Defect-modulated oxygen adsorption and Z-scheme charge transfer for highly selective H₂O₂ photosynthesis in pure water.

ABSTRACT: Solar-driven H₂O₂ production provides an eco-friendly and scalable alternative to conventional anthraquinone processes. However, its efficiency has been limited by the inefficient charge separation and poor selectivity for the two-electron oxygen reduction reaction (2e^- ORR). Here we report a Z-scheme heterojunction photocatalyst constructed by in-situ growth of sulfur-deficient ZnIn₂S₄ nanosheets onto UiO-66-NH₂ (a zirconium-based metal-organic framework). This heterojunction promotes efficient charge separation while retaining strong redox capability, and sulfur vacancies regulate O₂ adsorption into a configuration that suppresses O-O bond cleavage and favors 2e^- ORR. As a result, the composite achiev

SUBMITTER: Gao Z 

PROVIDER: S-EPMC12504443 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature