Ultrasmall precious metal clusters have attracted extensive attention for providing a very specific surface and promoting electron transfer. In this work, ultrasmall Au clusters based on defective TiO₂ nanosheets (Au/D-TiO₂) were prepared and introduced into photocatalytic hydrogen evolution. Different defects of TiO₂ nanosheets (D-TiO₂) were constructed using a heating process and then loaded with Au clusters. Compared with bare TiO₂, Au clusters established on defective TiO₂ nanosheets with a narrower band gap showed higher light absorption performances, resulting in obviously enhanced photocatalytic hydrogen production performances. The Au/D-TiO₂ displayed the greatly enhanced photocatalytic hydrogen evolution activity of 3,142.33 μmol h⁻¹ g⁻¹, which was over 45 times than the pure TiO₂. The results showed that the catalysts had good prospects in the field of photocatalytic hydrogen production.

超小型贵金属簇因提供非常特定的表面并促进电子转移而受到广泛关注。在这项工作中，基于缺陷的TiO ₂纳米片（Au / D-TiO ₂）制备了超小金簇，并将其引入光催化制氢。TiO ₂纳米片（D-TiO ₂）的不同缺陷是通过加热过程构建的，然后加载了金团簇。与裸露的TiO ₂相比，在带隙较窄的有缺陷的TiO ₂纳米片上建立的Au团簇具有更高的光吸收性能，从而显着增强了光催化制氢性能。金/二氧化钛₂显示出3,142.33μmolh ^-1  g ^-1的光催化氢释放活性大大增强，是纯TiO _2的45倍以上。结果表明，该催化剂在光催化制氢领域具有良好的前景。