Haldar, Riya and Allu, Amarnath R. and Varrla, Eswaraiah and Motapothula, Mallikarjuna Rao and Jacob, Noah and Gadudhula , Ganesh and Chatterjee, Kaustuv and Mandal, Indrajeet and Chakraborty, Anustup and Haldar, Keya and Pal, Prabir and Kishore Gupta, Goutam and Krishnan, N. M. Anoop and Chirumamilla, Manohar (2025) Immobilized Gold Nanoparticles on a Glass-Based Scaffold for Direct Solar-Driven H2 from Water Vapor. ACS Materials Letters, 7 (3). pp. 1228-1234. ISSN 2639-4979

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Abstract

Solar-driven green hydrogen (H2) production through photocatalytic water splitting is a promising solution to combat climate change. A key challenge lies in developing photocatalyst materials capable of efficiently splitting water vapor under practical conditions. In this study, we present a photocatalytic system based on gold nanoparticles immobilized on a glass-based porous scaffold through reactive metal support interactions. This structure exhibits a high solar-to-hydrogen (STH) conversion efficiency of 2.2% under simulated solar light. Long-term cycling tests demonstrate stable H2 evolution, with observed declines in efficiency caused by surface hydroxyl and carboxyl group formation, although it is effectively restored through plasma treatment. These findings provide valuable insights into the design of robust and efficient photocatalytic materials, advancing the potential path for scalable commercial applications.

Item Type:	Article
Uncontrolled Keywords:	green hydrogen, photocatalytic, water splitting,gold nanoparticles
Subjects:	Environment and Pollution Engineering Materials
Divisions:	Fuel Cell and Battery
Depositing User:	Ms Upasana Sahu
Date Deposited:	01 Sep 2025 11:27
Last Modified:	01 Sep 2025 11:27
URI:	http://cgcri.csircentral.net/id/eprint/5742

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