Synthesis, characterization and evaluation of the photocatalytic properties of WO3 obtained through the polyol method
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , , , |
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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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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1808129562782990336 |