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Preparation of TiO2 Fiber and Its Photocatalytic Properties

TiO 2 fibers were successfully synthesized by ACF template method. The structural and electronic properties were examined by using FE-SEM, TG/DTA, XRD, BET, EDX and XPS spectroscopy. TiO 2 fiber has a uniform diameter of 5-10 μm and rough surface. Ti precursor, ratio of Ti/ACF in preparation step and calcinations temperature of TiO 2 fibers were optimized for the photocatalytic application. The TiO 2 fiber which was prepared by using 15% Ti(SO 4 ) 2 /ACF solution and calcined at 773K showed the highest photocatalytic activity for the decomposition of acetaldehyde. The photocatalytic performance of TiO 2 fiber was higher than the commercial TiO 2 (Degussa P-25) because of its large surface area, high crystallinity and acid sites.