State of the art and perspectives on materials and applications of photocatalysis over TiO2

The developments in TiO2-based materials, and applications including continuing progress in longstanding uses such as photocatalytic water or air treatment are discussed. Self-cleaning surfaces are attracting significant industrial interest and are already well on there way toward widespread commercialization. Indoor air treatment also seems to be a promising application, but the efficiency and the effect on the concentration of flow molar-mass carbonyl compounds need to be further evaluated in order to commercialize appliances appropriate to their respective use. It has been found that, for indoor air treatment, the time scale appears sufficient to degrade, within a finite space, a low total amount of pollutants.