Novel approaches of nanoceria with magnetic, photoluminescent, and gas-sensing properties

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dc.contributor.authorRocha, Leandro Silva Rosa [UNESP]
dc.contributor.authorAmoresi, Rafael Aparecido Ciola [UNESP]
dc.contributor.authorMoreno, Henrique Piccoli [UNESP]
dc.contributor.authorRamirez Gil, Miguel Angel [UNESP]
dc.contributor.authorPonce, Miguel Adolfo
dc.contributor.authorFoschini, Cesar Renato [UNESP]
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorSimões, Alexandre Zirpoli [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2021-07-27T01:25:46Z
dc.date.available2021-07-27T01:25:46Z
dc.date.issued2020-06-15
dc.description.abstractThe modification of CeO2 with rare-earth elements opens up a wide range of applications as biomedical devices using infrared emission as well as magnetic and gas-sensing devices, once the structural, morphological, photoluminescent, magnetic, electric, and gassensing properties of these systems are strongly correlated to quantum electronic transitions between rare-earth f-states among defective species. Quantitative phase analysis revealed that the nanopowders are free from secondary phases and crystallize in the fluorite-type cubic structure. Magnetic coercive field measurements on the powders indicate that the substitution of cerium with lanthanum (8 wt %), in a fluorite-type cubic structure, created oxygen vacancies and led to a decrease in the fraction of Ce species in the 3+ state, resulting in a stronger roomtemperature ferromagnetic response along with high coercivity (160 Oe). In addition to the magnetic and photoluminescent behavior, a fast response time (5.5 s) was observed after CO exposure, indicating that the defective structure of ceria-based materials corresponds to the key of success in terms of applications using photoluminescent, magnetic, or electrical behaviors.pt
dc.description.affiliationFaculty of Engineering of Guaratingueta, São Paulo State University, UNESP
dc.description.affiliationINTEMA - National University of Mar del Plata, Mar del Plata, Argentina
dc.description.sponsorshipOutra
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 2013/07296-2. 2017/19143-7. 2018/ 20590-0
dc.description.sponsorshipIdCNPq: 573636/2008-7
dc.description.sponsorshipIdINCTMN 2008/57872-1
dc.identifier.doi10.1021/acsomega.9b04250
dc.identifier.issn2470-1343
dc.identifier.orcid0000-0002-6059-2197
dc.identifier.orcid0000-0002-7523-6013
dc.identifier.orcid0000-0003-0275-0043
dc.identifier.orcid0000-0002-2681-1579
dc.identifier.orcid0000-0002-0262-7718
dc.identifier.orcid0000-0003-1300-4978
dc.identifier.orcid0000-0001-8062-7791
dc.identifier.orcid0000-0003-2535-2187
dc.identifier.urihttp://hdl.handle.net/11449/213659
dc.language.isoeng
dc.publisherACS Publications
dc.relationhttp://hdl.handle.net/11449/213643pt
dc.relationhttp://hdl.handle.net/11449/213650pt
dc.relationhttp://hdl.handle.net/11449/213656pt
dc.relationhttp://hdl.handle.net/11449/213657pt
dc.relation.ispartofACS Omegapt
dc.rights.accessRightsAcesso aberto
dc.subjectNanopartículaspt
dc.subjectNanoceriapt
dc.subjectPhotoluminescentpt
dc.subjectLuminescênciapt
dc.subjectGas-Sensing Propertiespt
dc.titleNovel approaches of nanoceria with magnetic, photoluminescent, and gas-sensing propertiespt
dc.title.alternativeNovel Approaches of Nanoceria with Magnetic, Photoluminescent, and Gas-Sensing Propertiespt
dc.typeArtigo
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Guaratinguetápt

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