Titanium dioxide (TiO2) is one of the most used photocatalyst in research laboratories and in industry, because of its chemical stability and low price. However, even if it is extremely active under UV irradiation, it does not achieve same performances under solar and LED irradiation. Furthermore, it was recently claimed as «possible carcinogenic» if employed in form of nanoparticles (IARC). Therefore, the goal of this research is the development of new micrometric materials, alternative to titania, active in the visible-light region such as metal oxides, perovskites and carbon based compounds.
