journal article·2024-07Open access

H‐Glass Supported Hybrid Gold Nano‐Islands for Visible‐Light‐Driven Hydrogen Evolution

Indrajeet Mandal, Jagannath Gangareddy, Abimannan Sethurajaperumal, Murugasenapathi NK, Manikanta Majji, Susmita Bera, Pratyasha Rudra, Vanmathi Ravichandran, Sandip Bysakh, Noah Jacob, K. D. M. Rao, Rajiv K. Singh, N. M. Anoop Krishnan, Manohar Chirumamilla, Tamilarasan Palanisamy, M. Motapothula, Eswaraiah Varrla, Srabanti Ghosh, Amarnath R. Allu

Small· Volume 20· Issue 27

Abstract

Abstract Flat panel reactors, coated with photocatalytic materials, offer a sustainable approach for the commercial production of hydrogen (H 2 ) with zero carbon footprint. Despite this, achieving high solar‐to‐hydrogen (STH) conversion efficiency with these reactors is still a significant challenge due to the low utilization efficiency of solar light and rapid charge recombination. Herein, hybrid gold nano‐islands (HGNIs) are developed on transparent glass support to improve the STH efficiency. Plasmonic HGNIs are grown on an in‐house developed active glass sheet composed of sodium aluminum phosphosilicate oxide glass (H‐glass) using the thermal dewetting method at 550 °C under an ambient atmosphere. HGNIs with various oxidation states (Au 0 , Au + , and Au − ) and multiple interfaces are obtained due to the diffusion of the elements from the glass structure, which also facilitates the lifetime of the hot electron to be ≈2.94 ps. H‐glass‐supported HGNIs demonstrate significant STH conversion efficiency of 0.6%, without any sacrificial agents, via water dissociation. This study unveils the specific role of H‐glass‐supported HGNIs in facilitating light‐driven chemical conversions, offering new avenues for the development of high‐performance photocatalysts in various chemical conversion reactions for large‐scale commercial applications.
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Research context

OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Nanocluster Synthesis and Applications · Quantum Dots Synthesis And Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

CSIR‐Central Glass and Ceramic Research Institute 196 Raja S C Mullick Road Kolkata 700 032 India

Sustainable Nanomaterials and Technologies Lab Department of Physics and Nanotechnology SRM Institute of Science and Technology Kattankulathur Chengalpattu Tamil Nadu 603203 India

Electrodics and Electrocatalysis Division (EEC) CSIR‐Central Electrochemical Research Institute (CECRI) Karaikudi Tamil Nadu 630003 India

Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India

Department of Physics SRM University AP Amaravati Andhra Pradesh 522502 India

Research Institute for Sustainable Energy (RISE) TCG Centres for Research and Education in Science and Technology (TCG CREST) Sector V, Salt Lake Kolkata 700091 India

School of Applied & Interdisciplinary Sciences Indian Association for the Cultivation of Science 2A & 2B Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India

Photovoltaic Metrology Section Advanced Material and Devices Metrology Division CSIR‐National Physical Laboratory New Delhi 110012 India

Department of Civil Engineering Indian Institute of Technology Delhi New Delhi 110016 India

Department of Materials and Production Aalborg University Skjernvej 4A Aalborg 9220 Denmark

Institute of Optical and Electronic Materials Hamburg University of Technology Eissendorfer Strasse 38 21073 Hamburg Germany

Funding

Science and Engineering Research Board · Department of Science and Technology, Government of Rajasthan · Novo Nordisk Fonden

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