Single-Atom Catalysts on C₃N₄: Minimizing Single Atom Pt Loading for Maximized Photocatalytic Hydrogen Production Efficiency.

ABSTRACT: The use of metal single atoms (SAs) as co-catalysts on semiconductors has emerged as a promising technology to enhance their photocatalytic hydrogen production performance. In this study, we describe the deposition of very low amounts of Pt SAs (<0.1 at %) on exfoliated graphitic carbon nitride (C₃N₄) by a direct Pt-deposition approach from highly dilute chloroplatinic acid precursors. We find that - using this technique-a remarkably low loading of highly dispersed Pt SAs (0.03 wt %) on C₃N₄ is sufficient to achieve a drastic decrease in the overall charge transfer resistance and a maximized photocatalytic efficiency. The resulting low-loaded Pt SAs/C₃N₄ provides a H₂ production rate of 1.66 m mol/h/mg Pt, with a

SUBMITTER: Lazaar N 

PROVIDER: S-EPMC11795736 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature