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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: |
LEADER 02695naa a2200289 a 4500
001 2157017
005 2023-10-02
008 2023 bl uuuu u00u1 u #d
022 $a0925-8388
024 7 $ahttps://doi.org/10.1016/j.jallcom.2023.172090$2DOI
100 1 $aSILVA, R. M. e
245 $aThe role of TiO2$bSnO2 heterojunction for partial oxidation of methane by photoelectrocatalytic process at room temperature.$h[electronic resource]
260 $c2023
300 $a7 p.
520 $ahane 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.
653 $aCH4 oxidation
653 $aMethane oxidation
653 $aPhotoelectrocatalysis
653 $aTiO2 SnO2 heterojunction
700 1 $aSOUZA, F. L.
700 1 $aDIAS, E.
700 1 $aSILVA, G. T. S. T. da
700 1 $aDÚRAN, F. E.
700 1 $aREGO, A.
700 1 $aHIGGINS, D.
700 1 $aRIBEIRO, C.
773 $tJournal of Alloys and Compounds$gv. 968, 172090, 2023.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Hortaliças. Para informações adicionais entre em contato com cnph.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Hortaliças. |
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Data corrente: |
06/10/2003 |
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Data da última atualização: |
06/10/2003 |
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Autoria: |
MAROUELLI, W. A.; MEDEIROS, J. F. de; SILVA, W. L. de C.; PINTO, J. M. |
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Título: |
Irrigação [Melão]. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Brasília, DF: In: SILVA, H. R. da; COSTA, N. D. (Ed.). Melão produção: aspectos técnicos. Brasília, DF, Embrapa Informação Tecnológica, 2003. |
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Páginas: |
p. 51-68 |
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Idioma: |
Português |
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Palavras-Chave: |
Necessidade de água. |
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Thesagro: |
Cucumis Melo; Irrigação por Aspersão; Irrigação por Gotejamento; Irrigação por Sulco; Manejo de Água; Melão; Qualidade da Água. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00785naa a2200253 a 4500
001 1774691
005 2003-10-06
008 2003 bl uuuu u00u1 u #d
100 1 $aMAROUELLI, W. A.
245 $aIrrigação [Melão].
260 $c2003
300 $ap. 51-68
650 $aCucumis Melo
650 $aIrrigação por Aspersão
650 $aIrrigação por Gotejamento
650 $aIrrigação por Sulco
650 $aManejo de Água
650 $aMelão
650 $aQualidade da Água
653 $aNecessidade de água
700 1 $aMEDEIROS, J. F. de
700 1 $aSILVA, W. L. de C.
700 1 $aPINTO, J. M.
773 $tBrasília, DF: In: SILVA, H. R. da; COSTA, N. D. (Ed.). Melão produção: aspectos técnicos. Brasília, DF, Embrapa Informação Tecnológica, 2003.
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