In situ fabrication Ti3C2Fx MXene/CdIn2S4 Schottky junction for photocatalytic oxidation of HMF to DFF under visible light

It is highly demanded to steer the charge flow in semiconductors for efficient photocatalytic selective value-added conversion. In this study, we designed an interfacial contact Ti3C2 MXene/CdIn2S4 Schottky heterostructure which could greatly enhance the photogenerated charge separation of CdIn2S4. The study found that MXene/CdIn2S4 Schottky junction and ultra-thin nanostructures greatly promote the efficiency of photogenerated carriers separation and interface transfer. Compared with pure CIS, this heterostructure showed more excellent and stable HMF value-added conversion performance under natural conditions (DFF yield increased by 2.3 times). This work provides a new idea for MNs-based Schottky junction construction and a promising method for the photocatalytic value-added conversion of biomass under natural conditions.