| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for detecting and evaluating simply photocatalyst activity on a building execution field, and a portable photocatalyst activity evaluation device therefor, with a background wherein, though, as a method for measuring the photocatalyst activity of a photocatalyst substance, a test material is carried into a laboratory as a sample and evaluated by using full-scale analysis method and analysis equipment, in the case where especially the photocatalyst substance is applied onto the surface of an external material or an internal material for building, there is no means for performing quality confirmation and quality guarantee on the execution field. <P>SOLUTION: A transparent adhesive tape wherein methylene blue is included in a base material is stuck on the external material surface or the like having an applied or included photocatalyst substance, and UV-LED light or visible LED light is irradiated from the surface, to thereby generate a photocatalyst reaction. A decoloration process of methylene blue by a reduction reaction of the photocatalyst is measured as a change with time of reflection intensity of red LED light irradiated to the sample surface as measuring light, and displayed as a digital numerical value, to thereby evaluate the photocatalyst activity. <P>COPYRIGHT: (C)2008,JPO&INPIT |
