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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
02/10/2023 |
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Data da última atualização: |
02/10/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, R. M. e; SOUZA, F. L.; DIAS, E.; SILVA, G. T. S. T. da; DÚRAN, F. E.; REGO, A.; HIGGINS, D.; RIBEIRO, C. |
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Afiliação: |
Department of Chemical Engineering, McMaster University, Hamilton, Ontario, Canada; Department of Chemistry and Molecular Physics, Institute of Chemistry of Sao Carlos, University of Sao Paulo, Brazil; Department of Chemistry and Molecular Physics, Institute of Chemistry of Sao Carlos, University of Sao Paulo, Brazil; Interdisciplinary Laboratory of Electrochemistry and Ceramics, Department of Chemistry, Federal University of Sao Carlos; Department of Fuel and Hydrogen Cells, Nuclear and Energy Research Institute; Department of Chemical Engineering, McMaster University, Hamilton, Ontario, Canada; Department of Chemical Engineering, McMaster University, Hamilton, Ontario, Canada; CAUE RIBEIRO DE OLIVEIRA, CNPDIA. |
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Título: |
The role of TiO2:SnO2 heterojunction for partial oxidation of methane by photoelectrocatalytic process at room temperature. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Journal of Alloys and Compounds, v. 968, 172090, 2023. |
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Páginas: |
7 p. |
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ISSN: |
0925-8388 |
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DOI: |
https://doi.org/10.1016/j.jallcom.2023.172090 |
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Idioma: |
Inglês |
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Conteúdo: |
hane into hydrocarbons using photoelectrochemical routes is attractive from a sustainability point of view owing to the possibility of using renewable energy (i.e., solar illumination) to activate this stable molecule. However, the process demands the development of novel catalysts that can promote methane activation and oxidation in a controlled manner to increase energy conversion efficiency. Herein, we demonstrated that semiconductor heterostructures improved charge separation compared to the individual materials alone. A more effortless transfer between bands favors the separation of the electron-hole (e− /h+) pairs generated by the photoelectrocatalytic system and prevents them from recombining. This process produces reactive oxygens, essential to driving methane oxidation conversion of the C?H bond cleavage. TiO2:SnO2 semiconductor heterojunction catalysts in film shape were investigated for methane oxidation via a photoelectrocatalytic process. The methane oxidation reactions were carried out in an inflow and sealed electrochemical system for 1 h. Liquid-state nuclear magnetic resonance revealed methanol and acetic acid as the main liquid products, where the TiO2:SnO2 heterojunction exhibited better performance with values of 30 and 8 µmol. cm− 2 .h− 1 , respectively. Compared to their materials alone, the superior performance of the TiO2:SnO2 heterojunction is attributed to the formation of heterostructure type II that enables a more effortless transfer between bands, facilitating the separation of the generated e− /h+ pairs under UV-Vis irradiation. The outcomes achieved here will motivate further studies for developing semiconductor heterojunction structure catalysts in photoelectrocatalysis to partially oxidize methane into valuable chemicals. Menoshane into hydrocarbons using photoelectrochemical routes is attractive from a sustainability point of view owing to the possibility of using renewable energy (i.e., solar illumination) to activate this stable molecule. However, the process demands the development of novel catalysts that can promote methane activation and oxidation in a controlled manner to increase energy conversion efficiency. Herein, we demonstrated that semiconductor heterostructures improved charge separation compared to the individual materials alone. A more effortless transfer between bands favors the separation of the electron-hole (e− /h+) pairs generated by the photoelectrocatalytic system and prevents them from recombining. This