| abstract |
(57) [Abstract] Photocatalytic material and method for producing the same [PROBLEMS] To provide an oxide photocatalytic material having a highly active photocatalytic function. SOLUTION: In a photocatalyst material 10, a base 2 for fixing to a surface of a photocatalyst material support 1, a photocatalyst crystal 3 extending from the base 2 and having a hollow columnar structure, In the basic structure of the columnar hollow crystal composed of: a part of the surface 4 of the crystal body 3 is removed, or the outer wall portion 4 is formed at a low density, and the hollow photocatalytic crystal body 3 is formed. There is provided an internal exposed structure 8 penetrating through the crystal inside 5 having a function of exposing the aggregate structure of the photocatalyst particles 6 existing in the hollow inside 5. |