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Preparation and characterization of ceria nanospheres by microwave-hydrothermal method

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dc.contributor.authorDos Santos, M. L. [UNESP]
dc.contributor.authorLima, R. C. [UNESP]
dc.contributor.authorRiccardi, C. S. [UNESP]
dc.contributor.authorTranquilin, R. L. [UNESP]
dc.contributor.authorBueno, Paulo Roberto [UNESP]
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:32:49Z
dc.date.available2014-05-20T15:32:49Z
dc.date.issued2008-12-15
dc.description.abstractCrystalline ceria (CeO2) nanoparticles have been successfully synthesized by a simple and fast microwave-hydrothermal method at 130 degrees C for 20 min. As-synthesized CeO2 powders were calcinated at 500 degrees C for 1, 2 and 4 h. The products were characterized by thermogravimetric analysis (TG-DTA), X-ray powder diffraction (XRD), field-emission scanning electron microscopy/STEM mode (FEG/STEM), Fourier Transformed-IR and RAMAN spectroscopies. It is shown that synthesized ceria powders have a spherical shape with particle size below 10 nm, a narrow distribution and exhibit weak agglomeration. The FTIR spectrum of the ceria exhibits strong broad band below 700 cm(-1) which is due to the delta (Ce-O-C) mode. Raman spectrum is characterized by the presence of a very strong band to 464.5 cm(-1). The microwave-hydrothermal method enabled cerium compounds to be synthesized at low temperature and shorter time. (C) 2008 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv Estadual Paulista, LIEC, Inst Chem, BR-14800900 Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, LIEC, Inst Chem, BR-14800900 Araraquara, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent4509-4511
dc.identifierhttp://dx.doi.org/10.1016/j.matlet.2008.08.011
dc.identifier.citationMaterials Letters. Amsterdam: Elsevier B.V., v. 62, n. 30, p. 4509-4511, 2008.
dc.identifier.doi10.1016/j.matlet.2008.08.011
dc.identifier.issn0167-577X
dc.identifier.lattes0477045906733254
dc.identifier.orcid0000-0003-2827-0208
dc.identifier.urihttp://hdl.handle.net/11449/41624
dc.identifier.wosWOS:000260715800012
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofMaterials Letters
dc.relation.ispartofjcr2.687
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectCeramicsen
dc.subjectNanomaterialsen
dc.subjectCharacterization methodsen
dc.subjectCeriaen
dc.subjectMicrowave-hydrothermal methoden
dc.titlePreparation and characterization of ceria nanospheres by microwave-hydrothermal methoden
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
unesp.author.lattes0477045906733254[5]
unesp.author.lattes0173401604473200[3]
unesp.author.orcid0000-0003-2827-0208[5]
unesp.author.orcid0000-0003-2192-5312[3]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentBioquímica e Tecnologia - IQARpt
unesp.departmentFísico-Química - IQARpt

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Araraquara - IQAR - Instituto de Química