Abstract
Titanium oxide catalysts were prepared on activated carbon fibers (ACF) using an ionized cluster beam (ICB) method and their photocatalytic reactivity for the degradation of organic compounds diluted in water was investigated.Utilization of the ICB method under oxygen atmosphere enables to prepare the titanium oxide photocatalysts onto ACFat relatively low temperatures without causing any damages of ACF support. Characterizations of these catalysts bymeans of SEM, EXAFS and XRD techniques showed that titanium oxide particles are formed on ACF in an anatasestructure. UV irradiation of these catalysts in the diluted aqueous solution of 2-propanol led to the formation of acetoneand CO2, indicating that the titanium oxide particles on ACF exhibit an efficient photocatalytic reactivity. Thus, thepresent results have clearly demonstrated that the ICB method is useful in the development of combination system ofthe titanium oxide photocatalysts with an activated carbon without calcination treatment at high temperatures.
