Immobilized Gold Nanoparticles on a Glass-Based Scaffold for Direct Solar-Driven H<sub>2</sub> from Water Vapor
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.
Authors
- Indrajeet Mandal (ORCID: https://orcid.org/0000-0002-8808-4602)
- Noah Jacob (ORCID: https://orcid.org/0000-0003-1787-177X)
- Manohar Chirumamilla (ORCID: https://orcid.org/0000-0002-6812-286X)
- Kasturi Haldar
- M. Motapothula (ORCID: https://orcid.org/0000-0001-8039-9602)
- Eswaraiah Varrla (ORCID: https://orcid.org/0000-0003-0246-0695)
- Ritesh Haldar (ORCID: https://orcid.org/0000-0001-9697-9169)
- Anustup Chakraborty
- Prabir Pal (ORCID: https://orcid.org/0000-0002-7356-2587)
- N. M. Anoop Krishnan (ORCID: https://orcid.org/0000-0003-1500-4947)
- Goutam Kishore Gupta
- G. Ganesh (ORCID: https://orcid.org/0009-0002-0595-6709)
- Amarnath Reddy Allu (ORCID: https://orcid.org/0000-0003-0450-0929)
- Kaustuv Chatterjee (ORCID: https://orcid.org/0009-0003-4039-9327)
Institutions
- Central Glass and Ceramic Research Institute (IN)
- SRM Institute of Science and Technology (IN)
- Nanomaterials Research (United States) (US)
- SRM University (IN)
- Indian Institute of Technology Delhi (IN)
- Aalborg University (DK)
- Academy of Scientific and Innovative Research (IN)
Publication Details
- Journal
- ACS Materials Letters
- Published
- 2025-03-04
- DOI
- https://doi.org/10.1021/acsmaterialslett.4c02545
- Citations
- 2
- Primary Topic
- Advanced Photocatalysis Techniques
- Type
- article
- Field-Weighted Citation Impact
- 0.73
Funders
- SRM Institute of Science and Technology
- Department of Science and Technology, Ministry of Science and Technology, India
- Council of Scientific and Industrial Research, India
- Centre for High Technology, Ministry of Petroleum and Natural Gas