process produces reactive oxygens, essential to driving methane oxidation conversion of the C?H bond cleavage. TiO2:SnO2 semiconductor heterojunction catalysts in film shape were investigated for methane oxidation via a photoelectrocatalytic process. The methane oxidation reactions were carried out in an inflow and sealed electrochemical system for 1 h. Liquid-state nuclear magnetic resonance revealed methanol and acetic acid as the main liquid products, where the TiO2:SnO2 heterojunction exhibited better performance with values of 30 and 8 µmol. cm− 2 .h− 1 , respectively. Compared to their materials alone, the superior performance of the TiO2:SnO2 heterojunction is attributed to the formation of heterostructure type II that enables a more effortless tran... Mostrar Tudo |
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Palavras-Chave: |
CH4 oxidation; Methane oxidation; Photoelectrocatalysis; TiO2 SnO2 heterojunction. |
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Categoria do assunto: |
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Marc: |
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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| Registros recuperados : 23 | |
| 10. |  | PEREIRA, C. C.; RUFINO, J. M.; HABERT, A. C.; NÓBREGA, R. CABRAL, L. M. C.; BORGES, C. P. Membrane for processing tropical fruit juice. Desalination, Paris, v.148, p. 57-60, 2002.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 12. | | PEREIRA, C. C.; RUFINO, J. R. M.; HABERT, A. C.; NOBREGA, R.; CABRAL, L. M. C.; BORGES, C. P. Aroma recovery from tropical fruit juices by pervaporation. In: SIMPOSIO LATINO AMERICANO DE CIENCIA DE ALIMENTOS, 4., 2001, Campinas, SP. Livro de Resumos... 2001. p.127, ref. 0359-442.7.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 15. | | FERREIRA, W. P. M.; RUFINO, J. L. dos S.; RIBEIRO, M.; FERNANDES FILHO, E. I.; BARBOSA, T. K. M.; FERREIRA, G. R. O clima para a cafeicultura na região das Matas de Minas. CAMPO & NEGÓCIOS, n, 159, p. 74-75, 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 5 |
| Biblioteca(s): Embrapa Café. |
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| 17. | | SILVEIRA, A. de S.; PINHEIRO, A. C. T.; FERREIRA, W. P. M.; SILVA, L. J. da; RUFINO, J. L. dos S.; SAKIYAMA, N. S. Sensory analysis of specialty coffee from different environmental conditions in the region of Matas de Minas, Minas Gerais, Brazil. Revista Ceres, Viçosa, v.63, n.4, p. 436-443. jul/ago. 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Café. |
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| 18. | | FERREIRA, W. P. M.; FERREIRA, G. R.; BARBOSA, T. K. M.; RIBEIRO, M. F.; FERNANDO FILHO, E. I.; RUFINO, J. L. Região das Matas de Minas tem clima ideal para produção de café. Cafeicultura, v.14, n. 16, p. 10-13, 2016.| Tipo: Artigo de Divulgação na Mídia |
| Biblioteca(s): Embrapa Café. |
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| 19. | | MARTORANO, L. G.; GARCIA, A. R.; SILVA, L. K. X.; AMARAL JÚNIOR, J. M. DO; BARROS, D. V.; RUFINO, J. P. F.; ROCHA, S. L. C. S.; FERNANDES, P. C. C.; OLIVEIRA, P. P. A. Infrared thermography to diagnose bioclimatic conditions in livestock systems in the amazon biome. In: SOTTA, E. D.; SAMPAIO, F. G.; MARZALL, K.; SILVA, W . G. da (ed.). Adapting to climate change: strategies for Brazilian agricultural and livestock systems. Brasília, DF: MAPA, 2021. p.104-105.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Amazônia Oriental; Embrapa Cerrados; Embrapa Pecuária Sudeste. |
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| 20. | | FERREIRA, W. P. M.; RUFINO, J. L. dos S.; FONSECA, H. P.; QUEIROZ, D. M. de; FERNANDES FILHO, E. I.; RIBEIRO, M. de F.; FERREIRA, C. de F. S. Mapping the mountainous climate in the Matas de Minas region, Brazil which influences the top-quality coffee beverages. Research, Society and Development, v. 11, n. 12, e261111233776, 2022. 14 p. Título em português: Mapeamento do clima de montanha na região de Matas de Minas, Brasil que influenciam a alta qualidade das bebidas do café.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
| Biblioteca(s): Embrapa Café. |
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| Registros recuperados : 23 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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