Synthesis, characterization and evaluation of the photocatalytic properties of WO3 obtained through the polyol method

Detalhes bibliográficos
Autor(a) principal: De Carvalho Neto, Alberto Gonçalves Vieira [UNESP]
Data de Publicação: 2021
Outros Autores: Rissato, Sandra Regina [UNESP], De Carvalho, Heloane Andrade Vieira [UNESP], Favaro, Silvia Luciana, Radovanovic, Eduardo, Pellosi, Diogo Silva, Fortes, João Paulo [UNESP], Dos Santos, Dayse Iara [UNESP], Saeki, Margarida Juri [UNESP]
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S1517-707620210004.1395
http://hdl.handle.net/11449/230427
Resumo: This work shows a synthetic route mediated by tetraethylene glycol (P. E. 325 ° C) in which tungstic acid is used as the starting material. The formation of a stable blue suspension was observed during the course of the reaction. The size of the particles depends on the synthesis time, and particles of size around 400 nm were obtained after 15 minutes of reaction in tetraethylene glycol. The particulate materials were then annealed at different temperatures: 150 °, 350 ° C, 500 ° C and 800 ° C, and characterized by TGA/DSC, DRX, FT-RAMAN, MEV, UV-VIS optical spectroscopy and N2 adsorption at 77K. It was observed that the synthesis provided WO3 under orthorhombic phase that evolved to monoclinic after heat treatment at a temperature equal to or greater than 350 ° C. The morphological characterization indicated the formation of ovoids parti-cles when treated at temperatures around 500 ° C, a temperature from which the surface area decreases dra-matically. The photocatalytic activity for the degradation of rhodamine B (rhB, 10 mg.L-1) was evaluated under ultraviolet irradiation (6 Watts). Greater activity was found for the material treated at 500 ° C, with total discoloration after 180 minutes in the presence of 10 mg of this catalyst.
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spelling Synthesis, characterization and evaluation of the photocatalytic properties of WO3 obtained through the polyol methodSíntese, caracterização e avaliação das propriedades fotocatalíticas do WO3 obtido através do método poliolPhotocalysisPolyol methodRhodamine BTungsten trioxideThis work shows a synthetic route mediated by tetraethylene glycol (P. E. 325 ° C) in which tungstic acid is used as the starting material. The formation of a stable blue suspension was observed during the course of the reaction. The size of the particles depends on the synthesis time, and particles of size around 400 nm were obtained after 15 minutes of reaction in tetraethylene glycol. The particulate materials were then annealed at different temperatures: 150 °, 350 ° C, 500 ° C and 800 ° C, and characterized by TGA/DSC, DRX, FT-RAMAN, MEV, UV-VIS optical spectroscopy and N2 adsorption at 77K. It was observed that the synthesis provided WO3 under orthorhombic phase that evolved to monoclinic after heat treatment at a temperature equal to or greater than 350 ° C. The morphological characterization indicated the formation of ovoids parti-cles when treated at temperatures around 500 ° C, a temperature from which the surface area decreases dra-matically. The photocatalytic activity for the degradation of rhodamine B (rhB, 10 mg.L-1) was evaluated under ultraviolet irradiation (6 Watts). Greater activity was found for the material treated at 500 ° C, with total discoloration after 180 minutes in the presence of 10 mg of this catalyst.Laboratório de Materiais Supercondutores e Nanoestruturados LMSCN Programa de Pós Graduação em Ciência e Tecnologia de Materiais Universidade Estadual Paulista, SPLaboratório de Química de Materiais e Sensores – LMSEM Universidade Estadual de Maringá, PRInstituto de Biociências de Botucatu Universidade Estadual Paulista, SPLaboratório de Materiais Híbridos (LMH) Universidade Federal de São Paulo (UNIFESP), Rua São Nicolau, 210, SPFaculdade de Engenharia de Bauru Programa de Pós Graduação em Engenharia Civil e Ambiental Universidade Esta-dual Paulista “Júlio de Mesquita Filho” – Campus Bauru, SPLaboratório de Materiais Supercondutores e Nanoestruturados LMSCN Programa de Pós Graduação em Ciência e Tecnologia de Materiais Universidade Estadual Paulista, SPInstituto de Biociências de Botucatu Universidade Estadual Paulista, SPFaculdade de Engenharia de Bauru Programa de Pós Graduação em Engenharia Civil e Ambiental Universidade Esta-dual Paulista “Júlio de Mesquita Filho” – Campus Bauru, SPUniversidade Estadual Paulista (UNESP)Universidade Estadual de Maringá (UEM)Universidade Federal de São Paulo (UNIFESP)De Carvalho Neto, Alberto Gonçalves Vieira [UNESP]Rissato, Sandra Regina [UNESP]De Carvalho, Heloane Andrade Vieira [UNESP]Favaro, Silvia LucianaRadovanovic, EduardoPellosi, Diogo SilvaFortes, João Paulo [UNESP]Dos Santos, Dayse Iara [UNESP]Saeki, Margarida Juri [UNESP]2022-04-29T08:39:53Z2022-04-29T08:39:53Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1590/S1517-707620210004.1395Revista Materia, v. 26, n. 4, 2021.1517-7076http://hdl.handle.net/11449/23042710.1590/S1517-707620210004.13952-s2.0-85124994944Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Materiainfo:eu-repo/semantics/openAccess2024-06-28T12:56:51Zoai:repositorio.unesp.br:11449/230427Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:53:32.092928Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Synthesis, characterization and evaluation of the photocatalytic properties of WO3 obtained through the polyol method
