Maciel, A. P.Lisboa Filho, Paulo Noronha [UNESP]Leite, E. R.Paiva-Santos, C. O.Schreiner, W. H.Maniette, Y.Longo, Elson [UNESP]2014-05-202014-05-202003-04-01Journal of the European Ceramic Society. Oxford: Elsevier B.V., v. 23, n. 5, p. 707-713, 2003.0955-2219http://hdl.handle.net/11449/39151Structural morphological studies in pure and Ce-doped tin dioxide nanoparticles with high stability against particle growth were performed in samples, obtained using the polymeric precursor method and prepared at different annealing temperatures. A Ce-rich surface layer was used to control the particle size and stabilize SnO2 against particle growth. The formation of this segregated layer can contribute to a decreased surface energy, acting in the driving force, or reducing the surface mobility. Only the cassiterite SnO2 phase was observed below 1000 degreesC and a secondary phase (CeO2) was observed for the Ce-doped SnO2 at temperatures higher than 1000 degreesC, when de-mixing process occurs. The evolution of crystallite size, microstrain and morphology of the nanoparticles with annealing temperatures was investigated by X-ray diffraction (XRD), associated to Rietveld refinements, X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). (C) 2002 Elsevier B.V. Ltd. All rights reserved.707-713engSnO2powders-chemical preparationX-ray methodsprecursors-organicArtigo10.1016/S0955-2219(02)00190-5WOS:000181196100010Acesso restrito13538624145320050000-0002-7734-4069