Graphitic carbon nitride heterojunction photocatalysts for solar hydrogen production

Photocatalytic hydrogen production is considered as an ideal approach to solve global energy crisis and environmental pollution. Graphitic carbon nitride (g-C3N4) has received extensive consideration due its facile synthesis, stable physicochemical properties, easy functionalization. However, the pristine g-C3N4 usually shows unsatisfactory photocatalytic activity limited separation efficiency of photogenerated charge carriers. Generally, introducing semiconductors or co-catalysts construct g–C3N4–based heterojunction photocatalysts recognized effective method this bottleneck. In review, advantages characteristics various types are analyzed. Subsequently, recent progress highly efficient in field water splitting emphatically introduced. Finally, a vision future perspectives challenges presented. Predictably, timely review will provide valuable reference for design heterojunctions towards other photoredox reactions.