| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Instrumentação. |
|
Data corrente: |
16/05/2024 |
|
Data da última atualização: |
10/06/2024 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
NASCIMENTO, V. R. S.; TORRES, J. A.; IGA, G. D.; SANTOS, A. L. dos; EGUES, S. M.; FILHO, J. B. G.; FERREIRA, L. F. R.; RIBEIRO, C. |
|
Afiliação: |
TIRADENTES UNIVERSITY INSTITUTE OF TECHNOLOGY AND RESEARCH; FEDERAL UNIVERSITY OF SÃO CARLOS (UFSCAR); CHEMISTRY, FEDERAL UNIVERSITY OF SÃO CARLOS (UFSCAR); SÃO PAULO UNIVERSITY; INSTITUTE OF TECHNOLOGY AND RESEARCH TIRADENTES UNIVERSITY; PROGRAM IN GENOMIC SCIENCES AND BIOTECHNOLOGY, CATHOLIC UNIVERSITY OF BRASÍLIA; CAUE RIBEIRO DE OLIVEIRA, CNPDIA. |
|
Título: |
CO2 Photoreduction Product Selectivity with TiO2__Cu Nanocatalysts under Different Reaction Media. |
|
Ano de publicação: |
2024 |
|
Fonte/Imprenta: |
ChemCatChem, e202301612, 2024. |
|
Páginas: |
1 - 12 |
|
DOI: |
doi.org/10.1002/cctc.202301612 |
|
Idioma: |
Inglês |
|
Conteúdo: |
This study explores photocatalytic conversion of CO2 using TiO2__Cu heterojunctions with different Cu contents and investigates influence of different reaction media on the process efficiency. The use of KOH favored liquid products, especially ethanol. An analysis of H2 production as the main competitive reaction was done. Sodium oxalate led to an increase in H2 evolution by approximately 600 μmol g-1 compared to pure water, in the presence of CO2 in the reaction medium, but the blank test (without CO2) indicates a lower H2 yield (~136 μmol g-1), which suggests that the competitive reaction with CO2 also plays a role in H2 production. This role was related to the decrease of the initial pH from approximately 8.5 to 5.2, stabilizing at 5.5 at the end of the 6 h reaction. In an environment saturated with N2, the pH increases to 9 and stabilizes at 7.8 at the end of the process. In the presence of acetic acid, both CO and H2 production were suppressed, with a significant increase in the selectivity for methane via cleavage of the acid‘s carbon bond. The findings underscore the importance of optimizing reaction conditions to achieve higher yields of desired products in the photocatalytic conversion of .CO2. |
|
Palavras-Chave: |
Energy crisis; Energy derived from fossil fuels. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01977naa a2200253 a 4500
001 2164305
005 2024-06-10
008 2024 bl uuuu u00u1 u #d
024 7 $adoi.org/10.1002/cctc.202301612$2DOI
100 1 $aNASCIMENTO, V. R. S.
245 $aCO2 Photoreduction Product Selectivity with TiO2__Cu Nanocatalysts under Different Reaction Media.$h[electronic resource]
260 $c2024
300 $a1 - 12
520 $aThis study explores photocatalytic conversion of CO2 using TiO2__Cu heterojunctions with different Cu contents and investigates influence of different reaction media on the process efficiency. The use of KOH favored liquid products, especially ethanol. An analysis of H2 production as the main competitive reaction was done. Sodium oxalate led to an increase in H2 evolution by approximately 600 μmol g-1 compared to pure water, in the presence of CO2 in the reaction medium, but the blank test (without CO2) indicates a lower H2 yield (~136 μmol g-1), which suggests that the competitive reaction with CO2 also plays a role in H2 production. This role was related to the decrease of the initial pH from approximately 8.5 to 5.2, stabilizing at 5.5 at the end of the 6 h reaction. In an environment saturated with N2, the pH increases to 9 and stabilizes at 7.8 at the end of the process. In the presence of acetic acid, both CO and H2 production were suppressed, with a significant increase in the selectivity for methane via cleavage of the acid‘s carbon bond. The findings underscore the importance of optimizing reaction conditions to achieve higher yields of desired products in the photocatalytic conversion of .CO2.
653 $aEnergy crisis
653 $aEnergy derived from fossil fuels
700 1 $aTORRES, J. A.
