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。

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

摘要

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。

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

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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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).