摘要 |
PROBLEM TO BE SOLVED: To enable the adhesion and growth of slime on a floor, a washing place, in a bathtub and on duckboards in a bath room to be prevented. SOLUTION: Bath room members are covered with a photocatalyst, which is photoexcited up to such a state that its durface is made superhydrophilic, so as to have a converted contact angle with water smaller than 10 deg.. Not only because insoluble soap scum, fat and other hydrophobic organic matter hardly adhere to the superhydrophilic surfacce, but also because they are easily washed away by being showered or wetted with water, a photocatalitic layer is kept clean on the surface. Bacterial, mold, yeast and the microbes immediately touch the surface of the photocatalitic layer, and thus, are effectively killed by the photooxidation of the photocatalyst. |