DESIGN OF TiO_2/ACTIVATED CARBON FIBER SYSTEMS BY AN IONIZED CLUSTER BEAM METHOD AND THEIR APPLICATION FOR THE PHOTOCATALYTIC WATER PURIFICATION

摘要

Preparation of titanium oxide photocatalysts loaded on activated carbon fiber (ACF) using an ionized cluster beam (ICB) method and their photocatalytic reactivity for the water purification, the oxidative degradation of organic pollutants (alkyl alcohols, dichloroethane) diluted in water, was investigated. The utilization of the ICB method under oxygen atmosphere enables the preparation of titanium oxide photocatalysts on ACF relatively low temperature without causing any damages to the supports. Characterization using spectroscopic techniques indicates that fine particles of TiO_2 are formed on the supports mainly as an anatase structure. The combination of the photocatalytic reactivity of TiO_2 and the adsorption ability of ACF was effective for the degradation of oraganic pollutants diluted in water into CO_2, H_2O and HCl.