Surface Plasmon Resonance-enhanced photocatalytic water-splitting for improved visible-light-driven H2 generation using Ag-modified twin crystal Cd0.5Zn0.5S photocatalysts

Hamid M. A., Zengin Y., Boz I.

Catalysis Communications, vol.187, 2024 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 187
  • Publication Date: 2024
  • Doi Number: 10.1016/j.catcom.2024.106841
  • Journal Name: Catalysis Communications
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, BIOSIS, Chemical Abstracts Core, Chimica, Compendex, Directory of Open Access Journals
  • Keywords: Ag-doped Cd0.5Zn0.5S, Hydrogen generation performance, Solvothermal synthesis, Surface Plasmon Resonance
  • Istanbul University-Cerrahpasa Affiliated: Yes

Abstract

Photocatalytic hydrogen generation is a viable option among strategies to mitigate the energy crisis. This study investigates visible-light-driven H2 generation using Ag-doped twin crystal CdxZn1-xS photocatalysts synthesized through a solvothermal process. Ag nanoparticles induce Surface Plasmon Resonance (SPR), enhancing photo-response. Twin crystal 1 wt% Ag-doped Cd0.5Zn0.5S photocatalyst exhibits significant H2 evolution at 2458 μmol/gcat.h under visible light. Enhanced performance is attributed to dual-function Ag nanoparticles: SPR-enhanced light absorption, efficient electron transfer to the Cd0.5Zn0.5S conduction band, and the twin crystal structure facilitating electron-hole pair separation. Emphasis on optimal Ag loading and the crucial role of SPR in elevating photocatalyst efficiency.