Electrospinning of CeO2-ZnO composite nanofibers and their photocatalytic property

CeO2-ZnO composite nanofibers were fabricated via the electrospinning technique using zinc acetate and cerium nitrate as the precursors, poly(vinylpyrrolidone) as the fiber template, and 2:1(v/v) ethanol/water mixtures as the co-solvent, followed by thermal treatment at 600 degrees C for 3 h. Various characterization methods were employed to investigate the morphologies and structures of the nanofibers. The calcined composite nanofibers showed a continuous line feature with an average diameter of 46 nm composed of 15 +/- 3 nm CeO2 and ZnO nanoparticles. Photocatalytic activity experiments showed that the Rhodamine B was almost completely decomposed when it was catalyzed by CeO2-ZnO nanofibers within 3 h, while only 17.4% and 82.3% were decomposed under catalysis by CeO2 and ZnO nanofibers respectively. Such CeO2-ZnO composite nanofibers could have potential applications in the treatment of organic-polluted water. (C) 2011 Elsevier B.V. All rights reserved.