In situ photodeposition of NiOX on CdS for hydrogen production under visible light: Enhanced activity by controlling solution environment

- Low-cost nickels as cocatalysts are loaded on CdS via in situ photodeposition.
- The solution environment plays an important role in H2 production activity.
- The H2 evolution rate is 590.8 μmol h−1 (118 times of pure CdS) in alkaline solution.
- NiO dispersed tightly on CdS in alkaline solution can accelerate electrons transfer.