A facile synthetic route, by using rhombic dodecahedral zeolitic imidazolate framework-8 (ZIF-8) as the structure template, is devoted to fabricating the ZnS/ZnIn₂S₄ hybrid heterojunction; the compact heterostructure was produced by combining the sulfurization of ZIF-8 and the in situ precipitation of ZnIn₂S₄ in one pot. The resulting ZnS nanoparticles of about 100 nm were uniformly dispersed in the folds of flower-like ZnIn₂S₄, whose structure is beneficial for charge transfer at the heterointerface. The additional quantities of ZIF-8 are varied to find an optimum ratio of the two components to obtain the best photocatalytic activity. In the photocatalytic hydrogen generation irradiated by simulated solar light, all the ZnS/ZnIn₂S₄ hybrid photocatalysts displayed improved hydrogen production rates compared to single ZnS or ZnIn₂S₄, and the best hydrogen production rate of 453.4 μmol h⁻¹ g⁻¹ is obtained by ZnS/ZIS-20, whose value is approximately 4 times higher than that of single ZnIn₂S₄. The electrochemical properties of the ZnS/ZnIn₂S₄ hybrid photocatalysts were measured to explore the charge transfer mode at the interface, and the band structure and enhanced photocatalytic hydrogen generation mechanism have been proposed. The excellent recycling properties of hydrogen production indicated the prospective applications of this kind of ZIF-derived metal sulfide in photocatalytic reactions.

中文翻译：

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ZIF衍生的ZnS / ZnIn2S4异质结的简便合成和增强的光催化氢释放。

以菱形十二面体沸石咪唑酸酯骨架8（ZIF-8）为结构模板，是一种简便的合成路线，致力于制造ZnS / ZnIn ₂ S ₄杂化异质结。通过在一个锅中结合ZIF-8的硫化和ZnIn ₂ S _4的原位沉淀来产生致密的异质结构。所得的约100 nm的ZnS纳米颗粒均匀地分散在花状ZnIn ₂ S ₄的褶皱中，其结构有利于异质界面上的电荷转移。改变ZIF-8的额外量以找到两种组分的最佳比例以获得最佳的光催化活性。在光催化氢生成通过照射模拟太阳光，所有的的ZnS /日宁₂小号_4个混合光催化剂相比单一的ZnS或日宁显示改进的氢生产速率₂小号₄，和453.4微摩尔小时最好产氢速率^-1克^-通过ZnS / ZIS-20获得¹，其值是单个ZnIn ₂ S ₄值的约4倍。ZnS / ZnIn ₂的电化学性质测量了S ₄杂化光催化剂的界面电荷转移模式，并提出了能带结构和增强的光催化氢生成机理。制氢的优异循环特性表明这种ZIF衍生的金属硫化物在光催化反应中的潜在应用。