Facile Combustion Synthesis of ZnO/CdMoO 4 Type‐II Heterojunction: A Mechanistic Approach to Enhance Solar‐Driven H 2 O 2 Generation

This study demonstrates a one‐pot combustion synthesis of a type‐II ZnO/CdMoO 4 heterojunction for highly efficient solar‐driven hydrogen peroxide (H 2 O 2 ) production. The optimized heterojunction exhibited a remarkable H 2 O 2 generation rate of 332.86 μmol g −1 h −1 under simulated sunlight in the presence of methanol as a sacrificial agent, which is 3.2 times higher than that of pure ZnO. A series of characterization techniques (including XRD, SEM, TEM, XPS, UV‐DRS) confirmed the successful formation of a close heterointerface with favorable staggered band alignment, which facilitates efficient charge separation and transfer. Mechanistic investigations revealed that the type‐II heterojunction not only enhances the spatial separation of photogenerated electron–hole pairs but also promotes the two‐electron oxygen reduction reaction for H 2 O 2 production. This work offers a facile and scalable strategy for designing high‐performance photocatalysts toward sustainable chemical synthesis.