Developing Ni single-atom sites in carbon nitride for efficient photocatalytic H₂O₂ production.

ABSTRACT: Photocatalytic two-electron oxygen reduction to produce high-value hydrogen peroxide (H₂O₂) is gaining popularity as a promising avenue of research. However, structural evolution mechanisms of catalytically active sites in the entire photosynthetic H₂O₂ system remains unclear and seriously hinders the development of highly-active and stable H₂O₂ photocatalysts. Herein, we report a high-loading Ni single-atom photocatalyst for efficient H₂O₂ synthesis in pure water, achieving an apparent quantum yield of 10.9% at 420 nm and a solar-to-chemical conversion efficiency of 0.82%. Importantly, using in situ synchrotron X-ray absorption spectroscopy and Raman spectroscopy we directly observe that initial Ni-N

SUBMITTER: Zhang X 

PROVIDER: S-EPMC10628073 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature