PHOTOCATALYST EXHIBITING CATALYTIC ACTIVITY EVEN IN VISIBLE LIGHT REGION

摘要

The photocatalyst according to the present invention which exhibits a high catalytic function in the visible-light range comprises an oxide composite having a heterojunction comprising a p-type oxide semiconductor and an n-type oxide semiconductor which have photocatalytic properties with each other and at least one of which has photocatalytic properties even in the visible-light range. The p-type oxide semiconductor having photocatalytic properties even in the visible-light range is exemplified by a perovskite-type oxide Ca(Zr0.95Y0.05)O3- delta , and the n-type oxide semiconductor by an anatase-type titanium oxide. <IMAGE> <IMAGE>