Bismuth vanadate photoelectrodes with high photovoltage behave as photoanode and photocathode in photoelectrochemical cells for water splitting.
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFOP |
Texto Completo: | http://www.repositorio.ufop.br/handle/123456789/9947 https://onlinelibrary.wiley.com/doi/epdf/10.1002/cssc.201701929 |
Resumo: | Using dual-photoelectrode photoelectrochemical (PEC) devices based on earth-abundant metal oxides for unbiased water splitting is an attractive means of producing green H2 fuel, but is challenging, owing to low photovoltages generated by PEC cells. This problem can be solved by coupling n-type BiVO4 with n-type Bi4V2O11 to create a virtual p/n junction due to the formation of a hole-inversion layer at the semiconductor interface. Thus, photoelectrodes with high photovoltage outputs were synthesized. The photoelectrodes exhibited features of pand n-type semiconductors when illuminated under an applied bias, suggesting their use as photoanode and photocathode in a dual-photoelectrode PEC cell. This concept was proved by connecting a 1 mol% W-doped BiVO4/Bi4V2O11 photoanode with an undoped BiVO4/Bi4V2O11 photocathode, which produced a high photovoltage of 1.54 V, sufficient to drive standalone water splitting with 0.95% efficiency. |
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Santos, Wayler Silva dosRodriguez, Mariandry del Valle RodriguezKhoury, Julia M. O.Nascimento, Luiza A.Mesquita, João Paulo deSilva, Adilson Cândido daNogueira, Francisco Guilherme EstevesPereira, Márcio César2018-05-17T13:20:55Z2018-05-17T13:20:55Z2018SANTOS, W. S. dos et al. Bismuth vanadate photoelectrodes with high photovoltage behave as photoanode and photocathode in photoelectrochemical cells for water splitting. ChemSusChem, v. 11, p. 589-597, 2018. Disponível em: <https://onlinelibrary.wiley.com/doi/epdf/10.1002/cssc.201701929>. Acesso em: 05 abr. 2018.1864564Xhttp://www.repositorio.ufop.br/handle/123456789/9947https://onlinelibrary.wiley.com/doi/epdf/10.1002/cssc.201701929Using dual-photoelectrode photoelectrochemical (PEC) devices based on earth-abundant metal oxides for unbiased water splitting is an attractive means of producing green H2 fuel, but is challenging, owing to low photovoltages generated by PEC cells. This problem can be solved by coupling n-type BiVO4 with n-type Bi4V2O11 to create a virtual p/n junction due to the formation of a hole-inversion layer at the semiconductor interface. Thus, photoelectrodes with high photovoltage outputs were synthesized. The photoelectrodes exhibited features of pand n-type semiconductors when illuminated under an applied bias, suggesting their use as photoanode and photocathode in a dual-photoelectrode PEC cell. This concept was proved by connecting a 1 mol% W-doped BiVO4/Bi4V2O11 photoanode with an undoped BiVO4/Bi4V2O11 photocathode, which produced a high photovoltage of 1.54 V, sufficient to drive standalone water splitting with 0.95% efficiency.Bismuth vanadate photoelectrodes with high photovoltage behave as photoanode and photocathode in photoelectrochemical cells for water splitting.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOPLICENSElicense.txtlicense.txttext/plain; charset=utf-8924http://www.repositorio.ufop.br/bitstream/123456789/9947/2/license.txt62604f8d955274beb56c80ce1ee5dcaeMD52ORIGINALARTIGO_BismuthVanadatePhotoelectrodes.pdfARTIGO_BismuthVanadatePhotoelectrodes.pdfapplication/pdf1918319http://www.repositorio.ufop.br/bitstream/123456789/9947/1/ARTIGO_BismuthVanadatePhotoelectrodes.pdf097eefa701d1de31f6e080d864970d28MD51123456789/99472019-04-30 08:23:13.919oai:localhost: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ório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332019-04-30T12:23:13Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false |
dc.title.pt_BR.fl_str_mv |
Bismuth vanadate photoelectrodes with high photovoltage behave as photoanode and photocathode in photoelectrochemical cells for water splitting. |
title |
Bismuth vanadate photoelectrodes with high photovoltage behave as photoanode and photocathode in photoelectrochemical cells for water splitting. |
