Defect MoS2 and Ti3C2 nanosheets co-assisted CdS to enhance visible-light driven photocatalytic hydrogen production

The addition of a co-catalyst is one of the most effective ways to enhance the performance of CdS photocatalytic hydrogen production. In this work, ternary photocatalysts with Defect MoS2 and Ti3C2 acting synergistically on CdS are explored. The experimental results showed that the Defect MoS2/Ti3C2/CdS photocatalyst had excellent photocatalytic hydrogen production performance of 14.1 mmol h−1g−1, which was 18.5, 12.4, and 1.2 times higher than that of CdS, Ti3C2/CdS and Defect MoS2/CdS, respectively. Defect MoS2 and Ti3C2 synergistically interact with CdS and form heterojunctions, which improve the carrier separation efficiency and effectively suppress the recombination of photogenerated carriers. A possible photocatalytic hydrogen production mechanism of Defect MoS2/Ti3C2/CdS is also proposed. The dual co-catalysts of Defect MoS2 and Ti3C2 demonstrated in this paper provide a feasible approach for the development of composite catalysts.