Contribution of CuO on lamellar BiVO4/Bi2O3-based semiconductor for photoconversion of CO2
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , , , |
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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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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1808129315832856576 |