spellingShingle |
Bismuth vanadate photoelectrodes with high photovoltage behave as photoanode and photocathode in photoelectrochemical cells for water splitting. Santos, Wayler Silva dos |
title_short |
Bismuth vanadate photoelectrodes with high photovoltage behave as photoanode and photocathode in photoelectrochemical cells for water splitting. |
title_full |
Bismuth vanadate photoelectrodes with high photovoltage behave as photoanode and photocathode in photoelectrochemical cells for water splitting. |
title_fullStr |
Bismuth vanadate photoelectrodes with high photovoltage behave as photoanode and photocathode in photoelectrochemical cells for water splitting. |
title_full_unstemmed |
Bismuth vanadate photoelectrodes with high photovoltage behave as photoanode and photocathode in photoelectrochemical cells for water splitting. |
title_sort |
Bismuth vanadate photoelectrodes with high photovoltage behave as photoanode and photocathode in photoelectrochemical cells for water splitting. |
author |
Santos, Wayler Silva dos |
author_facet |
Santos, Wayler Silva dos Rodriguez, Mariandry del Valle Rodriguez Khoury, Julia M. O. Nascimento, Luiza A. Mesquita, João Paulo de Silva, Adilson Cândido da Nogueira, Francisco Guilherme Esteves Pereira, Márcio César |
author_role |
author |
author2 |
Rodriguez, Mariandry del Valle Rodriguez Khoury, Julia M. O. Nascimento, Luiza A. Mesquita, João Paulo de Silva, Adilson Cândido da Nogueira, Francisco Guilherme Esteves Pereira, Márcio César |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Santos, Wayler Silva dos Rodriguez, Mariandry del Valle Rodriguez Khoury, Julia M. O. Nascimento, Luiza A. Mesquita, João Paulo de Silva, Adilson Cândido da Nogueira, Francisco Guilherme Esteves Pereira, Márcio César |
description |
Using dual-photoelectrode photoelectrochemical (PEC) devices based on earth-abundant metal oxides for unbiased water splitting is an attractive means of producing green H2 fuel, but is challenging, owing to low photovoltages generated by PEC cells. This problem can be solved by coupling n-type BiVO4 with n-type Bi4V2O11 to create a virtual p/n junction due to the formation of a hole-inversion layer at the semiconductor interface. Thus, photoelectrodes with high photovoltage outputs were synthesized. The photoelectrodes exhibited features of pand n-type semiconductors when illuminated under an applied bias, suggesting their use as photoanode and photocathode in a dual-photoelectrode PEC cell. This concept was proved by connecting a 1 mol% W-doped BiVO4/Bi4V2O11 photoanode with an undoped BiVO4/Bi4V2O11 photocathode, which produced a high photovoltage of 1.54 V, sufficient to drive standalone water splitting with 0.95% efficiency. |
publishDate |
2018 |
dc.date.accessioned.fl_str_mv |
2018-05-17T13:20:55Z |
dc.date.available.fl_str_mv |
2018-05-17T13:20:55Z |
dc.date.issued.fl_str_mv |
2018 |
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.citation.fl_str_mv |
SANTOS, W. S. dos et al. Bismuth vanadate photoelectrodes with high photovoltage behave as photoanode and photocathode in photoelectrochemical cells for water splitting. ChemSusChem, v. 11, p. 589-597, 2018. Disponível em: <https://onlinelibrary.wiley.com/doi/epdf/10.1002/cssc.201701929>. Acesso em: 05 abr. 2018. |
dc.identifier.uri.fl_str_mv |
http://www.repositorio.ufop.br/handle/123456789/9947 |
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1864564X |
dc.identifier.uri2.pt_BR.fl_str_mv |
https://onlinelibrary.wiley.com/doi/epdf/10.1002/cssc.201701929 |
identifier_str_mv |
SANTOS, W. S. dos et al. Bismuth vanadate photoelectrodes with high photovoltage behave as photoanode and photocathode in photoelectrochemical cells for water splitting. ChemSusChem, v. 11, p. 589-597, 2018. Disponível em: <https://onlinelibrary.wiley.com/doi/epdf/10.1002/cssc.201701929>. Acesso em: 05 abr. 2018. 1864564X |
url |
http://www.repositorio.ufop.br/handle/123456789/9947 https://onlinelibrary.wiley.com/doi/epdf/10.1002/cssc.201701929 |
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eng |
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