Design of Tetrahedrally Coordinated Metal Oxides Assembled Catalysts by Applying Dry Process and Their Photocatalytic Performances

以金属氯化物、有机金属络合物和金属醇盐为基块，采用逐步化学气相沉积(CVD)法设计了四面体配位金属氧化物组装催化剂。XAFS、UV-Vis、光致发光等表征表明，这些催化剂中的金属氧化物在催化剂载体表面的原子水平上以高度分散的状态存在。以单组分催化剂为参照物进行的对比研究表明，这些组装的催化剂在紫外光和可见光下对CO氧化和乙烯聚合等各种反应具有独特的、更高的光催化性能。

Tetrahedrally Coordinated Metal Oxides Assembled Catalysts was designed by a stepwise chemical vapor deposition (CVD) method using metal chlorides, organometallic complexes and metal alkoxides as building blocks. Characterizations by XAFS, UV-vis, photoluminescence measurements showed that the metal oxides in these catalysts existed in the highly dispersed state at the atomic level on the surface of catalyst supports. The comparative studies using single component catalyst as reference revealed that these assembled catalysts have unique and higher photocatalytic performances in various reactions such as CO oxidation and polymerization of ethylene under UV and visible light.