Electrospun fibers composed of Al₂O₃-TiO₂ nanocrystals

Abstract

Electrospun Al₂O₃-TiO₂ composite fibers were fabricated and characterized. Morphologies of the fibers after calcination at 500, 1000 and 1150°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 α-Al₂O₃ and rutile TiO₂ phases after calcination above 1150°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 α-Al₂O₃ and rutile TiO₂ crystals, respectively. The Al₂O₃-TiO₂ fibers displayed a photocatalytic reaction to decompose acetaldehyde under UV irradiation.