Immobilization of TiO2 on Microporous Activated Carbon Fibers and Their Photodegradation Performance for Phenol

The immobilization of TiO_2 on ACF (TiO_2/ACF) was performed using epoxy resin as binder between TiO_2 and ACF, followed by calcination at different temperatures from 400 to 580℃ in a N_2 atmosphere. The properties of the resulting materials were characterized by BET, SEM, XRD and UV-Vis spectra. The photodegradation behavior of TiO_2/ACF prepared was investigated in aqueous solution using phenol as a target pollutant. It was found that the sample calcined at 460℃ exhibited the highest phenol removal efficiency. When used repeatedly, TiO_2/ACF still presented high photocatalytic efficiency, and the phenol removal in the third cycle was almost the same as Degussa P25, mainly (anatase). Moreover, TiO_2 is tightly bound to ACF, and can be easily handled and recovered from water.