWA) materials that can achieve effective absorption in all bands has aroused great interest. A series of Fe_1 − xS@C composite materials with three-dimensional conductive networks were successfully prepared in this work. In the preparation process, poly (aryl ether sulfone) with branched carboxylic (PAES-C) was selected as the skeleton and Fe³⁺ ions were introduced via chemical adsorption. The main purpose of this work was to develop array porous composite materials with good EWA property. The work proposed a novel controllable method for preparing metal sulfides to explore the electromagnetic wave absorption. This routine was also developed to prepare other M_xS@C composites (M = Fe, Cu, Mn). Compared to Mn_xS@C and Cu_xS@C composites, the RL_min value of Fe_1 − xS@C-4 was − 40.6 dB at 13.52 GHz, and at a thickness of 1.5 mm the effective bandwidth reached 3.12 GHz. Furthermore, its effective absorption band covered Ku, X, and C radar bands at different thicknesses.

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可控合成具有高效电磁吸收特性的多孔 MxS@C 复合材料（M = fe、Cu、Mn

随着电子设备频率范围的逐渐扩大，探索能在所有频段实现有效吸收的频率不敏感电磁波吸附（EWA）材料引起了人们的极大兴趣。本研究成功制备了一系列具有三维导电网络的 Fe1 - xS@C 复合材料。在制备过程中，选择了具有支链羧基的聚（芳基醚砜）（PAES-C）作为骨架，并通过化学吸附引入了 Fe3+ 离子。这项工作的主要目的是开发具有良好 EWA 性能的阵列多孔复合材料。该研究提出了一种新颖的可控方法来制备金属硫化物，以探索电磁波的吸收。该方法还可用于制备其他 MxS@C 复合材料（M = Fe、Cu、Mn）。与 MnxS@C 和 CuxS@C 复合材料相比，Fe1 - xS@C-4 在 13.52 GHz 时的 RLmin 值为 - 40.6 dB，厚度为 1.5 mm 时的有效带宽达到 3.12 GHz。此外，在不同厚度的情况下，其有效吸收波段覆盖了 Ku、X 和 C 雷达波段。

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来源期刊

Journal of Porous Materials 工程技术-材料科学：综合

CiteScore

4.80

自引率

7.70%

发文量

203

审稿时长

2.6 months

期刊介绍： The Journal of Porous Materials is an interdisciplinary and international periodical devoted to all types of porous materials. Its aim is the rapid publication of high quality, peer-reviewed papers focused on the synthesis, processing, characterization and property evaluation of all porous materials. The objective is to establish a unique journal that will serve as a principal means of communication for the growing interdisciplinary field of porous materials. Porous materials include microporous materials with 50 nm pores. Examples of microporous materials are natural and synthetic molecular sieves, cationic and anionic clays, pillared clays, tobermorites, pillared Zr and Ti phosphates, spherosilicates, carbons, porous polymers, xerogels, etc. Mesoporous materials include synthetic molecular sieves, xerogels, aerogels, glasses, glass ceramics, porous polymers, etc.; while macroporous materials include ceramics, glass ceramics, porous polymers, aerogels, cement, etc. The porous materials can be crystalline, semicrystalline or noncrystalline, or combinations thereof. They can also be either organic, inorganic, or their composites. The overall objective of the journal is the establishment of one main forum covering the basic and applied aspects of all porous materials.