open access publication

Article, 2024

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

Small, ISSN 1613-6829, 1613-6810, Volume 20, 27, Page e2401131, 10.1002/smll.202401131

Contributors

Mandal, Indrajeet [1] Gangareddy, Jagannath 0000-0002-0594-4129 [1] Sethurajaperumal, Abimannan 0000-0003-0828-9235 [2] Nk, Murugasenapathi [3] [4] Majji, Manikanta [5] Bera, Susmita [6] Rudra, Pratyasha 0009-0000-3159-9069 [1] [4] Ravichandran, Vanmathi [2] Bysakh, Sandip 0000-0003-2651-2015 [1] Jacob, Noah [5] Rao, K D M [7] Singh, Rajiv Kumar 0000-0003-2602-9293 [4] [8] Krishnan, N M Anoop [9] Chirumamilla, Manohar 0000-0002-6812-286X (Corresponding author) [10] [11] Palanisamy, Tamilarasan 0000-0001-9957-8440 (Corresponding author) [3] [4] Motapothula, Mallikarjuna Rao 0000-0001-8039-9602 (Corresponding author) [5] Varrla, Eswaraiah 0000-0003-0246-0695 (Corresponding author) [2] Ghosh, Srabanti (Corresponding author) [1] [4] Allu, Amarnath Reddy 0000-0003-0450-0929 (Corresponding author) [1] [4]

Affiliations

  1. [1] Central Glass and Ceramic Research Institute
    2. [NORA names: India; Asia, South];
  2. [2] SRM Institute of Science and Technology
    3. [NORA names: India; Asia, South];
  3. [3] Central Electrochemical Research Institute
    4. [NORA names: India; Asia, South];
  4. [4] Academy of Scientific and Innovative Research
    5. [NORA names: India; Asia, South];
  5. [5] Department of Physics, SRM University AP, Amaravati, Andhra Pradesh, 522502, India.
    6. [NORA names: India; Asia, South];

Abstract

Flat panel reactors, coated with photocatalytic materials, offer a sustainable approach for the commercial production of hydrogen (H2) 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 (Au0, 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.

Keywords

H-glass, HGNI, STH conversion efficiency, agents, ambient atmosphere, applications, atmosphere, carbon, carbon footprint, chemical, chemical conversion, chemical conversion reactions, commercial products, conversion, conversion efficiency, conversion reaction, development, development of high-performance photocatalysts, dewetting method, diffusion, dissociation, efficiency, electron, elements, evolution, flat panel reactors, footprint, glass, glass sheets, glass structure, glass support, gold nano-islands, high solar-to-hydrogen, high-performance photocatalysts, hot electrons, hydrogen, hydrogen (H<sub>2</sub>, hydrogen evolution, in-house, interface, lifetime, light, low utilization efficiency, materials, method, multiple interfaces, nano-islands, oxidation, oxidation state, oxide glasses, photocatalyst, photocatalytic materials, production of hydrogen (H<sub>2</sub>, reaction, reactor, sacrificial agent, sheet, sodium, solar light, solar-to-hydrogen, solar-to-hydrogen efficiency, state, structure, study, support, thermal dewetting method, utilization efficiency of solar light, water, water dissociation

Funders

  • Department of Science and Technology
  • Science and Engineering Research Board
  • Novo Nordisk Foundation
  • Council of Scientific and Industrial Research

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