Development of Ag–TiO[sub 2] (anatase) Particle Composite Coating Film for Photocatalyst and Effect of the Matrix Metal

The application of has been extensively studied, because the produces a photocatalytic reaction that decomposes harmful materials using sunlight energy. In this study, the immobilization of the particle on a brass substrate was investigated using the composite coating method. As a result of evaluating the, surface morphology using a scanning electron microscope, it was found that the codeposited (anatase) [] particles were exposed on the surface of the Ag or particle composite coating films. The proportion of the particle on the surface increased with increasing the codeposit volume ratio of the particle. The photocatalytic activity of the composite film was significantly better than that of the composite film. The reason for this difference was attributed to the effect of Ag itself (in the dark) and the synergistic effect of Ag and (under UV radiation).