Abstract Hydrogen production by photocatalysis under visible light irradiation is a pivotal means of obtaining hydrogen. In this study, Zn0.5Cd0.5S was studied to have optimal hydrogen production performance among different zinc-cadmium ratios of ZnxCd1-xS, and a series of Zn0.5Cd0.5S/MIL-125-NH2(Ti) composites with different MIL-125-NH2(Ti) contents were prepared by simple ultrasonic method. When the percentage of addition of MIL-125-NH2(Ti) was 40%, the optimum hydrogen production rate was 92,498 μmol h−1 g−1, and the photocatalytic activity was still stable even after 16 h. The mechanism investigations demonstrated that this excellent activity was owing to enhanced visible light absorption intensity, extremely efficient electron transfer and proper conduction band position. This work provides new insights into highly efficient and stable photocatalyst in hydrogen production from water without noble metal doping.

中文翻译：

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Zn0.5Cd0.5S/MIL-125-NH2(Ti)纳米复合材料：高效稳定的可见光制氢光催化剂

摘要 在可见光照射下光催化制氢是获得氢气的关键手段。在本研究中，研究了 Zn0.5Cd0.5S 在不同锌镉比的 ZnxCd1-xS 和一系列具有不同 MIL 的 Zn0.5Cd0.5S/MIL-125-NH2(Ti) 复合材料之间具有最佳的制氢性能-125-NH2(Ti)含量是通过简单的超声波方法制备的。当MIL-125-NH2(Ti)添加量为40%时，最佳产氢率为92498 μmol h-1 g-1，16 h后光催化活性仍稳定。机理研究表明，这种优异的活性是由于增强的可见光吸收强度、极其有效的电子转移和适当的导带位置。