Reflux synthesis and hydrothermal processing of ZrO2 nanopowders at low temperature

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorMatos, J. M. E.
dc.creatorAnjos Junior, F. M.
dc.creatorCavalcante, L. S.
dc.creatorSantos, V.
dc.creatorLeal, S. H.
dc.creatorSantos Junior, L. S.
dc.creatorSantos, M. R. M. C.
dc.creatorLongo, Elson
dc.date2014-05-20T15:31:03Z
dc.date2016-10-25T18:06:46Z
dc.date2014-05-20T15:31:03Z
dc.date2016-10-25T18:06:46Z
dc.date2009-10-15
dc.date.accessioned2017-04-06T00:20:19Z
dc.date.available2017-04-06T00:20:19Z
dc.identifierMaterials Chemistry and Physics. Lausanne: Elsevier B.V. Sa, v. 117, n. 2-3, p. 455-459, 2009.
dc.identifier0254-0584
dc.identifierhttp://hdl.handle.net/11449/40296
dc.identifierhttp://acervodigital.unesp.br/handle/11449/40296
dc.identifier10.1016/j.matchemphys.2009.06.024
dc.identifierWOS:000270770900024
dc.identifierhttp://dx.doi.org/10.1016/j.matchemphys.2009.06.024
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/883089
dc.descriptionIn this paper, we report on the reflux synthesis at 90 degrees C and hydrothermal processing at 120 degrees C for obtention of zirconium oxide (ZrO2) nanopowders under several conditions. These nanopowders; were characterized by X-ray diffraction (XRD), Fourier transform Raman (FT-Raman) spectroscopy, adsorption-desorption N-2-isotherms, Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA) and field-emission scanning electron microscopy (FE-SEM). XRD patterns and Raman spectra indicated that ZrO2 nanopowders present a monoclinic structure. In addition, the hydrothermal processing promoted an increase in crystallinity of ZrO2 nanopowders. FT-IR spectra revealed a small shoulder on the nu (Zr-O) bands in transmittance spectra of the ZrO2 nanopowders. The decomposition of precursor was accompanied by evolution of TGA curves. The morphology of ZrO2 nanopowders was observed by FEG-SEM. Also, the FEG-SEM micrographs revealed that the presence of H2O2 in systems reduced the particle size, while the absence of promoted an increase in particle size. (C) 2009 Elsevier B.V. All rights reserved.
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageeng
dc.publisherElsevier B.V. Sa
dc.relationMaterials Chemistry and Physics
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectOxides
dc.subjectChemical synthesis
dc.subjectScherrer method
dc.subjectCrystal structure
dc.titleReflux synthesis and hydrothermal processing of ZrO2 nanopowders at low temperature
dc.typeOtro


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