Issue 27, 2025

Plasmonic MXene/Au@Ag core–shell heterostructures: a unified platform for electromagnetic stealth, antimicrobial action, and environmental remediation

Abstract

The integration of electromagnetic wave absorption, antibacterial functionality, and environmental remediation into a single composite material remains a formidable challenge due to conflicting material property requirements. To address this, we fabricate plasmonic MXene/Au@Ag core–shell nanocomposites via in situ reduction, leveraging the synergistic effects of bimetallic architecture and MXene's tunable surface chemistry. The Au@Ag core–shell nanoparticles enhance interfacial polarization and plasmonic resonance, enabling ultra-broadband absorption (7.6 GHz effective absorption bandwidth) with a minimum reflection loss of −42.93 dB at 2.8 mm thickness, alongside a 42.9 dB m2 radar cross-section reduction. Concurrently, the composite exhibits >95% antibacterial efficiency via Ag+ release and light-triggered ROS generation, alongside >90% adsorption capacity for organic pollutants through MXene's functionalized surface. By unifying electromagnetic stealth, antimicrobial action, and environmental remediation, this work establishes a versatile platform for next-generation composites in aerospace, biomedical, and environmental engineering.

Graphical abstract: Plasmonic MXene/Au@Ag core–shell heterostructures: a unified platform for electromagnetic stealth, antimicrobial action, and environmental remediation

Supplementary files

Article information

Article type
Paper
Submitted
02 May 2025
Accepted
12 Jun 2025
First published
12 Jun 2025

Nanoscale, 2025,17, 16398-16410

Plasmonic MXene/Au@Ag core–shell heterostructures: a unified platform for electromagnetic stealth, antimicrobial action, and environmental remediation

H. Wang, X. Yang, T. Zhu, X. Su, L. Xiao, Q. Yu, P. Liu and L. Wang, Nanoscale, 2025, 17, 16398 DOI: 10.1039/D5NR01800E

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