Paint for detecting photocatalysis performance and its preparation and application

The present invention provides a paint which is used for detecting the photocatalysis capacity of the light self-cleaning material using TiO2 as active component. The invention develops a paint which can detect the photocatalysis capacity aiming at the insufficiencies of rigmarole and time-wasting and can not being detected on-site of the current self-cleaning capacity evaluating method. The paint is confected by the compounds which are taken as surfactant, dye active factor and co-active factor. The testing method is coating the paint on the surface of the light self-cleaning material, irradiating with ultraviolet after air drying, the variation of the paint color can be observed by two modes of observation by the eye of human and device testing, and the capacity is better when the time for color changing is shorter. The paint has the main advantages of good chemical stability, simple producing, accurate testing method, convenience, rapidity, without the support of the large-scale device and being able to be