Photocatalyst with catalytic activity even in visible light region
OwnerShinya Matsuo, Takahisa Omatainventors
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Abstract
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−δ, and the n-type oxide semiconductor by an anatase-type titanium oxide.
Claims8
A photocatalyst having catalytic activity even in the visible-light range;
- the photocatalyst comprising an oxide composite having a junction formed by oxide semiconductors (I) and (II) which have photocatalytic properties with each other and whose energy levels of electrons at the bottom of the conduction band and energy levels of electrons at the top of the valence band in an energy band structure, based on the vacuum levels, differ from each other;
- at least one of the oxide semiconductors having photocatalytic properties even in the visible-light range;
- said oxide composite comprising an oxide composite having a heterojunction comprising a p-type oxide semiconductor and an n-type oxide semiconductor.
Dependencies are inferred from the claim text.