700 1 $aIGA, G. D.
700 1 $aSANTOS, A. L. dos
700 1 $aEGUES, S. M.
700 1 $aFILHO, J. B. G.
700 1 $aFERREIRA, L. F. R.
700 1 $aRIBEIRO, C.
773 $tChemCatChem, e202301612, 2024.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Instrumentação (CNPDIA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Hortaliças. Para informações adicionais entre em contato com cnph.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Hortaliças. |
|
Data corrente: |
05/02/2024 |
|
Data da última atualização: |
05/02/2024 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 1 |
|
Autoria: |
NOVAES, D. R.; SUJII, P. S.; RODRIGUES, C. A.; SILVA, K. M. N. B.; MACHADO, A. F. P.; INOUE-NAGATA, A. K.; NAKASU, E. Y. T.; TOGNI, P. H. B. |
|
Afiliação: |
DANYELLE R. NOVAES, UNIVERSIDADE DE BRASÍLIA; PATRÍCIA S. SUJII, CENTRO DE ENSINO UNIFICADO DO DISTRITO FEDERAL; CAMILA A. RODRIGUES, UNIVERSIDADE DE BASÍLIA; KAREN M. N. B. SILVA, UNIVERSIDADE DE BRASÍLIA; AMANDA F. P. MACHADO, UNIVERSIDADE DE BRASÍLIA; ALICE KAZUKO INOUE NAGATA, CNPH; ERICH YUKIO TEMPEL NAKASU, CNPH; PEDRO H. B. TOGNI, UNIVERSIDADE DE BRASÍLIA. |
|
Título: |
Natural habitat connectivity and organic management modulate pest dispersal, gene flow, and natural enemy communities. |
|
Ano de publicação: |
2023 |
|
Fonte/Imprenta: |
Ecological Applications, 2023. |
|
DOI: |
10.1002/eap.2938 |
|
Idioma: |
Inglês |
|
Notas: |
e2938. |
|
Conteúdo: |
This study aimed to evaluate the effects of local and landscape factors, at multiple scales, on the local infestation, gene flow and broad dispersion dynamics of the pest insect Bemisia tabaci (Genn.) Middle East-Asia Minor 1 (MEAM-1, former biotype B) (Hemiptera: Aleyrodidae) and its associated natural enemies in a tropical agroecosystem. We evaluated the abundance of B. tabaci populations and their natural enemy community in 20 tomato farms in Brazil and the gene flow between farms from 2019 to 2021. |
|
Palavras-Chave: |
Agroecologia. |
|
Thesagro: |
Bemisia Tabaci; Cerrado. |
|
Thesaurus NAL: |
Agroecology; Biodiversity; Ecosystem services; Tritrophic interactions. |
|
Categoria do assunto: |
O Insetos e Entomologia |
|
Marc: |
LEADER 01411naa a2200313 a 4500
001 2161636
005 2024-02-05
008 2023 bl uuuu u00u1 u #d
024 7 $a10.1002/eap.2938$2DOI
100 1 $aNOVAES, D. R.
245 $aNatural habitat connectivity and organic management modulate pest dispersal, gene flow, and natural enemy communities.$h[electronic resource]
260 $c2023
500 $ae2938.
520 $aThis study aimed to evaluate the effects of local and landscape factors, at multiple scales, on the local infestation, gene flow and broad dispersion dynamics of the pest insect Bemisia tabaci (Genn.) Middle East-Asia Minor 1 (MEAM-1, former biotype B) (Hemiptera: Aleyrodidae) and its associated natural enemies in a tropical agroecosystem. We evaluated the abundance of B. tabaci populations and their natural enemy community in 20 tomato farms in Brazil and the gene flow between farms from 2019 to 2021.
650 $aAgroecology
650 $aBiodiversity
650 $aEcosystem services
650 $aTritrophic interactions
650 $aBemisia Tabaci
650 $aCerrado
653 $aAgroecologia
700 1 $aSUJII, P. S.
700 1 $aRODRIGUES, C. A.
700 1 $aSILVA, K. M. N. B.
700 1 $aMACHADO, A. F. P.
700 1 $aINOUE-NAGATA, A. K.
700 1 $aNAKASU, E. Y. T.
700 1 $aTOGNI, P. H. B.
773 $tEcological Applications, 2023.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Hortaliças (CNPH) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
