Metal Sulfides for Photocatalytic Hydrogen Production: Current Development and Future Challenges

Photocatalytic hydrogen production using semiconductor photocatalysts provides a promising strategy for solving the energy crisis. Metal sulfide photocatalysts have received extensive attention due to its visible‐light response, adjustable band structures, and relatively mild preparation conditions. In this review, the emerging strategies to improve photocatalytic performance and stability of metal sulfides are summarized, including engineering of heterojunction, defect engineering, loading single‐atom cocatalyst, photothermal effect, loading dual cocatalysts, and coating stable shell. Special attention is paid to the influence mechanism of latest strategies on the photocatalytic process, with a focus on charge transfer, separation, and participation in surface chemical reaction behavior. Finally, with the goal of promoting the rapid progress of metal sulfides for solar hydrogen production, the key challenges of the latest research frontiers and the prospects on future development of metal sulfides are discussed.