Synthesis and characterization of α-SnWO4 powders obtained by microwave-assisted hydrothermal method

Detalhes bibliográficos
Autor(a) principal: Barros,M. M. P.
Data de Publicação: 2022
Outros Autores: Almeida,K. C., Silva,S. A., Botelho,G.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Cerâmica (São Paulo. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132022000200236
Resumo: Abstract The structural, morphological, and optical properties of α-SnWO4 synthesized by microwave-assisted hydrothermal method at 150 °C for different times were investigated. XRD revealed the formation of the orthorhombic phase, without the presence of a secondary phase. The sample processed for 64 min showed a reduction in unit cell volume, suggesting a decrease in the structural defects present in the sample. The Raman spectroscopy confirmed the formation of α-SnWO4, with the presence of vibrational modes attributed to the [WO6] octahedron. FE-SEM images revealed the formation of agglomerate nanosheets in all samples. The band gap (Egap) of the samples presented values in the range from 1.58 to 1.70 eV. The increase in Egap value of the sample processed for 64 min corroborated the decrease in the structural defects suggested by the Rietveld refinement. Finally, the photoluminescence was measured, with maximum emission in the blue region of the electromagnetic spectrum around 454 nm, which was attributed to the [WO6] octahedron.
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spelling Synthesis and characterization of α-SnWO4 powders obtained by microwave-assisted hydrothermal methodα-SnWO4photoluminescencesynthesisRietveld refinementAbstract The structural, morphological, and optical properties of α-SnWO4 synthesized by microwave-assisted hydrothermal method at 150 °C for different times were investigated. XRD revealed the formation of the orthorhombic phase, without the presence of a secondary phase. The sample processed for 64 min showed a reduction in unit cell volume, suggesting a decrease in the structural defects present in the sample. The Raman spectroscopy confirmed the formation of α-SnWO4, with the presence of vibrational modes attributed to the [WO6] octahedron. FE-SEM images revealed the formation of agglomerate nanosheets in all samples. The band gap (Egap) of the samples presented values in the range from 1.58 to 1.70 eV. The increase in Egap value of the sample processed for 64 min corroborated the decrease in the structural defects suggested by the Rietveld refinement. Finally, the photoluminescence was measured, with maximum emission in the blue region of the electromagnetic spectrum around 454 nm, which was attributed to the [WO6] octahedron.Associação Brasileira de Cerâmica2022-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132022000200236Cerâmica v.68 n.386 2022reponame:Cerâmica (São Paulo. Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/0366-69132022683863259info:eu-repo/semantics/openAccessBarros,M. M. P.Almeida,K. C.Silva,S. A.Botelho,G.eng2022-07-05T00:00:00Zoai:scielo:S0366-69132022000200236Revistahttps://www.scielo.br/j/ce/PUBhttps://old.scielo.br/oai/scielo-oai.phpceram.abc@gmail.com||ceram.abc@gmail.com1678-45530366-6913opendoar:2022-07-05T00:00Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Synthesis and characterization of α-SnWO4 powders obtained by microwave-assisted hydrothermal method
title Synthesis and characterization of α-SnWO4 powders obtained by microwave-assisted hydrothermal method
spellingShingle Synthesis and characterization of α-SnWO4 powders obtained by microwave-assisted hydrothermal method
Barros,M. M. P.
α-SnWO4
photoluminescence
synthesis
Rietveld refinement
title_short Synthesis and characterization of α-SnWO4 powders obtained by microwave-assisted hydrothermal method
title_full Synthesis and characterization of α-SnWO4 powders obtained by microwave-assisted hydrothermal method
title_fullStr Synthesis and characterization of α-SnWO4 powders obtained by microwave-assisted hydrothermal method
title_full_unstemmed Synthesis and characterization of α-SnWO4 powders obtained by microwave-assisted hydrothermal method
title_sort Synthesis and characterization of α-SnWO4 powders obtained by microwave-assisted hydrothermal method
author Barros,M. M. P.
author_facet Barros,M. M. P.
Almeida,K. C.
Silva,S. A.
Botelho,G.
author_role author
author2 Almeida,K. C.
Silva,S. A.
Botelho,G.
author2_role author
author
author
dc.contributor.author.fl_str_mv Barros,M. M. P.
Almeida,K. C.
Silva,S. A.
Botelho,G.
dc.subject.por.fl_str_mv α-SnWO4
photoluminescence
synthesis
Rietveld refinement
topic α-SnWO4
photoluminescence
synthesis
Rietveld refinement
description Abstract The structural, morphological, and optical properties of α-SnWO4 synthesized by microwave-assisted hydrothermal method at 150 °C for different times were investigated. XRD revealed the formation of the orthorhombic phase, without the presence of a secondary phase. The sample processed for 64 min showed a reduction in unit cell volume, suggesting a decrease in the structural defects present in the sample. The Raman spectroscopy confirmed the formation of α-SnWO4, with the presence of vibrational modes attributed to the [WO6] octahedron. FE-SEM images revealed the formation of agglomerate nanosheets in all samples. The band gap (Egap) of the samples presented values in the range from 1.58 to 1.70 eV. The increase in Egap value of the sample processed for 64 min corroborated the decrease in the structural defects suggested by the Rietveld refinement. Finally, the photoluminescence was measured, with maximum emission in the blue region of the electromagnetic spectrum around 454 nm, which was attributed to the [WO6] octahedron.
publishDate 2022
dc.date.none.fl_str_mv 2022-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132022000200236
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132022000200236
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0366-69132022683863259
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Cerâmica
publisher.none.fl_str_mv Associação Brasileira de Cerâmica
dc.source.none.fl_str_mv Cerâmica v.68 n.386 2022
reponame:Cerâmica (São Paulo. Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Cerâmica (São Paulo. Online)
collection Cerâmica (São Paulo. Online)
repository.name.fl_str_mv Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ceram.abc@gmail.com||ceram.abc@gmail.com
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