Abstract
Nowadays, using cheap and renewable sunlight, water and oxygen to produce H2O2 has attracted extensive attention in solar energy transformation. The key lies in developing efficient photocatalytic materials. Carbon-based photocatalytic materials have aroused much interest owing to their abundant raw-material sources, tunable structures, favorable environmental compatibility, and adjustable optoelectronic properties. This review focuses on structural design and modification strategies for improving the H2O2 production performance of carbon-based photocatalytic materials. The recent progress in three typical carbon-based photocatalytic material systems, namely hydrothermal carbonization carbon (HTCC), carbon quantum dots (CQDs), and graphitic carbon nitride (g-C3N4), are described in detail from the perspectives of structure, surface and multicomponent modification. Finally, the challenges associated with structural controllability, active-site identification, stability, and practical applications are summarized, and future development strategies for carbon-based photocatalytic materials are proposed.