Regulating d-band electrons of sulfur-enriched CoSx to weaken the S–Hads bond in CoSx/ZnCdS ohmic heterojunctions for enhanced photocatalytic hydrogen evolution

A ZnCdS/CoS x ohmic heterojunction for efficient charge separation was prepared. CoS x via sulfur enrichment and amorphization expose more S active sites, weaken S–Hads bonds, and enhance hydrogen desorption, boosting photocatalytic activity.