Abstract
Herein, ZnS/g-C3N4 heterojunction structures were prepared by a rapid microwave method with a proper number density of defects such that they become efficient photocatalysts for hydrogen evolution reaction. The ZnS/g-C3N4 nanocomposites present a maximum hydrogen production rate of 65.43 μmol h−1 under visible light irradiation, which is ~7 times larger than that of g-C3N4. This good catalyst performance originates from the high efficiency of photoproduced charge separation due to the intimate interfacial contact of ZnS and g-C3N4 in the ZnS/g-C3N4 heterojunctions, as well as the presence of Zn vacancies on the ZnS surface. This work offers a simple strategy for building highly efficient photocatalytic materials for H2 evolution in water splitting.
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