Ultrathin Ni(OH)2 nanosheets decorated with Zn0.5Cd0.5S nanoparticles as 2D/0D heterojunctions for highly enhanced visible light-driven photocatalytic hydrogen evolution

Designing and fabricating highly efficient photocatalysts for water splitting is a promising strategy to address energy environmental issues. Cadmium sulfide (CdS) has received significant interest as photocatalyst visible-light-induced hydrogen (H2) generation. However, the severe photocorrosion, high overpotential, rapid charge recombination, sluggish surface reaction kinetics drastically hinder its practical application in splitting. Herein, uniform zinc cadmium (Zn0.5Cd0.5S) nanoparticles were anchored on ultrathin Ni(OH)2 nanosheets via facile solution-phase approach form an intimate two-dimensional (2D)/zero-dimensional (0D) heterojunction. Under visible light irradiation, 7%Ni(OH)2/Zn0.5Cd0.5S composite exhibited highest H2 production rate of 6.87 mmol·h?1·g?1 with apparent quantum yield 16.8% at 420 nm, which almost 43 times higher than that pristine Zn0.5Cd0.5S considerably Pt/Zn0.5Cd0.5S photocatalyst. The photoactivity 2D/0D Ni(OH)2/Zn0.5Cd0.5S heterojunction can be ascribed unique robust structure, wherein not only provide excellent platform incorporation but also serve effective cocatalyst promote photoinduced electron transfer offer more active sites photocatalytic This work paves way toward development versatile, low-cost, solar conversion.