Photocatalytic hydrogen production using twinned nanocrystals and an unanchored NiSx co-catalyst

More efficient, noble metal-free catalysts are sought to generate hydrogen from aqueous solutions using light. Liu et al. achieve high quantum efficiencies using a system where the co-catalyst is proposed to consist of small NiSx particles that are not anchored to the Cd0.5Zn0.5S photocatalyst.