This work reports for the first time the photochemical transformation suffered by the UiO-66-NH MOF during hydrogen production under solar irradiation using different scavengers. Triethanolamine caused the complete dissolution of the MOF, while NaS/NaSO transformed the UiO-66-NH into a novel Zr-based material characterized by an amorphous structure with a production rate of 0.439 μmol H·g·h. The MOF-derived material maintained its performance during long-term on-stream experiments thanks to the electron transfer from the sulfide/sulfite ions to the valence band of the photocatalyst. However, significant doubts about the stability of UiO-66NH and other MOFs in the photocatalytic generation of hydrogen are arisen.

中文翻译：

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太阳照射下UiO-66-NH2制氢过程中的光化学转化

这项工作首次报道了 UiO-66-NH MOF 在太阳照射下使用不同清除剂制氢过程中所经历的光化学转化。三乙醇胺导致MOF完全溶解，而NaS/NaSO将UiO-66-NH转化为一种新型Zr基材料，其特征为无定形结构，产率为0.439 μmol H·g·h。由于电子从硫化物/亚硫酸盐离子转移到光催化剂的价带，MOF 衍生材料在长期运行实验中保持了其性能。然而，人们对 UiO-66NH 和其他 MOF 在光催化产氢中的稳定性产生了重大疑问。