Ultrafast charge separation in a WC@C/CdS heterojunction enables efficient visible-light-driven hydrogen generation

A WC@C/CdS sample achieved an average hydrogen production rate as high as 8.84 mmol g −1 h −1 , which was about 21 and 31 times higher than those of pristine CdS and 7 wt% Pt/CdS. Its apparent quantum yield reached 55.3% at 420 nm.