Advancements in dual S-scheme heterojunction systems for photocatalytic applications: A mini-review

Jinfeng Du, Irshad Ahmad, I. M. Ashraf, Fatma B.M. Ahmed, Ammara Aslam, Ijaz Ali, Akbar Mohammad, Mohammad Ahmad Khasawneh

Research output: Contribution to journalReview articlepeer-review

Abstract

S-scheme heterojunction systems are promising photocatalysts for solar fuel generation and pollutant removal. However, the photoactivity of single S-scheme heterojunction photocatalysts lacks the necessary target, impeding their industrial applications. Constructing dual S-scheme heterojunction systems is critical in improving photoactivity by efficiently inhibiting the recombination rate of photoinduced electron-hole pairs while maintaining strong redox potentials. Until now, a single review has been published on dual S-scheme heterojunction systems. Hence, to better understand the benefits and limitations of dual S-scheme heterojunction systems and their underlying photocatalytic mechanisms, this review discusses the properties of these systems. Further, it compares and contrasts the design and photocatalytic mechanisms of the dual S-scheme heterojunction systems discussed in the literature, and elucidates the unique capability and advantages of the dual S-schemes. Moreover, the role of dual S-scheme heterojunction systems in increasing light absorption, enhancing charge generation and utilization, improving charge kinetics, and boosting stability is also summarized. Finally, the current challenges confronted by these systems, and the future suggestions for improvements are presented.

Original languageEnglish
Pages (from-to)1361-1384
Number of pages24
JournalInternational Journal of Hydrogen Energy
Volume100
DOIs
Publication statusPublished - Jan 27 2025

Keywords

  • CO reduction
  • Dual S-Scheme heterojunction
  • Fuel generation
  • Photocatalyst
  • Pollutant removal

ASJC Scopus subject areas

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

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