Novel Method of MoS2 Decorated CdS Core-shell Nano-Heterojunctions for Highly Efficient and Stable Hydrogen Generation

Exploitation of efficient and stable photocatalyst for water splitting is pressing to solve the energy crisis. Four CdS@MoS2 nano-heterojunctions were prepared by a single precursor thermal decomposition combined with one-step hydrothermal method. The morphology of the prepared samples is spherical and has obvious core-shell structure interface. The photocurrent of CdS@MoS2-2 wt% is the largest, which is more over 40 times that of the pure CdS. In addition, CdS@MoS2-2 wt% had superior photocatalytic H-2 generation activity (20.23 mmol g(-1) h(-1)) without any noble metal as a cocatalyst under visible light and show marked photocatalytic durability after a continuous test for 16 hours. This work provides a new insight for the design of core-shell nano-heterojunctions for other metal sulfide composites.