Facile Synthesis of MoS 2 /g-C 3 N 4 /GO Ternary Heterojunction with Enhanced Photocatalytic Activity for Water Splitting

On the basis of a simple ion exchange method, a MoS 2 /g-C 3 N 4 /graphene oxide (GO) ternary nanojunction was constructed as an efficient photocatalyst for hydrogen evolution using solar energy. The confinement effect in MoS 2 and g-C 3 N 4 quantum dots enhances their water-splitting redox activities. The designed heterostructure featured a band alignment that facilitates the collection of electrons in MoS 2 and holes in g-C 3 N 4, effectively suppressing the recombination of photogenerated charge carriers. Furthermore, the GO with high specific surface area serves as an excellent conductive substrate to transport holes speedily. This study thus provides a novel and facile route of establishing efficient composite photocatalyst with multinary components for energy conversion.