ZnS−NiS₂/g-C₃N₄ ternary composites were synthesized via a thermal polymerization and post co-deposition−sulfidation method. The decoration of g-C₃N₄ layers with ZnS−NiS₂ nanoparticles extended visible light absorption and promoted the separation and transfer of photo-generated charge carriers. The photocatalytic performance of the ZnS−NiS₂/g-C₃N₄ composites was evaluated by the visible-light-driven hydrogen evolution. Briefly, compared to g-C₃N₄, ZnS/g-C₃N₄, and NiS₂/g-C₃N₄, the hydrogen evolution rate on ZnS−NiS₂/CN(0.4) was separately increased by 31, 31, and 1 times, highlighting the synergistic effect of ZnS and NiS₂. The interface between ZnS and g-C₃N₄ modified the charge separation and transfer process. Meanwhile, NiS₂ with a Pt-like behavior acted as an electron acceptor to facilitate transfer photoelectrons and to provide active sites for proton reduction. This work will offer new insight into improving g-C₃N₄-based photocatalysts with mixed metal sulfides for efficient hydrogen evolution.

ZnS-NiS ₂ /gC ₃ N ₄三元复合材料通过热聚合和后共沉积-硫化法合成。_{ZnS-NiS 2纳米粒子对gC 3} N ₄层的装饰扩展了可见光的吸收并促进了光生电荷载流子的分离和转移。ZnS-NiS ₂ /gC ₃ N ₄复合材料的光催化性能通过可见光驱动的析氢来评估。简而言之，与 gC ₃ N ₄、ZnS/gC ₃ N ₄和 NiS ₂ /gC相比₃ N _{4 ，ZnS-NiS 2} /CN(0.4)的析氢速率分别提高了31、31和1倍，突出了ZnS和NiS ₂的协同作用。ZnS 和 gC ₃ N ₄之间的界面改变了电荷分离和转移过程。同时，具有类Pt行为的NiS _{2充当电子受体以促进光电子的转移并为质子还原提供活性位点。这项工作将为改进具有混合金属硫化物的 gC 3} N ₄基光催化剂以实现高效析氢提供新的见解。