| abstract |
(57) Abstract: A photocatalyst in which the surface area of a substrate is increased, the photocatalytic functional layer formed on the surface can be almost uniformly activated, and the contact efficiency between the fluid and the photocatalytic semiconductor is increased. And a photocatalytic device using the same. SOLUTION: Particles 3 for increasing the surface area are laminated and fixed on the surface of a substrate 2, and a photocatalytic function layer is formed on the surface of the particles 3, and the particles 3 are separated from the substrate 2 on the substrate side densely. Are roughly laminated according to the above. On the other hand, when used as a filter for solid-liquid separation, the substrate side may be coarse and the side remote from the substrate may be dense. |