Allu, Amarnath R. and Haque, Sinorul and Varrla, Eswaraiah and Krishnan, N. M. Anoop and et, al (2025) Reactive Glass-Metal Interaction Under Ambient Conditions Enables Surface Modification of Gold Nano-islands. Advanced Functional Materials. ISSN 1616-3028

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Abstract

Stabilizing gold nanoparticles with tunable surface composition via reactive metal-support interactions under ambient conditions remains a formidable challenge. We establish reactive glass-metal interaction (RGMI) as an effective strategy for engineering gold nano-islands with enhanced stability and tailored surface chemistry. By manipulating sodium aluminophosphosilicate (NAPS) glass composition, we demonstrate that glass chemistry directly modulates interfacial phenomena, enabling gold nanostructure stability at moderate temperatures (550 °C) in ambient conditions. This approach bypasses requirements for chemical precursors, reducing agents, extreme temperatures, and extended reaction times, offering an environmentally sustainable fabrication pathway. Comprehensive characterization reveals that adsorption and intercalation of Na and P at gold nano-island surfaces induces lattice distortions in the Au(111) planes and creates new electronic states near the Fermi level. The resulting gold nano-island-glass interface significantly influences hot carrier dynamics, extending electron lifetimes essential for enhanced catalytic performance. RGMI provides a versatile strategy for engineering stable, multi-element nanostructures with broad applications in heterogeneous catalysis, sensing, and optoelectronics.

Item Type:	Article
Subjects:	Glass
Divisions:	Fuel Cell and Battery
Depositing User:	Ms Upasana Sahu
Date Deposited:	12 May 2026 16:55
Last Modified:	12 May 2026 16:55
URI:	https://cgcri.csircentral.net/id/eprint/5791

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