Design principle and development of non-titania based metal-oxide photocatalysts

以钨-铋和钼-铋复合氧化物粒子为非二氧化钛基光催化剂，考察了导带边能级对有机化合物氧化分解光催化活性的影响。以钨酸铋为例，用时间分辨红外吸收光谱研究了光生载流子动力学，并讨论了动力学与光催化活性的关系。碱性离子改性二氧化硅负载钒氧化物是近年来发展起来的光催化降解有机化合物的光催化剂。

The effect of energy level of conduction band edge on the photocatalytic activity for oxidative decomposition of organic compounds was investigated using tungsten-bismuth and molybdenum-bismuth mixed oxide particles as non-titania based photocatalysts. For bismuth tungstate, the photoinduced carrier dynamics was studied using time-resolved infrared absorption spectroscopy and the relation between the dynamics and photocatalytic activity was discussed. Alkali ion-modified silica-supported vanadium oxides were newly developed as a photocatalyst for photocatalytic oxidative decomposition of organic compounds.