W-doped niobate-based perovskites: Synthesis by ultrasonic spray pyrolysis and structural characterization

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidad de Concepción-
Autor(es): dc.contributorUniversidad Autónoma de Chile-
Autor(es): dc.creatorPraxedes, Fabiano R.-
Autor(es): dc.creatorNobre, Marcos A.L.-
Autor(es): dc.creatorOlean-Oliveira, André-
Autor(es): dc.creatorTeixeira, Marcos F.S.-
Autor(es): dc.creatorPoon, Po S.-
Autor(es): dc.creatorLanfredi, Silvania-
Autor(es): dc.creatorMatos, Juan-
Data de aceite: dc.date.accessioned2025-08-21T17:51:44Z-
Data de disponibilização: dc.date.available2025-08-21T17:51:44Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-15-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.ceramint.2023.05.005-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/247332-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/247332-
Descrição: dc.descriptionNanostructured hollow spheres composed of K0·5Na0.5(WxNb1-x)O3 were synthesized by ultrasonic spray pyrolysis. Correlations between the W-doping content and properties of the [NbO6] octahedra, including morphology, texture, crystalline structure, and polarization were found. Scanning and transmission electron microscopy analysis indicate the present samples are nanostructured hollow spheres. Textural analysis indicates the samples are composed of a balanced framework including micropores (40–50%) and mesopores (50–60%). Structural refinement by the Rietveld method indicated that non-isovalent W6+ cation only occupies the Nb5+ site in the host structure. Several space groups including Amm2, Pbcm, and Pm were used to refine the W-doped K0·5Na0·5NbO3 structure and the best adjustment was reached assuming the co-existence of two distinct symmetries. The FTIR bands associated with a corner-shared NbO6 octahedron suggested an increase in Nb–O bond length in agreement with the Rietveld refinement. In general, ultrasonic spray pyrolysis is an effective methodology for the one-step synthesis of nanostructured crystallites of W-doped niobate-based perovskites with a tailored structure and morphology.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionLaboratório Nacional de Nanotecnologia-
Descrição: dc.descriptionDepartment of Chemistry and Biochemistry São Paulo State University (Unesp) School of Technology and Sciences, SP-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute of Biosciences Humanities and Exact Sciences, SP-
Descrição: dc.descriptionDepartment of Physics São Paulo State University (Unesp) São Paulo State University (Unesp) School of Technology and Sciences, SP-
Descrição: dc.descriptionUnidad de Desarrollo Tecnológico (UDT) Universidad de Concepción, Barrio Universitario S/n-
Descrição: dc.descriptionInstituto de Ciencias Químicas Aplicadas Facultad de Ingeniería Universidad Autónoma de Chile-
Descrição: dc.descriptionDepartment of Chemistry and Biochemistry São Paulo State University (Unesp) School of Technology and Sciences, SP-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute of Biosciences Humanities and Exact Sciences, SP-
Descrição: dc.descriptionDepartment of Physics São Paulo State University (Unesp) São Paulo State University (Unesp) School of Technology and Sciences, SP-
Descrição: dc.descriptionCAPES: 001-
Descrição: dc.descriptionLaboratório Nacional de Nanotecnologia: TEM-C1-20210387-
Descrição: dc.descriptionLaboratório Nacional de Nanotecnologia: TEM-C1-27711-
Formato: dc.format24004-24017-
Idioma: dc.languageen-
Relação: dc.relationCeramics International-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAlkali niobate-based perovskites-
Palavras-chave: dc.subjectStructural characterization-
Palavras-chave: dc.subjectTungsten-doping-
Palavras-chave: dc.subjectUltrasonic spray pyrolysis-
Título: dc.titleW-doped niobate-based perovskites: Synthesis by ultrasonic spray pyrolysis and structural characterization-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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