Efficient and stable n-type sulfide overall water splitting with separated hydrogen production.

ABSTRACT: N-type sulfide semiconductors are promising photocatalysts due to their broad visible-light absorption, facile synthesis and chemical diversity. However, photocorrosion and limited electron transport in one-step excitation and solid-state Z-scheme systems hinder efficient overall water splitting. Liquid-phase Z-schemes offer a viable alternative, but sluggish mediator kinetics and interfacial side reactions impede their construction. Here we report a stable Z-scheme system integrating n-type CdS and BiVO₄ with a [Fe(CN)₆]³⁻/[Fe(CN)₆]⁴⁻ mediator, achieving 10.2% apparent quantum yield at 450 nm with stoichiometric H₂/O₂ evolution. High activity reflects synergies between Pt@CrO_x and Co₃O₄ cocatalysts on CdS, and cobalt-directed facet asymmetry in BiVO₄, resu

SUBMITTER: Luo H 

PROVIDER: S-EPMC12491605 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature