Connecting theory with experiment to understand the photocatalytic activity of CuO–ZnO heterostructure
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/handle/123456789/40848 |
Resumo: | Semiconductor based photocatalysis attracts wide attention because of its ability to directly utilize solar energy to degrade pollutants and convert energy, with heterojunction photocatalysts being good candidates for superior activity due to the spatial separation of photogenerated electron–hole pairs. Herein, CuO/ZnO heterostructures were successfully synthesized by a microwave-assisted hydrothermal method, with the structure, electronic and photocatalytic properties analyzed by means of experimental and theoretical methods. The X-ray diffraction patterns revealed that a CuO/ZnO heterostructure was formed, while FE-SEM analysis indicates the role of different morphologies for CuO, ZnO and CuO/ZnO heterostructures. The solar-driven photocatalytic mea-surements combined with DFT calculations indicate that CuO, as a p-type and narrow band-gap sensitizer, can make the n-type ZnO respond to visible light and promote the separation of photogenerated charge carriers by building a p-n heterogeneous structure. As a result, the CuO/ZnO heterostructure shows good promise for solar-driven photodegradation |
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Oliveira, Marisa Carvalho deFonseca, V. S.Andrade Neto, Nivaldo Ferreira daRibeiro, Renan Augusto PontesSilva, Elson Longo daLazaro, Sérgio Ricardo deMotta, Fabiana Villela daDelmonte, Maurício Roberto Bomio2021-09-30T12:41:09Z2021-09-30T12:41:09Z2020-05OLIVEIRA, M.C.; FONSECA, V.S.; ANDRADE NETO, N.F.; RIBEIRO, R.A.P.; LONGO, E.; LAZARO, S.R. de; MOTTA, F.V.; BOMIO, M.R.D.. Connecting theory with experiment to understand the photocatalytic activity of CuO–ZnO heterostructure. Ceramics International, [S.L.], v. 46, n. 7, p. 9446-9454, maio 2020. Disponível em: https://www.sciencedirect.com/science/article/pii/S0272884219337071?via%3Dihub. Acesso em: 20 abr. 2021. http://dx.doi.org/10.1016/j.ceramint.2019.12.205.0272-8842https://repositorio.ufrn.br/handle/123456789/4084810.1016/j.ceramint.2019.12.205Elseviern-ZnO/p-CuO heterostructureDFTPhotocatalysisMethylene blue dyeConnecting theory with experiment to understand the photocatalytic activity of CuO–ZnO heterostructureinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleSemiconductor based photocatalysis attracts wide attention because of its ability to directly utilize solar energy to degrade pollutants and convert energy, with heterojunction photocatalysts being good candidates for superior activity due to the spatial separation of photogenerated electron–hole pairs. Herein, CuO/ZnO heterostructures were successfully synthesized by a microwave-assisted hydrothermal method, with the structure, electronic and photocatalytic properties analyzed by means of experimental and theoretical methods. The X-ray diffraction patterns revealed that a CuO/ZnO heterostructure was formed, while FE-SEM analysis indicates the role of different morphologies for CuO, ZnO and CuO/ZnO heterostructures. The solar-driven photocatalytic mea-surements combined with DFT calculations indicate that CuO, as a p-type and narrow band-gap sensitizer, can make the n-type ZnO respond to visible light and promote the separation of photogenerated charge carriers by building a p-n heterogeneous structure. As a result, the CuO/ZnO heterostructure shows good promise for solar-driven photodegradationengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNinfo:eu-repo/semantics/openAccessCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8914https://repositorio.ufrn.br/bitstream/123456789/40848/2/license_rdf4d2950bda3d176f570a9f8b328dfbbefMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/40848/3/license.txte9597aa2854d128fd968be5edc8a28d9MD53123456789/408482023-01-31 18:54:31.126oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2023-01-31T21:54:31Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.pt_BR.fl_str_mv |
Connecting theory with experiment to understand the photocatalytic activity of CuO–ZnO heterostructure |
title |
Connecting theory with experiment to understand the photocatalytic activity of CuO–ZnO heterostructure |
spellingShingle |
Connecting theory with experiment to understand the photocatalytic activity of CuO–ZnO heterostructure Oliveira, Marisa Carvalho de n-ZnO/p-CuO heterostructure DFT Photocatalysis Methylene blue dye |
title_short |
Connecting theory with experiment to understand the photocatalytic activity of CuO–ZnO heterostructure |
title_full |
Connecting theory with experiment to understand the photocatalytic activity of CuO–ZnO heterostructure |
title_fullStr |
Connecting theory with experiment to understand the photocatalytic activity of CuO–ZnO heterostructure |
title_full_unstemmed |
Connecting theory with experiment to understand the photocatalytic activity of CuO–ZnO heterostructure |
title_sort |
Connecting theory with experiment to understand the photocatalytic activity of CuO–ZnO heterostructure |
author |
Oliveira, Marisa Carvalho de |
author_facet |
Oliveira, Marisa Carvalho de Fonseca, V. S. Andrade Neto, Nivaldo Ferreira da Ribeiro, Renan Augusto Pontes Silva, Elson Longo da Lazaro, Sérgio Ricardo de Motta, Fabiana Villela da Delmonte, Maurício Roberto Bomio |
author_role |
author |
author2 |
Fonseca, V. S. Andrade Neto, Nivaldo Ferreira da Ribeiro, Renan Augusto Pontes Silva, Elson Longo da Lazaro, Sérgio Ricardo de Motta, Fabiana Villela da Delmonte, Maurício Roberto Bomio |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Oliveira, Marisa Carvalho de Fonseca, V. S. Andrade Neto, Nivaldo Ferreira da Ribeiro, Renan Augusto Pontes Silva, Elson Longo da Lazaro, Sérgio Ricardo de Motta, Fabiana Villela da Delmonte, Maurício Roberto Bomio |
dc.subject.por.fl_str_mv |
n-ZnO/p-CuO heterostructure DFT Photocatalysis Methylene blue dye |
topic |
n-ZnO/p-CuO heterostructure DFT Photocatalysis Methylene blue dye |
description |
Semiconductor based photocatalysis attracts wide attention because of its ability to directly utilize solar energy to degrade pollutants and convert energy, with heterojunction photocatalysts being good candidates for superior activity due to the spatial separation of photogenerated electron–hole pairs. Herein, CuO/ZnO heterostructures were successfully synthesized by a microwave-assisted hydrothermal method, with the structure, electronic and photocatalytic properties analyzed by means of experimental and theoretical methods. The X-ray diffraction patterns revealed that a CuO/ZnO heterostructure was formed, while FE-SEM analysis indicates the role of different morphologies for CuO, ZnO and CuO/ZnO heterostructures. The solar-driven photocatalytic mea-surements combined with DFT calculations indicate that CuO, as a p-type and narrow band-gap sensitizer, can make the n-type ZnO respond to visible light and promote the separation of photogenerated charge carriers by building a p-n heterogeneous structure. As a result, the CuO/ZnO heterostructure shows good promise for solar-driven photodegradation |
publishDate |
2020 |
dc.date.issued.fl_str_mv |
2020-05 |
dc.date.accessioned.fl_str_mv |
2021-09-30T12:41:09Z |
dc.date.available.fl_str_mv |
2021-09-30T12:41:09Z |
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 |
OLIVEIRA, M.C.; FONSECA, V.S.; ANDRADE NETO, N.F.; RIBEIRO, R.A.P.; LONGO, E.; LAZARO, S.R. de; MOTTA, F.V.; BOMIO, M.R.D.. Connecting theory with experiment to understand the photocatalytic activity of CuO–ZnO heterostructure. Ceramics International, [S.L.], v. 46, n. 7, p. 9446-9454, maio 2020. Disponível em: https://www.sciencedirect.com/science/article/pii/S0272884219337071?via%3Dihub. Acesso em: 20 abr. 2021. http://dx.doi.org/10.1016/j.ceramint.2019.12.205. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/handle/123456789/40848 |
dc.identifier.issn.none.fl_str_mv |
0272-8842 |
dc.identifier.doi.none.fl_str_mv |
10.1016/j.ceramint.2019.12.205 |
identifier_str_mv |
OLIVEIRA, M.C.; FONSECA, V.S.; ANDRADE NETO, N.F.; RIBEIRO, R.A.P.; LONGO, E.; LAZARO, S.R. de; MOTTA, F.V.; BOMIO, M.R.D.. Connecting theory with experiment to understand the photocatalytic activity of CuO–ZnO heterostructure. Ceramics International, [S.L.], v. 46, n. 7, p. 9446-9454, maio 2020. Disponível em: https://www.sciencedirect.com/science/article/pii/S0272884219337071?via%3Dihub. Acesso em: 20 abr. 2021. http://dx.doi.org/10.1016/j.ceramint.2019.12.205. 0272-8842 10.1016/j.ceramint.2019.12.205 |
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https://repositorio.ufrn.br/handle/123456789/40848 |
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