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Registro Completo |
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
24/03/2022 |
Data da última atualização: |
24/03/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
TORRES, J. A.; CRUZ, J. C. da; NOGUEIRA, A. E.; SILVA, G. T. S. T. da; OLIVEIRA, J. de; RIBEIRO, C. |
Afiliação: |
CAUE RIBEIRO DE OLIVEIRA, CNPDIA. |
Título: |
Role of Cu0 -TiO2 interaction in catalyst stability in CO2 photoreduction process. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Journal of Environmental Chemical Engineering, v. 10, 107291, 2022. |
ISSN: |
2213-3437 |
DOI: |
https://doi.org/10.1016/j.jece.2022.107291 |
Idioma: |
Inglês |
Conteúdo: |
The application of copper-based semiconductors for CO2 photoreduction has been limited by the poor stability of these catalysts in aqueous solutions due to parallel oxidation reactions. Thus, here we discussed the role of the Cu0 -TiO2 interaction in catalyst stability, where the semiconductor acts as a charge separator and support for Cu0 . Cu0 nanoparticles were deposited on the surface of TiO2 by reducing copper nitrate using a sodium borohydride solution. The metallic copper presents a higher selectivity in CO production (82.32%), while pure iO2 presents a selectivity for CH4 (62.44%). However, with the heterostructure formation, the photocatalysts activity increases and the selectivity changes with copper amount variation over TiO2. In addition to the obtained C1 products (CH4, CO, and CH3OH), products containing two or more carbons (C2+) were also generated, such as acetic acid (C2H4O2), acetone (C3H6O), and isopropanol (C3H8O). H2 was also produced, although the selectivity for products derived from the photoreduction of CO2 was significantly greater. The sample TiO2/Cu 30% was significantly stable, which indicated the importance of an adequate heterojunction in the catalyst activity. These results demonstrate the synergistic effect between different copper species over TiO2, in which both materials play a role in the catalytic event. |
Palavras-Chave: |
Heterostructure; Selectivity; Stability. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02096naa a2200241 a 4500 001 2141233 005 2022-03-24 008 2022 bl uuuu u00u1 u #d 022 $a2213-3437 024 7 $ahttps://doi.org/10.1016/j.jece.2022.107291$2DOI 100 1 $aTORRES, J. A. 245 $aRole of Cu0 -TiO2 interaction in catalyst stability in CO2 photoreduction process.$h[electronic resource] 260 $c2022 520 $aThe application of copper-based semiconductors for CO2 photoreduction has been limited by the poor stability of these catalysts in aqueous solutions due to parallel oxidation reactions. Thus, here we discussed the role of the Cu0 -TiO2 interaction in catalyst stability, where the semiconductor acts as a charge separator and support for Cu0 . Cu0 nanoparticles were deposited on the surface of TiO2 by reducing copper nitrate using a sodium borohydride solution. The metallic copper presents a higher selectivity in CO production (82.32%), while pure iO2 presents a selectivity for CH4 (62.44%). However, with the heterostructure formation, the photocatalysts activity increases and the selectivity changes with copper amount variation over TiO2. In addition to the obtained C1 products (CH4, CO, and CH3OH), products containing two or more carbons (C2+) were also generated, such as acetic acid (C2H4O2), acetone (C3H6O), and isopropanol (C3H8O). H2 was also produced, although the selectivity for products derived from the photoreduction of CO2 was significantly greater. The sample TiO2/Cu 30% was significantly stable, which indicated the importance of an adequate heterojunction in the catalyst activity. These results demonstrate the synergistic effect between different copper species over TiO2, in which both materials play a role in the catalytic event. 653 $aHeterostructure 653 $aSelectivity 653 $aStability 700 1 $aCRUZ, J. C. da 700 1 $aNOGUEIRA, A. E. 700 1 $aSILVA, G. T. S. T. da 700 1 $aOLIVEIRA, J. de 700 1 $aRIBEIRO, C. 773 $tJournal of Environmental Chemical Engineering$gv. 10, 107291, 2022.
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Registros recuperados : 522 | |
3. | | CRUZ, J. C. Cultivares de milho para silagem. In: CONGRESSO NACIONAL DE ESTUDANTES DE ZOOTECNIA, 1998, Viçosa, MG. Anais... Viçosa: Associação Mineira dos Estudantes de Zootecnia, 1998. p. 92-114.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Milho e Sorgo. |
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4. | | CRUZ, J. C. (ed.). Cultivo do milho. 6. ed. Sete Lagoas: Embrapa Milho e Sorgo, 2010. (Embrapa Milho e Sorgo. Sistema de produção, 1).Tipo: Sistema de Produção |
Biblioteca(s): Embrapa Milho e Sorgo. |
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10. | | CRUZ, J. C. Milho novo. Cultivar Grandes Culturas, Pelotas, v. 5, n. 55, p. 10, out. 2003.Biblioteca(s): Embrapa Milho e Sorgo. |
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13. | | CRUZ, J. C. da. PHOTOCATALYTIC CONTROLLED OXIDATION REACTION OF METHANE. 2023. Tese ( Doutorado em Ciências, área de concentração: físico-química), Universidade Federal de São Carlos, Programa de Pós-Graduação em Química, São Carlos-SP. 98 p. Orientador: Caue Ribeiro de Oliveira
Coorientadora: Elaine Cristina ParisTipo: Orientação de Tese de Pós-Graduação |
Biblioteca(s): Embrapa Instrumentação. |
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14. | | CRUZ, J. C. Situação da pesquisa do milho no Brasil. In: EMBRAPA. Centro de Nacional de Pesquisa de Milho e Sorgo. Relatório técnico anual do Centro Nacional de Pesquisa de Milho e Sorgo 1980-84. Sete Lagoas, 1986. p. 17-19.Biblioteca(s): Embrapa Milho e Sorgo. |
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Registros recuperados : 522 | |
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