Strategies for Efficient Solar Water Splitting Using Carbon Nitride

Graphitic carbon nitride (g-C₃N₄)-based photocatalysts are promising for photocatalytic water splitting to produce clean solar fuels due to their low cost, suitable band structure and excellent photocatalytic performance. This review focuses on the state-of-the-art progress of the strategies for modifying g-C₃N₄-based photocatalysts toward efficient photocatalytic water splitting. In particular, we highlight the importance of interfacial engineering and nanostructural control to facilitating charge separation and migration. Other strategies including doping and defect engineering are also concisely discussed. Finally, the perspectives on the challenges and future development of g-C₃N₄-based photocatalysts are presented.