Titanium carbide MXenes coupled with cadmium sulfide nanosheets as two-dimensional/two-dimensional heterostructures for photocatalytic hydrogen production.

Two-dimensional (2D)/2D heterostructures with close contact are believed to be important for photocatalysis owing to a 2D ultrathin structure, a large surface area, and an efficient carrier separation or transfer. In this study, we designed and prepared a unique 2D/2D cadmium sulfide (CdS) nanosheet (NS)@titanium carbide (TiC) MXene composite photocatalyst. The results show that the CdS NSs can be controllably assembled on conductive TiC MXene via a one-step hydrothermal strategy.