Joint synthesis of Fe2 O3-SnO2 nanostructured composite by the polyol method and its photocatalytic performance in rhodamine-B bleaching
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1517-7076-RMAT-2022-0180 http://hdl.handle.net/11449/246893 |
Resumo: | Composites formed from semiconductor oxides have been synthesized and assessed for their properties and applications, as well as a photocatalyst for restoring aquifers through the degradation or bleaching of organic dyes. The Fe2 O3-SnO2 nanocomposite was prepared by the Polyol method, a technique not found for this composite so far in the literature, under reflux in ethylene glycol. The composite and the isolated oxides were synthesized by the same process, characterized, and evaluated as photocatalysts of Rhodamine-B in aqueous solution (10 mg.L⁻1). The materials collected after the reflux performed at time intervals of 1 h and 8 h generated Fe2 O3 and SnO2, respectively, were analyzed by TGA/DTA and by XRD. It was found that α-Fe2 O3 was obtained at 400 °C and SnO2 at 650 °C. This composite was treated at 700 °C for 1 h. The SEM proved the formation of a nanostructured composite with SnO2 nanoparticles. The BET curves indicated non-porous materials with surface areas of 18, 45 and 20 m2.g⁻1 for the samples prepared from Fe2 O3, SnO2 and the composite, respecti-vely. The band gaps estimated at 1.9 eV, 3.5 eV and 1.8 eV, in the same sequence as above. The bleaching tests of Rhodamine-B, pH 5.5 in exposure to visible and ultraviolet light, showed completely different properties. The Fe2 O3 particles showed physical adsorption capable of reducing light absorption by 75% in the initial 15 minutes, however, there was no bleaching over the next 75 minutes. The presence of SnO2 in the solution showed a maximum bleaching of 45% after 120 minutes. The discoloration obtained by the nanocomposite in 180 minutes was 20%, a result attributed to the total covering of the surface of the α-Fe2 O3 particles by the SnO2 nanoparticles, preventing both the physical adsorption of the dye onto the iron oxide and the progress of the absorption mechanism. light followed by dye degradation. |
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Joint synthesis of Fe2 O3-SnO2 nanostructured composite by the polyol method and its photocatalytic performance in rhodamine-B bleachingSíntese Conjunta do compósito nanoestruturado Fe2 O3-SnO2 pelo método poliol e seu desempenho fotocatalítico no descoramento da rodamina-BNanocompositesPhotocatalysisPolyolComposites formed from semiconductor oxides have been synthesized and assessed for their properties and applications, as well as a photocatalyst for restoring aquifers through the degradation or bleaching of organic dyes. The Fe2 O3-SnO2 nanocomposite was prepared by the Polyol method, a technique not found for this composite so far in the literature, under reflux in ethylene glycol. The composite and the isolated oxides were synthesized by the same process, characterized, and evaluated as photocatalysts of Rhodamine-B in aqueous solution (10 mg.L⁻1). The materials collected after the reflux performed at time intervals of 1 h and 8 h generated Fe2 O3 and SnO2, respectively, were analyzed by TGA/DTA and by XRD. It was found that α-Fe2 O3 was obtained at 400 °C and SnO2 at 650 °C. This composite was treated at 700 °C for 1 h. The SEM proved the formation of a nanostructured composite with SnO2 nanoparticles. The BET curves indicated non-porous materials with surface areas of 18, 45 and 20 m2.g⁻1 for the samples prepared from Fe2 O3, SnO2 and the composite, respecti-vely. The band gaps estimated at 1.9 eV, 3.5 eV and 1.8 eV, in the same sequence as above. The bleaching tests of Rhodamine-B, pH 5.5 in exposure to visible and ultraviolet light, showed completely different properties. The Fe2 O3 particles showed physical adsorption capable of reducing light absorption by 75% in the initial 15 minutes, however, there was no bleaching over the next 75 minutes. The presence of SnO2 in the solution showed a maximum bleaching of 45% after 120 minutes. The discoloration obtained by the nanocomposite in 180 minutes was 20%, a result attributed to the total covering of the surface of the α-Fe2 O3 particles by the SnO2 nanoparticles, preventing both the physical adsorption of the dye onto the iron oxide and the progress of the absorption mechanism. light followed by dye degradation.Universidade Estadual Paulista Faculdade de Ciências Programa de Pós-graduação em Ciências e Tecnologia de Materiais, Av. Eng. Luiz Edmundo Carrijo Coube, 14-01, Vargem Limpa,, São PauloUniversidade Estadual Paulista Faculdade de Ciências Programa de Pós-graduação em Ciências e Tecnologia de Materiais, Av. Eng. Luiz Edmundo Carrijo Coube, 14-01, Vargem Limpa,, São PauloUniversidade Estadual Paulista (UNESP)Bertuzzo, Vinícius Lima [UNESP]Neto, Alberto Vieira de Carvalho [UNESP]Dos Santos, Dayse Iara [UNESP]2023-07-29T12:53:24Z2023-07-29T12:53:24Z2023-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1590/1517-7076-RMAT-2022-0180Revista Materia, v. 28, n. 1, 2023.1517-7076http://hdl.handle.net/11449/24689310.1590/1517-7076-RMAT-2022-01802-s2.0-85148901429Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Materiainfo:eu-repo/semantics/openAccess2023-07-29T12:53:24Zoai:repositorio.unesp.br:11449/246893Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:40:46.552126Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Joint synthesis of Fe2 O3-SnO2 nanostructured composite by the polyol method and its photocatalytic performance in rhodamine-B bleaching Síntese Conjunta do compósito nanoestruturado Fe2 O3-SnO2 pelo método poliol e seu desempenho fotocatalítico no descoramento da rodamina-B |
