Collaboratively Hydrothermal and Calcination Fabrication of ZnOS Heterostructures for Visible-Light-Driven H2 Production

Abstract

Abstract Photocatalytic overall water splitting is forecasted as a promising strategy for H2 production. Herein, novel zinc oxide/zinc sulfide (ZnOS-x) (x = 1, 2, 3) heterostructures were fabricated via a collaboratively hydrothermal and calcination method with different trithiocyanuric acid amounts. The formation of ZnOS-x heterostructures were confirmed by the uses of PXRD, XPS, and HRTEM. Moreover, ZnOS-3 nanoparticles exhibit homogeneous and smooth surface morphology structure. ZnOS-3 displayed efficient charge separation and transfer efficiency under the photoinduce. ZnOS-3 shows the highest average H2 evolution reaction rate (788.7154 µmol g− 1 h− 1) under visible-light irradiation, which increases along with highering of the ratio of trithiocyanuric acid in the ZnOS-x series. This work provides a new insight to prepare the uniformly integrated heterostructures of metal oxides/sulfides for visible-light H2 generation.