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Advances in Materials Science and Engineering
Volume 2014, Article ID 127531, 10 pages
http://dx.doi.org/10.1155/2014/127531
Research Article

Templateless Synthesis and Characterization of Hollow Gadolinium Doped Cerium Oxide Nanofibers by Electrospinning

1Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
2Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
3Nanotec-KKU Center of Excellence on Advanced Nanomaterials for Energy Production and Storage, Khon Kaen University, Khon Kaen 40002, Thailand
4Thailand Center of Excellence in Physics, CHE, Ministry of Education, Bangkok 10400, Thailand
5Integrated Nanotechnology Research Center, Khon Kaen University, Khon Kaen 40002, Thailand
6National Metal and Materials Technology Center (MTEC), Khlong Nueng, Khlong Luang, Pathumthani 12120, Thailand

Received 8 January 2014; Revised 20 April 2014; Accepted 28 April 2014; Published 2 June 2014

Academic Editor: Markku Leskela

Copyright © 2014 Chutima Thiabdokmai et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The hollow nanofibers of Ce0.8Gd0.2O2−δ (GDC20) were electrospun from the PVP and nitrate precursors. The evolution of hollow channel was investigated by TG-DTA and ex situ TEM for the fibers heated at 250–300°C for 1–5 h. The hollow cores were revealed during the crystallization of nano-GDC20 and the PVP decomposition stage. The structural and morphological properties of GDC20 fibers before and after being calcined at 500–900°C for 8 h were investigated by FTIR, FE-SEM, TEM, EDS, XRD, and Raman spectroscopy. The results from XRD and Raman scattering verify the successful doping of Gd3+ ions into the CeO2 host lattice. The conductivity of the cold-pressed GDC 20 pellet sintered at 1400°C is more than 0.01 S/cm at and above 600°C.