Enhanced effect of CdS on amorphous Mo15S19 for photocatalytic hydrogen evolution

Research on cheap co-catalysts to increase hydrogen evolution and improve catalyst stability is an important developmental direction in the field of photocatalytic hydrogen release. In this work, Mo15S19/CdS nanocomposites were synthesized via a facile multistep synthesis method. On account of the larger specific surface area, more active sites and more favorable photogenic carrier separation of the composite photocatalyst, the 5%-Mo15S19/CdS obtained the highest hydrogen production capacity. The rate reached 142.9 mu mol h(-1) (10 mg), which is 8.4 times that of the pristine CdS nanorods. The introduction of Mo15S19 can reduce the surface resistance and improve the transportation of photogenerated electrons on the surface of CdS, resulting in a significant reduction in the recombination rate of the photogenerated electrons, thereby promoting the photocatalytic hydrogen production performance of CdS. This work not only provides an effective co-catalyst to improve the rate of photocatalytic water splitting of CdS, but also provides a reference for the development of novel high efficiency catalysts.