Jiang Qianqian, Li Li, Bi Jinhong, Liang Shijing, Liu Minghua
Department of Environmental Science and Engineering, Fuzhou University, Minhou 350108, China.
State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, China.
Nanomaterials (Basel). 2017 Jan 25;7(2):24. doi: 10.3390/nano7020024.
TiO₂ hollow spheres modified with spatially separated Ag species and RuO₂ cocatalysts have been prepared via an alkoxide hydrolysis-precipitation method and a facile impregnation method. High-resolution transmission electron microscopy studies indicate that Ag species and RuO₂ co-located on the inner and outer surface of TiO₂ hollow spheres, respectively. The resultant catalysts show significantly enhanced activity in photocatalytic hydrogen production under simulated sunlight attributed to spatially separated Ag species and RuO₂ cocatalysts on TiO₂ hollow spheres, which results in the efficient separation and transportation of photogenerated charge carriers.
通过醇盐水解沉淀法和简便的浸渍法制备了用空间分离的银物种和RuO₂助催化剂改性的TiO₂空心球。高分辨率透射电子显微镜研究表明，银物种和RuO₂分别位于TiO₂空心球的内表面和外表面。所得催化剂在模拟太阳光下的光催化产氢活性显著增强，这归因于TiO₂空心球上空间分离的银物种和RuO₂助催化剂，从而导致光生电荷载流子的有效分离和传输。
