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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Hortaliças. |
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Data corrente: |
05/05/2008 |
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Data da última atualização: |
12/05/2008 |
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Autoria: |
DUARTE, H. da S. S.; ZAMBOLIM, L.; JESUS JÚNIOR, W. C. |
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Título: |
Manejo da requeima do tomateiro industrial empregando sistema de previsão. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Summa Phytopatholoica, Botucatu, v. 33, n. 4, p. 328-334, dez. 2007. |
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Idioma: |
Português |
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Palavras-Chave: |
Previsão; Tomate industrial. |
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Thesagro: |
Lycopersicon Esculentum; Requeima. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00547naa a2200181 a 4500
001 1781671
005 2008-05-12
008 2007 bl uuuu u00u1 u #d
100 1 $aDUARTE, H. da S. S.
245 $aManejo da requeima do tomateiro industrial empregando sistema de previsão.
260 $c2007
650 $aLycopersicon Esculentum
650 $aRequeima
653 $aPrevisão
653 $aTomate industrial
700 1 $aZAMBOLIM, L.
700 1 $aJESUS JÚNIOR, W. C.
773 $tSumma Phytopatholoica, Botucatu$gv. 33, n. 4, p. 328-334, dez. 2007.
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Embrapa Hortaliças (CNPH) |
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Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
24/03/2022 |
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Data da última atualização: |
24/03/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
TORRES, J. A.; CRUZ, J. C. da; NOGUEIRA, A. E.; SILVA, G. T. S. T. da; OLIVEIRA, J. de; RIBEIRO, C. |
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Afiliação: |
CAUE RIBEIRO DE OLIVEIRA, CNPDIA. |
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Título: |
Role of Cu0 -TiO2 interaction in catalyst stability in CO2 photoreduction process. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Journal of Environmental Chemical Engineering, v. 10, 107291, 2022. |
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ISSN: |
2213-3437 |
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DOI: |
https://doi.org/10.1016/j.jece.2022.107291 |
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Idioma: |
Inglês |
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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. |
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Palavras-Chave: |
Heterostructure; Selectivity; Stability. |
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Categoria do assunto: |
-- |
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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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