title |
Joint synthesis of Fe2 O3-SnO2 nanostructured composite by the polyol method and its photocatalytic performance in rhodamine-B bleaching |
spellingShingle |
Joint synthesis of Fe2 O3-SnO2 nanostructured composite by the polyol method and its photocatalytic performance in rhodamine-B bleaching Bertuzzo, Vinícius Lima [UNESP] Nanocomposites Photocatalysis Polyol |
title_short |
Joint synthesis of Fe2 O3-SnO2 nanostructured composite by the polyol method and its photocatalytic performance in rhodamine-B bleaching |
title_full |
Joint synthesis of Fe2 O3-SnO2 nanostructured composite by the polyol method and its photocatalytic performance in rhodamine-B bleaching |
title_fullStr |
Joint synthesis of Fe2 O3-SnO2 nanostructured composite by the polyol method and its photocatalytic performance in rhodamine-B bleaching |
title_full_unstemmed |
Joint synthesis of Fe2 O3-SnO2 nanostructured composite by the polyol method and its photocatalytic performance in rhodamine-B bleaching |
title_sort |
Joint synthesis of Fe2 O3-SnO2 nanostructured composite by the polyol method and its photocatalytic performance in rhodamine-B bleaching |
author |
Bertuzzo, Vinícius Lima [UNESP] |
author_facet |
Bertuzzo, Vinícius Lima [UNESP] Neto, Alberto Vieira de Carvalho [UNESP] Dos Santos, Dayse Iara [UNESP] |
author_role |
author |
author2 |
Neto, Alberto Vieira de Carvalho [UNESP] Dos Santos, Dayse Iara [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Bertuzzo, Vinícius Lima [UNESP] Neto, Alberto Vieira de Carvalho [UNESP] Dos Santos, Dayse Iara [UNESP] |
dc.subject.por.fl_str_mv |
Nanocomposites Photocatalysis Polyol |
topic |
Nanocomposites Photocatalysis Polyol |
description |
Composites formed from semiconductor oxides have been synthesized and assessed for their properties and applications, as well as a photocatalyst for restoring aquifers through the degradation or bleaching of organic dyes. The Fe2 O3-SnO2 nanocomposite was prepared by the Polyol method, a technique not found for this composite so far in the literature, under reflux in ethylene glycol. The composite and the isolated oxides were synthesized by the same process, characterized, and evaluated as photocatalysts of Rhodamine-B in aqueous solution (10 mg.L⁻1). The materials collected after the reflux performed at time intervals of 1 h and 8 h generated Fe2 O3 and SnO2, respectively, were analyzed by TGA/DTA and by XRD. It was found that α-Fe2 O3 was obtained at 400 °C and SnO2 at 650 °C. This composite was treated at 700 °C for 1 h. The SEM proved the formation of a nanostructured composite with SnO2 nanoparticles. The BET curves indicated non-porous materials with surface areas of 18, 45 and 20 m2.g⁻1 for the samples prepared from Fe2 O3, SnO2 and the composite, respecti-vely. The band gaps estimated at 1.9 eV, 3.5 eV and 1.8 eV, in the same sequence as above. The bleaching tests of Rhodamine-B, pH 5.5 in exposure to visible and ultraviolet light, showed completely different properties. The Fe2 O3 particles showed physical adsorption capable of reducing light absorption by 75% in the initial 15 minutes, however, there was no bleaching over the next 75 minutes. The presence of SnO2 in the solution showed a maximum bleaching of 45% after 120 minutes. The discoloration obtained by the nanocomposite in 180 minutes was 20%, a result attributed to the total covering of the surface of the α-Fe2 O3 particles by the SnO2 nanoparticles, preventing both the physical adsorption of the dye onto the iron oxide and the progress of the absorption mechanism. light followed by dye degradation. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T12:53:24Z 2023-07-29T12:53:24Z 2023-01-01 |
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/10.1590/1517-7076-RMAT-2022-0180 Revista Materia, v. 28, n. 1, 2023. 1517-7076 http://hdl.handle.net/11449/246893 10.1590/1517-7076-RMAT-2022-0180 2-s2.0-85148901429 |
url |
http://dx.doi.org/10.1590/1517-7076-RMAT-2022-0180 http://hdl.handle.net/11449/246893 |
identifier_str_mv |
Revista Materia, v. 28, n. 1, 2023. 1517-7076 10.1590/1517-7076-RMAT-2022-0180 2-s2.0-85148901429 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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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 |
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UNESP |
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Repositório Institucional da UNESP |
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Repositório Institucional da UNESP |
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Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
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