MOFs-derived MoS2/C3N4 composites with highly efficient charge separation for photocatalytic H2 evolution

Photocatalytic hydrogen (H 2 ) production utilizing metal organic frameworks (MOFs) as catalysts is one of the most promising methods for production of H 2 . However, pure MOFs have poor mechanical and chemical stability. Preparing MOF-derived materials with MOFs as templates is an effective method to improve their stability. MOFs were used as precursors to synthesise MoS 2 /CN by a solvothermal method. The results show that under visible-light irradiation, the material exhibits significant photocatalytic H 2 production activity. Modification of CN by MOF-derived MoS 2 increases the light absorption capacity and further improves photogenerated charge separation. The optimal production rate for H 2 evolution was 1695.76 μmol g −1 (4 h). MoS 2 and CN are uniformly dispersed and firmly connected in the catalyst, which is conducive to charge transfer. In addition, the MoS 2 /CN catalyst exhibited better stability for H 2 production. This study provides a reference for the preparation of noble-metal-free sulfide cocatalysts using metal MOFs as self-sacrificing templates.