Synthesis and characterization of neodymium doped ceria nanocrystalline ceramic structures

USLU İ., Aytimur A., Ozturk M. K., Kocyigit S.

CERAMICS INTERNATIONAL, cilt.38, sa.6, ss.4943-4951, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 38 Sayı: 6
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.ceramint.2012.02.087
  • Dergi Adı: CERAMICS INTERNATIONAL
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.4943-4951
  • Anahtar Kelimeler: Calcination, Precursors: organic, Sintering, Nanocomposites, CeO2, Transition metal oxides, OXIDE FUEL-CELLS, OXYGEN-ION CONDUCTIVITY, COMBUSTION SYNTHESIS, ND, POWDERS, TEMPERATURE, ELECTROLYTE, GADOLINIA, TRANSPORT, BEHAVIOR
  • Gazi Üniversitesi Adresli: Evet

Özet

In this study, a new method to synthesize neodymium doped ceria ceramic nanopowders by the electrospinning of the hybrid polymers solution of their composite precursor was put forward. Calcined and sintered nanopowders were characterized by FT-IR, XRD, BET, SEM, and AFM techniques. According to the XRD analysis, the obtained powders are single phase and independent of the dopant concentration in the range investigated. The crystallite sizes were calculated using Scherrer equation. Moreover, lattice parameters, dislocation densities and microstrain values were calculated. BET results show that the increase of the neodymium doped content decrease the surface area of the composite powders, confirming the highly ordered micro and mesostructure. SEM and AFM results show that the samples have spherical grains. According to the surface roughness measurements, the increase in the amount of neodymium and the decrease in the amount of cerium decreased the surface roughness. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.