Síntese, caracterização e avaliação das propriedades fotocatalíticas do WO3 obtido através do método poliol
title Synthesis, characterization and evaluation of the photocatalytic properties of WO3 obtained through the polyol method
spellingShingle Synthesis, characterization and evaluation of the photocatalytic properties of WO3 obtained through the polyol method
De Carvalho Neto, Alberto Gonçalves Vieira [UNESP]
Photocalysis
Polyol method
Rhodamine B
Tungsten trioxide
title_short Synthesis, characterization and evaluation of the photocatalytic properties of WO3 obtained through the polyol method
title_full Synthesis, characterization and evaluation of the photocatalytic properties of WO3 obtained through the polyol method
title_fullStr Synthesis, characterization and evaluation of the photocatalytic properties of WO3 obtained through the polyol method
title_full_unstemmed Synthesis, characterization and evaluation of the photocatalytic properties of WO3 obtained through the polyol method
title_sort Synthesis, characterization and evaluation of the photocatalytic properties of WO3 obtained through the polyol method
author De Carvalho Neto, Alberto Gonçalves Vieira [UNESP]
author_facet De Carvalho Neto, Alberto Gonçalves Vieira [UNESP]
Rissato, Sandra Regina [UNESP]
De Carvalho, Heloane Andrade Vieira [UNESP]
Favaro, Silvia Luciana
Radovanovic, Eduardo
Pellosi, Diogo Silva
Fortes, João Paulo [UNESP]
Dos Santos, Dayse Iara [UNESP]
Saeki, Margarida Juri [UNESP]
author_role author
author2 Rissato, Sandra Regina [UNESP]
De Carvalho, Heloane Andrade Vieira [UNESP]
Favaro, Silvia Luciana
Radovanovic, Eduardo
Pellosi, Diogo Silva
Fortes, João Paulo [UNESP]
Dos Santos, Dayse Iara [UNESP]
Saeki, Margarida Juri [UNESP]
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Universidade Estadual de Maringá (UEM)
Universidade Federal de São Paulo (UNIFESP)
dc.contributor.author.fl_str_mv De Carvalho Neto, Alberto Gonçalves Vieira [UNESP]
Rissato, Sandra Regina [UNESP]
De Carvalho, Heloane Andrade Vieira [UNESP]
Favaro, Silvia Luciana
Radovanovic, Eduardo
Pellosi, Diogo Silva
Fortes, João Paulo [UNESP]
Dos Santos, Dayse Iara [UNESP]
Saeki, Margarida Juri [UNESP]
dc.subject.por.fl_str_mv Photocalysis
Polyol method
Rhodamine B
Tungsten trioxide
topic Photocalysis
Polyol method
Rhodamine B
Tungsten trioxide
description This work shows a synthetic route mediated by tetraethylene glycol (P. E. 325 ° C) in which tungstic acid is used as the starting material. The formation of a stable blue suspension was observed during the course of the reaction. The size of the particles depends on the synthesis time, and particles of size around 400 nm were obtained after 15 minutes of reaction in tetraethylene glycol. The particulate materials were then annealed at different temperatures: 150 °, 350 ° C, 500 ° C and 800 ° C, and characterized by TGA/DSC, DRX, FT-RAMAN, MEV, UV-VIS optical spectroscopy and N2 adsorption at 77K. It was observed that the synthesis provided WO3 under orthorhombic phase that evolved to monoclinic after heat treatment at a temperature equal to or greater than 350 ° C. The morphological characterization indicated the formation of ovoids parti-cles when treated at temperatures around 500 ° C, a temperature from which the surface area decreases dra-matically. The photocatalytic activity for the degradation of rhodamine B (rhB, 10 mg.L-1) was evaluated under ultraviolet irradiation (6 Watts). Greater activity was found for the material treated at 500 ° C, with total discoloration after 180 minutes in the presence of 10 mg of this catalyst.
publishDate 2021
dc.date.none.fl_str_mv 2021-01-01
2022-04-29T08:39:53Z
2022-04-29T08:39:53Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1590/S1517-707620210004.1395
Revista Materia, v. 26, n. 4, 2021.
1517-7076
http://hdl.handle.net/11449/230427
10.1590/S1517-707620210004.1395
2-s2.0-85124994944
url http://dx.doi.org/10.1590/S1517-707620210004.1395
http://hdl.handle.net/11449/230427
identifier_str_mv Revista Materia, v. 26, n. 4, 2021.
1517-7076
10.1590/S1517-707620210004.1395
2-s2.0-85124994944
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv Revista Materia
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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