Abstract: TiO_2/ACF photocatalytic materials were prepared by the process including viscose-based nonwoven dipping in TiO_2 sol and drying, phosphoric acid activation, and calcining. The elements, crystalline structure, and surface morphology of samples were characterized by EDAX, XRD and SEM, respectively. In addition, the photocatalytic degradation of methylene blue in aqueous solution was used as a probe reaction to evaluate their photocatalytic activities. The result indicated that TiO_2 with anatase and rutile mixed-crystal phase was immobilized on the samples. Some holes were observed on the surface of the samples. TiO_2/ACF photocatalytic materials owned the excellent potocatalytic degradation performance under the light source of the UV lamp 20w. For the TiO_2/ACF material obtained by calcining at 500℃, the decoloration efficiency of methylene blue could reach 98.83%.

Key words: nano TiO_2, phosphoric acid activation, ACF, photocatalytic