A graphene dispersed CdS-MoS2 nanocrystal ensemble for cooperative photocatalytic hydrogen production from water.

We report a simple but highly cooperative ensemble with CdS and MoS2 nanocrystals dispersed on graphene sheets: it is demonstrated that CdS nanocrystals can capture light energy and facilitate excited electron transfer to MoS2 for catalytic hydrogen production via the 2-D graphene which plays a key role as an efficient electron mediator.