Electrospun Al2O3-TiO2 composite fibers were fabricated and characterized. Morphologies of the fibers after calcination at 500, 1000 and 1150 degrees C, respectively, were examined by SEM, which showed that the diameters of the fibers decreased with increasing calcination temperature. XRD and TGA/DTA revealed that the Al2O3-TiO2 fibers consisted of alpha-Al2O3 and rutile TiO2 phases after calcination above 1150 degrees C. FE-SEM images showed that the Al2O3-TiO2 composite was consisted of both small round particles and large block-like ones, which were assigned as alpha-Al2O3 and rutile TiO2 crystals, respectively. The Al2O3-TiO2 fibers displayed a photocatalytic reaction to decompose acetaldehyde under UV irradiation. (C) 2009 The Ceramic society of Japan. All rights reserved.