Relationship among morphology, photoluminescence emission, and photocatalytic activity of Eu-doped ceria nanostructures: A surface-type effect

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dc.contributor.authorOrtega, P. P. [UNESP]
dc.contributor.authorAmoresi, R. A.C. [UNESP]
dc.contributor.authorTeodoro, M. D.
dc.contributor.authorLongo, E.
dc.contributor.authorPonce, M. A.
dc.contributor.authorSimões, A. Z. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade Federal do ABC (UFABC)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionNational Research Council (CONICET)
dc.date.accessioned2023-07-29T16:11:20Z
dc.date.available2023-07-29T16:11:20Z
dc.date.issued2023-01-01
dc.description.abstractHerein, we discuss the synthesis of Eu-doped ceria nanostructures via the microwave-assisted hydrothermal method. The morphological analysis showed that Eu-doped ceria nanoparticles, nanorods, nanocubes, and nanopolyhedrons with different sets of exposed facets were obtained. The structural characterization revealed that the samples were crystalline and without secondary phases. The optical analysis showed a decrease in the bandgap energies of the Eu-doped nanostructures compared with pure ceria nanoparticles, and different photoluminescence emissions were found depending on the morphology. The photocatalytic activity of each nanostructure was evaluated, and Eu-doped nanopolyhedrons were the most promising photocatalyst, exhibiting a 60% and 80% increase in RhB discoloration compared to the Eu-doped and pure ceria nanoparticles, respectively. The better performance of the nanopolyhedrons is probably associated with the presence of different exposed facets, such as (111), (200), (220), and (311). The main species involved in the photocatalytic process were holes. The performances of each nanostructure were associated with their different exposed facets, the concentration of oxygen vacancies, and surface defects.en
dc.description.affiliationSão Paulo State University (UNESP) School of Engineering of Guaratinguetá, Av. Dr. Ariberto Pereira da Cunha 333, Portal das Colinas, 12.516-410, Guaratinguetá
dc.description.affiliationFederal University of ABC (UFABC) Center for Engineering Modeling and Applied Social Sciences, Av. Dos Estados, 5001, SP
dc.description.affiliationFederal University of São Carlos (UFSCar), SP
dc.description.affiliationUniversity of Mar del Plata (UNMdP) Institute of Materials Science and Technology (INTEMA) National Research Council (CONICET), Av. Juan B. Justo 4302
dc.description.affiliationUnespSão Paulo State University (UNESP) School of Engineering of Guaratinguetá, Av. Dr. Ariberto Pereira da Cunha 333, Portal das Colinas, 12.516-410, Guaratinguetá
dc.identifierhttp://dx.doi.org/10.1016/j.ceramint.2023.03.270
dc.identifier.citationCeramics International.
dc.identifier.doi10.1016/j.ceramint.2023.03.270
dc.identifier.issn0272-8842
dc.identifier.scopus2-s2.0-85152657836
dc.identifier.urihttp://hdl.handle.net/11449/249864
dc.language.isoeng
dc.relation.ispartofCeramics International
dc.sourceScopus
dc.subjectCerium dioxide
dc.subjectMorphology
dc.subjectNanostructures
dc.subjectPhotocatalysis
dc.subjectRare-earth
dc.titleRelationship among morphology, photoluminescence emission, and photocatalytic activity of Eu-doped ceria nanostructures: A surface-type effecten
dc.typeArtigo
unesp.author.orcid0000-0002-4254-1281[1]
unesp.author.orcid0000-0002-7523-6013 0000-0002-7523-6013[2]
unesp.author.orcid0000-0003-2535-2187[6]
unesp.departmentMateriais e Tecnologia - FEGpt

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Guaratinguetá - FEG - Faculdade de Engenharia e Ciências