Photocatalytic activity of Fe treated AC/TiO₂composites between visible light and UV light irradiation

Abstract

FAT compounds photocatalysts were prepared with TiOSO4•xH2O (TOS) by a sol-gel method. The samples were characterized by scanning electron microscopy (SEM), BET specific surface area, X-ray diffraction analysis (XRD) and energy dispersive X-ray spectroscopy (EDX). The SEM results showed that ferric compounds and titanium dioxide were fixed onto the AC surfaces. The XRD results showed that Fe-AC/TiO2 composites mostly contained anatase phase. EDX showed the presence of C, O, and Ti with Fe peaks in all samples. The photocatalytic activities were evaluated by the photocatalytic oxidation of methylene blue (MB) solution, via compare photodegradation of MB solution under visible light and UV light separately. Fe-AC/TiO2 composites had an excellent photocatalytic under strong visible light irradiation. A small amount of Fe ions in AC/TiO2 particles could obviously enhance their photocatalytic activity.