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

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade Federal de Itajubá (UNIFEI)
dc.date.accessioned2014-05-27T11:28:27Z
dc.date.accessioned2022-10-05T18:44:00Z
dc.date.available2014-05-27T11:28:27Z
dc.date.available2022-10-05T18:44:00Z
dc.date.created2014-05-27T11:28:27Z
dc.date.issued2013-02-15
dc.identifierJournal of Alloys and Compounds, v. 550, p. 245-251.
dc.identifier0925-8388
dc.identifierhttp://hdl.handle.net/11449/74597
dc.identifier10.1016/j.jallcom.2012.10.001
dc.identifierWOS:000312149700039
dc.identifier2-s2.0-84869131196
dc.identifier9128353103083394
dc.identifier3573363486614904
dc.identifier1922357184842767
dc.identifier0000-0003-1300-4978
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3923549
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.
dc.languageeng
dc.relationJournal of Alloys and Compounds
dc.relation3.779
dc.relation1,020
dc.rightsAcesso 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 method
dc.typeArtigo


Este ítem pertenece a la siguiente institución