Synergistic effect of bimetallic RuCo loaded N-defective g-C3N4 nanosheets with cleavage of metal-hydrogen bonds for H2 production in a continuous flow photoreactor

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Abstract

Photocatalytic hydrogen production using an efficient semiconductor is highly demanding to achieve sustainable development goals. Instead of using complex semiconductor materials, the photocatalysis process efficiency can be enhanced using a bimetallic system with a low-cost semiconductor. In this work, well-designed exfoliated N-defective g-C3N4 (N–C3N4) with the synergistic effects of Ru/Co bimetallic system to improve solar-driven H2 evolution in a continuous photoreactor, has been investigated. Using an exfoliated N–C3N4, an H2 yield of 1.26 folds more was produced than a bulk g-C3N4. Bimetallic Ru–Co/N–C3N4 composite exhibited 4450 μmol g−1 h−1 of H2 evolution rate, which is 2.82, 6.09 and 33.58 folds more than using Ru/N–C3N4, Co/N–C3N4 and N–C3N4 samples, respectively. The synergistic impact of Ru/Co, which enables the efficient separation and transfer of charge carriers under visible light in a continuous flow photoreactor system, is responsible for this noticeably enhanced H2 production. The presence of Ru was able to provide metal-hydrogen bonds, whereas, Co was beneficial to maximize the stability of the composite. This novel strategy has promise for several solar energy applications and offers a viable option to build highly effective composites for renewable energy applications.

Original languageEnglish
Pages (from-to)402-416
Number of pages15
JournalInternational Journal of Hydrogen Energy
Volume95
DOIs
Publication statusPublished - Dec 18 2024

Keywords

  • Bimetallic Ru/co loading
  • Defect engineering
  • Exfoliated N–CN
  • Hydrogen production
  • Photocatalytic water splitting
  • Synergistic effect

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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