| 摘要 |
PROBLEM TO BE SOLVED: To effectively remove a harmful material or the like taken into the vehicle by mounting a photocatalytic structural body composed of a photoreactive semiconductor carrying sheet, which is formed by applying a photoreactive semiconductor capable of photodecomposing the harmful material on a supporting body, in a ventilation port of an air circulation device mounted in the vehicle. SOLUTION: The photocatalytic structural body 2 composed of the photoreactive semiconductor carrying sheet, which is formed by coating or impregnating the supporting body with the photoreactive semiconductor capable of photodecomposing the harmful material or internally adding the photoreactive semiconductor in the supporting body, is mounted in the ventilation port 1 of the air circulation device mounted inside a car. The photoreactive semiconductor carrying sheet is provided with a photoreactive semiconductor-containing layer containing the photoreactive semiconductor, an inorganic binder containing one or both of silica sol or alumina sol and an organic polymer binder, and has a blending ratio of the photoreactive semiconductor to the inorganic binder from 5:1 to 1:5 and a blending ratio of the organic polymer binder per total solid matter in the photoreactive semiconductor- containing layer from 3 to 5 wt.% is preferable. |
