Abstract
Severe recombination of photogenerated carriers is one of bottlenecks for photocatalytic hydrogen production. Cocatalyst loading has undoubtedly been becoming one of effective methods to solve above-mentioned problem. In this work, two effective cocatalysts, hollow carbon spheres (HCSs) and MoS2, were successfully loaded on ZnIn2S4 nanosheets to form ternary MoS2/HCSs/ZnIn2S4 nanocomposites. Moreover, a strong interaction between HCSs, MoS2 and ZnIn2S4 was confirmed by a series of advanced tools. The ternary nanocomposites exhibited superior photocatalytic hydrogen evolution activity. The highest hydrogen evolution rate of 620.9 μmol g−1 h−1 was achieved, approximately 5.4 times higher than that of pure ZnIn2S4. Such improvement could be attributed to more visible-light absorption, faster carrier transfer and lower electron/hole recombination. This work may provide a favorable envisage for the application of co-catalysts in the field of hydrogen production.
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