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Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles
Published on: March 2, 2016
Plasmonic MXene/Au@Ag core-shell heterostructures: a unified platform for electromagnetic stealth, antimicrobial
Hong Wang1, Xin Yang1, Tong Zhu1
1South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, Guangdong Basic Research Center of Excellence for Energy and Information Polymer Materials, South China University of Technology, Guangzhou 510640, China. lingewang@scut.edu.cn.
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.
