Abstract: Mesoporous titania was successfully prepared by the soft-template method. The low a ngle XRD pattern and BJH pore distribution indicated that the pores of mesoporou s titania were well ordered and had a average pore diameter of 4.75 nm. Cu( Ⅱ)-tetracarboxyphthalocyanine (CuPcTc)-sensitized mesoporous titania (CuPcTc -TiO2) photocatalyst samples were prepared by adsorption of CuPcTc on the surface of mesoporous titania. Under the irradiation of visible light (λ>5 50 nm), CuPcTc-TiO2 showed high photocatalytic activity for the degradat ion of fluorescein and had optimum visible-light activity when the CuPcTc ad sorption amount was 4% in mass fraction. In addition, CuPcTc-TiO2 exhibit ed higher visible-light photocatalytic activity than CuPcTc-sensitized P25 (CuP cTc-P25) for the degradation of fluorescein.

Key words: copper(Ⅱ)-tetracarboxyphthalocyanine, sensitization, titania, photocatalysis, visible light, fluorescein, degradation