High activity photo-catalyst
AssigneeShowa Denko K.K.
InventorsJun Tanaka, Masayuki Sanbayashi, Yoshinori Ueyoshi, Hiroyuki Hagihara
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Abstract
When a polybasic acid salt containing at least one species selected from the group consisting of an alkaline earth metal, a transition metal, and Al is caused to be present on the surfaces of titanium dioxide fine particles, there are obtained photocatalytic particles and powder exhibiting sufficient photocatalytic properties when irradiated with light from a light source of low quantity of light. By use of the photo-functional particles and powder, an organic polymer composition, a slurry, a coating agent, and a product having a surface exhibiting photocatalytic property and hydrophilicity are obtained.
Claims23
A product comprising a film exhibiting photocatalytic property characterized in that, in 5 L of dried air containing 60 ppm hydrogen sulfide, after the film having a surface area of 400 cm2 is irradiated with light for four hours by use of a day white fluorescent lamp such that the intensity of UV rays of 365 nm is 6 μW/cm2, percent decomposition of the hydrogen sulfide is at least about 20%.
Dependencies are inferred from the claim text.