Correlation of photocatalytic activity and defects generated in Ca2+-based heterojunctions

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorFederal Institute of São Paulo - IFSP-
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.creatorColeto, Ubirajara [UNESP]-
Autor(es): dc.creatorAmoresi, Rafael A. C. [UNESP]-
Autor(es): dc.creatorPereira, Chrystopher A. M. [UNESP]-
Autor(es): dc.creatorSchmidt, Bruna W. [UNESP]-
Autor(es): dc.creatorIani, Isabela M. [UNESP]-
Autor(es): dc.creatorSimões, Alexandre Z. [UNESP]-
Autor(es): dc.creatorMonteiro, Elias S. [UNESP]-
Autor(es): dc.creatorLongo, Elson-
Autor(es): dc.creatorZaghete, Maria A. [UNESP]-
Autor(es): dc.creatorPerazolli, Leinig A. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:53:18Z-
Data de disponibilização: dc.date.available2022-02-22T00:53:18Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2020-10-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s42452-020-03662-6-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/208391-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/208391-
Descrição: dc.descriptionIn this work a new semiconductor based on calcium heterojunction (CaO/CaTiO3) was evaluated to the optical properties correlated to crystalline lattice defects. The heterojunctions of the semiconductor were prepared by the sol–gel route and its formation was confirmed by the intimate contact interface between crystalline phases. Morphology and elemental composition of the nanometric heterojunction were evaluated. Chemical environment and composition of the surface were used to determine the oxidation state of the material constituents. The electronic structure was evaluated and the relationship among band gap energy, photoluminescent emission energy, and photocatalytic activity of the materials was demonstrated. Oxygen vacancies located on the surface promoted photoluminescent spectra emission in the green wavelength, making them more photoactive than those defects that emitted in the red region. The use of active species scavenger indicated that the photogenerated species with the greatest photocatalytic action was the superoxide radical. This study has developed calcium heterojunctions for application as photocatalysts, demonstrating the importance of the defects generated in the production of heterojunctions and the activity of photogenerated species, studied using scavengers.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionLIEC - Chemistry Institute São Paulo State University - UNESP-
Descrição: dc.descriptionDepartment of Chemistry Federal Institute of São Paulo - IFSP-
Descrição: dc.descriptionFaculty of Engineering of Guaratinguetá UNESP-
Descrição: dc.descriptionLIEC - Department of Chemistry São Carlos Federal University - UFSCar-
Descrição: dc.descriptionLIEC - Chemistry Institute São Paulo State University - UNESP-
Descrição: dc.descriptionFaculty of Engineering of Guaratinguetá UNESP-
Descrição: dc.descriptionFAPESP: 2017/19143-7-
Idioma: dc.languageen-
Relação: dc.relationSN Applied Sciences-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectHeterojunctions-
Palavras-chave: dc.subjectOxygen vacancies-
Palavras-chave: dc.subjectPhotocatalysis-
Palavras-chave: dc.subjectScavenger-
Palavras-chave: dc.subjectStructural defects-
Título: dc.titleCorrelation of photocatalytic activity and defects generated in Ca2+-based heterojunctions-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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