| 摘要 |
PROBLEM TO BE SOLVED: To heighten the decomposition function of a photocatalyst with a simple structure by forming a plurality of fine through holes in a matrix shape in pipe walls and setting a photocatalyst in the inner faces and the outer faces of the pipe walls for decomposing pollutants. SOLUTION: In this purification apparatus produced by installing a plurality of hollow pipes 1 in a cover-closed container having an injection inlet in the periphery of one end side and a discharge outlet in the periphery of the other end side, each hollow pipe 1 contains a photocatalyst particle 3 in the inner face side of the pipe wall and has a plurality of fine through holes 2 in a matrix shape in the pipe wall. The photocatalyst particle 3 is arranged by forcibly injecting a titania sol into each hollow pipe 1 or dipping each pipe in a titania sol. In the case each pipe is dipped in titania sol, the photocatalyst particle is stuck to the whole surface area of each hollow pipe 1. In this case, each of the hollow pipes 1 is made to have several mm or narrower diameter and the diameter of the fine through holes 2 is controlled to be several μm and the hollow pipes 1 are preferably made of a light transmissive material. Further, the hollow pipes 1 are produced from a material constituting of a base material and a photo-accumulating member mixed in the base material. |
