Mono-dispersed nanometals could act as excellent cocatalysts. However, nanometals were apt to be oxidized and aggregated, and their activity was decreased. Herein, well-dispersed and small-sized Cu nanoparticles controlled by the mesoporous of TiO2 microspheres (TiO2 MS) were prepared. It was found that the Cu implanted into the hybrid (Cu–TiO2 MS) was mainly in the form of Cu0 with high dispersion and stability. Furthermore, the electron transfer can be significantly accelerated, the absorption of TiO2 can be improved, and the over-potential of hydrogen evolution was reduced. Thereby, it showed higher photocatalytic activity and good stability compared with those of the Cu-P25.

中文翻译：

---

负载特种铜纳米晶显着提高TiO2复合微球的光催化活性

单分散的纳米金属可以作为优良的助催化剂。然而，纳米金属容易被氧化和聚集，从而降低其活性。在此，制备了由介孔 TiO2 微球 (TiO2 MS) 控制的分散良好的小尺寸 Cu 纳米粒子。发现注入到杂化物（Cu-TiO2 MS）中的Cu主要以Cu0的形式存在，具有高分散性和稳定性。此外，可以显着加速电子转移，提高TiO2的吸收，降低析氢过电位。因此，与Cu-P25相比，它表现出更高的光催化活性和良好的稳定性。