纳米金属和二维纳米材料是最有潜力的催化材料之一，环烷烃选择性催化氧化制备相应的醇和酮是工业上一个重要的反应。本项目研究含钨前驱体表面结构、表面电荷与有机极性基团作用机制，获得物理化学性质稳定的单层WO3纳米片；研究单层WO3片与纳米金属的键合作用机制，获得催化剂结构与形貌可控的单层WO3片纳米金属复合催化剂。结合光、热催化的优势，提出一条温和条件下高活性、高选择性光热催化空气氧化环烷烃的新思路，探索负载纳米金属促进单层WO3纳米片半导体载体的电子-空穴分离、高效产生活性氧化物种迅速引发自由基反应，载体提升活性组分的Haber-Weiss循环效率、加速自由基链传递，降低深度氧化的催化机制。揭示单层WO3片-纳米金属复合催化剂的作用下，光、热协同催化作用对环烷烃空气氧化活性的影响规律，为有效开发环烷烃氧化工艺提供科学依据，并为其他烷烃空气氧化提供借鉴。

The nano-metal and two-dimensional nano-material are one of the best potential catalysts owing to their outstanding performances in the area of catalysis. It is a very important reaction that alcohols and ketones are preparated by the selective catalytic oxidation of cycloalkanes in the field of industry. In the present research, we will obtain a single layer WO3 nanosheet with stable physical and chemistry properties, which can be synthesized by loading nano-metals on the surface of single layer WO3 nanosheet. The research proposal will combine the merits of light and heat, developing a novel of reaction route for the cyclalkane oxidation through air and light/heat with high activity and selectivity under the mild condition. The loaded nano-metal active species can inspire the single layer WO3 nanosheet to produce the electron hole separation, and the photocatalytic mechanism of radical reaction induced by oxide species that are from electron hole separation is investigated on the based our research. The mechanism of improving Haber-Weiss cycle efficiency and accelerating radicle species transport rate is also studied. The proposed research will explore the relationship between oxide activity and light/heat synergic action based on the catalyst of loaded nano-metal single layer WO3 nanosheets. The developed strategy opens a window for the cycloalkane oxidation process in the near future.