Contribution of CuO on lamellar BiVO4/Bi2O3-based semiconductor for photoconversion of CO2

Detalhes bibliográficos
Autor(a) principal: Corradini, Patricia Gon
Data de Publicação: 2023
Outros Autores: Brito, Juliana Ferreira de [UNESP], Blaskievicz, Sirlon F, Salvati, Byanca S, Menezes, Beatriz Costa e Silva [UNESP], Zanoni, Maria Valnice Boldrin [UNESP], Mascaro, Lucia Helena
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.jphotochem.2023.114901
http://hdl.handle.net/11449/250041
Resumo: Lamellar BiVO4 is a photocatalyst recognized as an effective visible-light-driven semiconductor that is active in CO2 reduction but faces challenges such as high recombination rate and low mobility of photogenerated charge carriers. Additionaly, CuXO are well-known materials for CO2 photosynthesis, and Bi2O3 improves the generation of organic compounds from CO2 reduction with more than one carbon. In this sense, this paper evaluates the influence of small amounts of copper oxide on lamellar BiVO4-Bi2O3 prepared by a microwave-assisted route on the CO2 photoreduction activity. Lamellar BiVO4-Bi2O3 powder catalysts modified by different percentages of CuO were synthesized using microwave heating at 140 °C and 1200 rpm for 15 min. Electrochemical and photochemical characterizations showed that small amounts of copper, such as 1.0%, enhanced the absorption of visible light, improved charge transfer, mitigated charge recombination, and increased the yield of products (acetone and methanol). Furthermore, the flat band potential of the catalyst modified with 1.0% of copper was located at a more negative potential than the unmodified sample, which favored the photocatalytic reduction of the CO2. As a result, the study achieved a 38-fold improvement in methanol generation (1373.5 µmol L−1 gcat−1) and a 62% increase in acetone formation (12.5 µmol L−1 gcat−1) under UV–Vis light incidence over 2 h of reaction at ambient pressure and temperature, compared to pure BiVO4 (36.3 µmol L−1 gcat−1 of methanol and 7.7 µmol L−1 gcat−1 of acetone).
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spelling Contribution of CuO on lamellar BiVO4/Bi2O3-based semiconductor for photoconversion of CO2CocatalystFuel productionGlobal warmingPhotosynthesisLamellar BiVO4 is a photocatalyst recognized as an effective visible-light-driven semiconductor that is active in CO2 reduction but faces challenges such as high recombination rate and low mobility of photogenerated charge carriers. Additionaly, CuXO are well-known materials for CO2 photosynthesis, and Bi2O3 improves the generation of organic compounds from CO2 reduction with more than one carbon. In this sense, this paper evaluates the influence of small amounts of copper oxide on lamellar BiVO4-Bi2O3 prepared by a microwave-assisted route on the CO2 photoreduction activity. Lamellar BiVO4-Bi2O3 powder catalysts modified by different percentages of CuO were synthesized using microwave heating at 140 °C and 1200 rpm for 15 min. Electrochemical and photochemical characterizations showed that small amounts of copper, such as 1.0%, enhanced the absorption of visible light, improved charge transfer, mitigated charge recombination, and increased the yield of products (acetone and methanol). Furthermore, the flat band potential of the catalyst modified with 1.0% of copper was located at a more negative potential than the unmodified sample, which favored the photocatalytic reduction of the CO2. As a result, the study achieved a 38-fold improvement in methanol generation (1373.5 µmol L−1 gcat−1) and a 62% increase in acetone formation (12.5 µmol L−1 gcat−1) under UV–Vis light incidence over 2 h of reaction at ambient pressure and temperature, compared to pure BiVO4 (36.3 µmol L−1 gcat−1 of methanol and 7.7 µmol L−1 gcat−1 of acetone).ASCRS Research FoundationDepartment of Chemistry Federal University of São Carlos, Rod. Washington Luiz, Km 235, SPFluminense Federal Institute of Education Science and Technology Campus Itaperuna, RJInstitute of Chemistry - Araraquara UNESP Rua Francisco Degni, 55, Bairro Quitandinha, SPInstitute of Chemistry - Araraquara UNESP Rua Francisco Degni, 55, Bairro Quitandinha, SPUniversidade Federal de São Carlos (UFSCar)Science and TechnologyUniversidade Estadual Paulista (UNESP)Corradini, Patricia GonBrito, Juliana Ferreira de [UNESP]Blaskievicz, Sirlon FSalvati, Byanca SMenezes, Beatriz Costa e Silva [UNESP]Zanoni, Maria Valnice Boldrin [UNESP]Mascaro, Lucia Helena2023-07-29T16:16:08Z2023-07-29T16:16:08Z2023-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.jphotochem.2023.114901Journal of Photochemistry and Photobiology A: Chemistry, v. 444.1010-6030http://hdl.handle.net/11449/25004110.1016/j.jphotochem.2023.1149012-s2.0-85161357613Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Photochemistry and Photobiology A: Chemistryinfo:eu-repo/semantics/openAccess2023-07-29T16:16:08Zoai:repositorio.unesp.br:11449/250041Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:23:26.898072Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Contribution of CuO on lamellar BiVO4/Bi2O3-based semiconductor for photoconversion of CO2
