Synthesis of PTSH-modified CeO2 nanoparticles: Effect of the modifier on structure, optical properties, and dispersibility

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorTruffault, Laurianne
dc.creatorAndrezza, Caroline
dc.creatorSantilli, Celso Valentim
dc.creatorPulcinelli, Sandra Helena
dc.date2014-05-27T11:29:39Z
dc.date2016-10-25T18:49:41Z
dc.date2014-05-27T11:29:39Z
dc.date2016-10-25T18:49:41Z
dc.date2013-06-05
dc.date.accessioned2017-04-06T02:26:21Z
dc.date.available2017-04-06T02:26:21Z
dc.identifierColloids and Surfaces A: Physicochemical and Engineering Aspects, v. 426, p. 63-69.
dc.identifier0927-7757
dc.identifier1873-4359
dc.identifierhttp://hdl.handle.net/11449/75611
dc.identifierhttp://acervodigital.unesp.br/handle/11449/75611
dc.identifier10.1016/j.colsurfa.2013.03.011
dc.identifier2-s2.0-84875791756
dc.identifierhttp://dx.doi.org/10.1016/j.colsurfa.2013.03.011
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/896351
dc.descriptionCeO2 nanoparticles were synthesized by the precipitation method and modified with para-toluene sulfonic acid (PTSH), either in situ or post-synthesis. The presence of PTSH in the samples was confirmed by FTIR. PXRD and FTIR analyses showed that the post-synthesis PTSH modification altered the CeO2 structure, whereas the in situ modification maintained intact the crystalline structure and UV-vis absorbance properties. For both in situ and post-synthesis modifications, TEM images revealed the presence of nanoparticles that were 5nm in size. The dispersibility of the in situ PTSH-modified material in a hydrophilic ureasil-poly(ethylene oxide) matrix was investigated using SAXS measurements, which indicated that CeO2 nanoparticles modified with PTSH in situ were less aggregated within the matrix, compared to unmodified CeO2 nanoparticles. © 2013 Elsevier B.V.
dc.languageeng
dc.relationColloids and Surfaces A: Physicochemical and Engineering Aspects
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectCeO2 nanoparticles
dc.subjectDispersibility
dc.subjectSurface modification
dc.subjectCrystalline structure
dc.subjectDispersibilities
dc.subjectEthylene oxides
dc.subjectFTIR analysis
dc.subjectPost-synthesis modification
dc.subjectPrecipitation methods
dc.subjectSitu modification
dc.subjectUV-vis absorbance
dc.subjectNanoparticles
dc.subjectOptical properties
dc.subjectPolyethylene oxides
dc.subjectPrecipitation (chemical)
dc.subjectSurface treatment
dc.subjectSynthesis (chemical)
dc.subject4 toluene sulfonic acid
dc.subjectcerium oxide
dc.subjectmacrogol
dc.subjectnanoparticle
dc.subjectsulfonic acid derivative
dc.subjecttitanium dioxide
dc.subjecttoluene
dc.subjectunclassified drug
dc.subjectinfrared spectroscopy
dc.subjectpriority journal
dc.subjectsynthesis
dc.subjecttransmission electron microscopy
dc.subjectultraviolet radiation
dc.titleSynthesis of PTSH-modified CeO2 nanoparticles: Effect of the modifier on structure, optical properties, and dispersibility
dc.typeOtro


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