Preparation and characterization of ceria nanospheres by microwave-hydrothermal method

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:32:49Z
dc.date.available2014-05-20T15:32:49Z
dc.date.created2014-05-20T15:32:49Z
dc.date.issued2008-12-15
dc.identifierMaterials Letters. Amsterdam: Elsevier B.V., v. 62, n. 30, p. 4509-4511, 2008.
dc.identifier0167-577X
dc.identifierhttp://hdl.handle.net/11449/41624
dc.identifier10.1016/j.matlet.2008.08.011
dc.identifierWOS:000260715800012
dc.identifier0477045906733254
dc.identifier0000-0003-2827-0208
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.
dc.languageeng
dc.publisherElsevier B.V.
dc.relationMaterials Letters
dc.relation2.687
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectCeramics
dc.subjectNanomaterials
dc.subjectCharacterization methods
dc.subjectCeria
dc.subjectMicrowave-hydrothermal method
dc.titlePreparation and characterization of ceria nanospheres by microwave-hydrothermal method
dc.typeArtículos de revistas


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