Publicação:
Influence of mineralizer agents on the growth of crystalline CeO 2 nanospheres by the microwave-hydrothermal method

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dc.contributor.authorDeus, R. C. [UNESP]
dc.contributor.authorCilense, M. [UNESP]
dc.contributor.authorFoschini, C. R. [UNESP]
dc.contributor.authorRamirez, M. A. [UNESP]
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorSimões, A. Z. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Itajubá (UNIFEI)
dc.date.accessioned2014-05-27T11:28:27Z
dc.date.available2014-05-27T11:28:27Z
dc.date.issued2013-02-15
dc.description.abstractCystalline ceria (CeO2) nanoparticles have been synthesized by a simple and fast microwave-assisted hydrothermal (MAH) under NaOH, KOH, and NH4OH mineralizers added to a cerium ammonium nitrate aqueous solution. The products were characterized by X-ray powder diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Fourier transformed-IR and Raman spectroscopies. Rietveld refinement reveals a cubic structure with a space group Fm3m while infrared data showed few traces of nitrates. Field emission scanning microcopy (FEG-SEM) revealed a homogeneous size distribution of nanometric CeO2 nanoparticles. The MAH process in KOH and NaOH showed most effective to dehydrate the adsorbed water and decrease the hydrogen bonding effect leaving a weakly agglomerated powder of hydrated ceria. TEM micrographs of CeO2 synthesized under MAH conditions reveal particles well-dispersed and homogeneously distributed. The MAH enabled cerium oxide to be synthesized at 100 °C for 8 min. © 2012 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniversidade Estadual Paulista-Unesp Faculdade de Engenharia de Guaratinguetá, Av. Dr. Ariberto Pereira da Cunha, CEP 12516-410 Guaratinguetá-SP
dc.description.affiliationUniversidade Federal de Itajubá-Unifei Campus Itabira, Rua São Paulo, 377 Bairro Amazonas, CEP 35900-37 Itabira, MG
dc.description.affiliationUniversidade Estadual Paulista-Unesp Instituto de Química Laboratório Interdisciplinar em Cerâmica (LIEC), Rua Professor Francisco Degni s/n, CEP 14800-90 Araraquara, SP
dc.description.affiliationUnespUniversidade Estadual Paulista-Unesp Faculdade de Engenharia de Guaratinguetá, Av. Dr. Ariberto Pereira da Cunha, CEP 12516-410 Guaratinguetá-SP
dc.description.affiliationUnespUniversidade Estadual Paulista-Unesp Instituto de Química Laboratório Interdisciplinar em Cerâmica (LIEC), Rua Professor Francisco Degni s/n, CEP 14800-90 Araraquara, SP
dc.format.extent245-251
dc.identifierhttp://dx.doi.org/10.1016/j.jallcom.2012.10.001
dc.identifier.citationJournal of Alloys and Compounds, v. 550, p. 245-251.
dc.identifier.doi10.1016/j.jallcom.2012.10.001
dc.identifier.issn0925-8388
dc.identifier.lattes9128353103083394
dc.identifier.lattes3573363486614904
dc.identifier.lattes1922357184842767
dc.identifier.orcid0000-0003-1300-4978
dc.identifier.scopus2-s2.0-84869131196
dc.identifier.urihttp://hdl.handle.net/11449/74597
dc.identifier.wosWOS:000312149700039
dc.language.isoeng
dc.relation.ispartofJournal of Alloys and Compounds
dc.relation.ispartofjcr3.779
dc.relation.ispartofsjr1,020
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectChemical synthesis
dc.subjectCrystal structure
dc.subjectElectron microscopy
dc.subjectMicrowave
dc.subjectNanoparticle
dc.subjectAdsorbed water
dc.subjectAgglomerated powders
dc.subjectAmmonium nitrate
dc.subjectCerium oxides
dc.subjectCubic structure
dc.subjectFEG-SEM
dc.subjectField emission scanning
dc.subjectField emission scanning electron microscopy
dc.subjectFourier
dc.subjectHydrogen-bonding effects
dc.subjectInfrared data
dc.subjectMicrowave-assisted
dc.subjectMicrowave-hydrothermal methods
dc.subjectNanometric CeO
dc.subjectSpace Groups
dc.subjectTransmission electron microscopy tem
dc.subjectWell-dispersed
dc.subjectXRD
dc.subjectAmmonium compounds
dc.subjectCerium
dc.subjectCerium compounds
dc.subjectEnamels
dc.subjectHydrogen bonds
dc.subjectMicrowaves
dc.subjectNanoparticles
dc.subjectRaman spectroscopy
dc.subjectRietveld refinement
dc.subjectTransmission electron microscopy
dc.subjectX ray powder diffraction
dc.subjectSynthesis (chemical)
dc.titleInfluence of mineralizer agents on the growth of crystalline CeO 2 nanospheres by the microwave-hydrothermal methoden
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dspace.entity.typePublication
unesp.author.lattes9128353103083394
unesp.author.lattes3573363486614904
unesp.author.lattes1922357184842767[3]
unesp.author.orcid0000-0003-1300-4978[3]
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Engenharia, Baurupt
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Engenharia, Guaratinguetápt
unesp.departmentEngenharia Mecânica - FEBpt
unesp.departmentMateriais e Tecnologia - FEGpt
unesp.departmentBioquímica e Tecnologia - IQpt

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Coleções

Bauru - FEB - Faculdade de Engenharia
Araraquara - IQAR - Instituto de Química
Guaratinguetá - FEG - Faculdade de Engenharia e Ciências