Percolation-Driven Optimization of MWCNT/CoMn2O4/PVA Metacomposites for Electromagnetic Wave Absorption and Interfacial Hydrophobicity in Optoelectronic Applications.

IF 3.9 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2025-10-02 DOI:10.1021/acs.langmuir.5c04041

Reza Gholipur,Haider Al-Luhaibi

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引用次数: 0

Abstract

The escalating demand for multifunctional nanomaterials in electromagnetic interference (EMI) mitigation and optoelectronic applications has highlighted the need for materials with optimized electromagnetic absorption and tailored surface properties. A significant challenge is enhancing electromagnetic wave absorption while controlling interfacial wettability to enable practical deployment in diverse environments. This study addresses these issues by synthesizing MWCNT/CoMn2O4/PVA metacomposites (MCP1-MCP5) with MWCNT weight fractions from 0.011 to 0.166 using in situ polymerization, followed by characterization via FESEM, BET/BJH, and electromagnetic testing (0-100 MHz). Results demonstrate that MCP3 (0.044 MWCNT) achieves the lowest reflection loss (∼-32.908 dB at 10 MHz, 1 mm thickness) 78 and a contact angle of ∼39°, indicating moderate wettability. MCP5 (0.166 MWCNT) exhibits an AC conductivity of 8.8 × 10-3 at 100 MHz, enhancing absorption through improved conductive losses. These findings reveal percolation-driven tunability, positioning these metacomposites as promising candidates for EMI absorption and surface-engineered optoelectronic applications.

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MWCNT/CoMn2O4/PVA复合材料在光电应用中的电磁波吸收和界面疏水性的渗透驱动优化。

在电磁干扰（EMI）缓解和光电子应用中对多功能纳米材料的需求不断增加，突出了对具有优化电磁吸收和定制表面特性的材料的需求。一项重大挑战是在控制界面润湿性的同时增强电磁波吸收，以实现在各种环境中的实际部署。本研究通过原位聚合合成MWCNT质量分数为0.011 ~ 0.166的MWCNT/CoMn2O4/PVA超复合材料（MCP1-MCP5），然后通过FESEM、BET/BJH和电磁测试（0-100 MHz）进行表征，解决了这些问题。结果表明，MCP3 （0.044 MWCNT）具有最低的反射损耗（在10 MHz， 1 mm厚度时为~ -32.908 dB） 78，接触角为~ 39°，具有中等润湿性。MCP5 （0.166 MWCNT）在100 MHz时的交流电导率为8.8 × 10-3，通过改善导电损耗来增强吸收。这些发现揭示了渗透驱动的可调性，将这些超复合材料定位为EMI吸收和表面工程光电应用的有前途的候选者。

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

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).