Developing a new coating agent (TC-S) obtained by adding a novel binder to a titania sol. TC-S can be applied to various substrate materials such as glass, ceramics, metals and others. Studies on the photocatalytic degradation of acetaldehyde by TC-S showed that this new coating agent is twice as active as commercial TiO2. It also shows substantial photocatalytic activity in the absence of UV light, whereas the commercial titania does not.
A visible light responsive TiO2 photocatalyst powder (TPS) was produced by a wet-chemical process, which can be applied as a mass production process. TPS decomposes acetaldehyde under irradiation of the light with wavelength lower than 550nm. Under fluorescent lamp irradiation, the activity of TPS was several times higher than that of commercial TiO2 photocatalyst. A coating agent (TSS) was prepared by an improved conventional coating agent preparation method. Anatase type crystalline particles are dispersed in water, therefore, the photocatalytic activity is observed by coating followed by drying without calcination. The TSS coating layer exhibited antibacterial activity under visible light irradiation.
Edited by: Andy
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