title Contribution of CuO on lamellar BiVO4/Bi2O3-based semiconductor for photoconversion of CO2
spellingShingle Contribution of CuO on lamellar BiVO4/Bi2O3-based semiconductor for photoconversion of CO2
Corradini, Patricia Gon
Cocatalyst
Fuel production
Global warming
Photosynthesis
title_short Contribution of CuO on lamellar BiVO4/Bi2O3-based semiconductor for photoconversion of CO2
title_full Contribution of CuO on lamellar BiVO4/Bi2O3-based semiconductor for photoconversion of CO2
title_fullStr Contribution of CuO on lamellar BiVO4/Bi2O3-based semiconductor for photoconversion of CO2
title_full_unstemmed Contribution of CuO on lamellar BiVO4/Bi2O3-based semiconductor for photoconversion of CO2
title_sort Contribution of CuO on lamellar BiVO4/Bi2O3-based semiconductor for photoconversion of CO2
author Corradini, Patricia Gon
author_facet Corradini, Patricia Gon
Brito, Juliana Ferreira de [UNESP]
Blaskievicz, Sirlon F
Salvati, Byanca S
Menezes, Beatriz Costa e Silva [UNESP]
Zanoni, Maria Valnice Boldrin [UNESP]
Mascaro, Lucia Helena
author_role author
author2 Brito, Juliana Ferreira de [UNESP]
Blaskievicz, Sirlon F
Salvati, Byanca S
Menezes, Beatriz Costa e Silva [UNESP]
Zanoni, Maria Valnice Boldrin [UNESP]
Mascaro, Lucia Helena
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Federal de São Carlos (UFSCar)
Science and Technology
Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Corradini, Patricia Gon
Brito, Juliana Ferreira de [UNESP]
Blaskievicz, Sirlon F
Salvati, Byanca S
Menezes, Beatriz Costa e Silva [UNESP]
Zanoni, Maria Valnice Boldrin [UNESP]
Mascaro, Lucia Helena
dc.subject.por.fl_str_mv Cocatalyst
Fuel production
Global warming
Photosynthesis
topic Cocatalyst
Fuel production
Global warming
Photosynthesis
description Lamellar BiVO4 is a photocatalyst recognized as an effective visible-light-driven semiconductor that is active in CO2 reduction but faces challenges such as high recombination rate and low mobility of photogenerated charge carriers. Additionaly, CuXO are well-known materials for CO2 photosynthesis, and Bi2O3 improves the generation of organic compounds from CO2 reduction with more than one carbon. In this sense, this paper evaluates the influence of small amounts of copper oxide on lamellar BiVO4-Bi2O3 prepared by a microwave-assisted route on the CO2 photoreduction activity. Lamellar BiVO4-Bi2O3 powder catalysts modified by different percentages of CuO were synthesized using microwave heating at 140 °C and 1200 rpm for 15 min. Electrochemical and photochemical characterizations showed that small amounts of copper, such as 1.0%, enhanced the absorption of visible light, improved charge transfer, mitigated charge recombination, and increased the yield of products (acetone and methanol). Furthermore, the flat band potential of the catalyst modified with 1.0% of copper was located at a more negative potential than the unmodified sample, which favored the photocatalytic reduction of the CO2. As a result, the study achieved a 38-fold improvement in methanol generation (1373.5 µmol L−1 gcat−1) and a 62% increase in acetone formation (12.5 µmol L−1 gcat−1) under UV–Vis light incidence over 2 h of reaction at ambient pressure and temperature, compared to pure BiVO4 (36.3 µmol L−1 gcat−1 of methanol and 7.7 µmol L−1 gcat−1 of acetone).
publishDate 2023
dc.date.none.fl_str_mv 2023-07-29T16:16:08Z
2023-07-29T16:16:08Z
2023-10-01
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/10.1016/j.jphotochem.2023.114901
Journal of Photochemistry and Photobiology A: Chemistry, v. 444.
1010-6030
http://hdl.handle.net/11449/250041
10.1016/j.jphotochem.2023.114901
2-s2.0-85161357613
url http://dx.doi.org/10.1016/j.jphotochem.2023.114901
http://hdl.handle.net/11449/250041
identifier_str_mv Journal of Photochemistry and Photobiology A: Chemistry, v. 444.
1010-6030
10.1016/j.jphotochem.2023.114901
2-s2.0-85161357613
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Photochemistry and Photobiology A: Chemistry
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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