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| Registros recuperados : 15 | |
| 1. |  | RIBEIRO, T. S.; MIRANDA, M. M. P.; SCRAMIN, J.; FORATO, L. A. Análise da conformação de proteínas de reserva do sorgo sacarino por RMN de 13C no estado sólido. In: JORNADA CIENTÍFICA - EMBRAPA SÃO CARLOS, 4., 2012, São Carlos, SP. Anais... São Carlos: Embrapa Instrumentação: Embrapa Pecuária Sudeste, 2012. p. 141. Editores técnicos: João de Mendonça Naime, Lucimara Aparecida Forato, Maria Alice Martins, Ladislau Marcelino Rabello, Rubens Bernardes Filho. (Embrapa Instrumentação. Documentos, 56)| Biblioteca(s): Embrapa Instrumentação. |
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| 4. | | BIANQUINI, T. S.; FLORENCIO, C.; FARINAS, C. S.; RIBEIRO, T. S. Studies of enzymatic hydrolysis of sugarcane bagasse pre-treated by steam explosion. In: WORLD CHEMISTRY CONGRESS, 46; REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE QUÍMICA, 40; GENERAL ASSEMBLY IUPAC, 49., 2017, São Paulo. Sustainability & Diversity through chemistry: technical papers. São Paulo: Sociedade Brasileira de Química, 2017. Não paginado.| Biblioteca(s): Embrapa Instrumentação. |
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| 6. | | MIRANDA, M. M. P.; SCRAMIN, J.; RIBEIRO, T. S.; RODRIGUES, J. A. S.; BERNARDES FILHO, R.; FORATO, L. A. Análise da conformação de proteínas de reserva do sorgo sacarino por RMN de 13C no estado sólido. In: WORKSHOP DA REDE DE NANOTECNOLOGIA APLICADA AO AGRONEGÓCIO, 7.; ESCOLA DE NANOTECNOLOGIA, 3., 2013, São Carlos, SP. Anais... São Carlos, SP: Embrapa Instrumentação, 2013. p. 121-123 Editores: Maria Alice Martins, Odílio Benedito Garrido de Assis, Caue Ribeiro, Luiz Henrique Capparelli Mattoso. CD-ROM. Editores: Maria Alice Martins, Odílio Benedito Garrido de Assis, Caue Ribeiro, Luiz Henrique Capparelli Mattoso.| Biblioteca(s): Embrapa Instrumentação. |
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| 7. | | RIBEIRO, T. S.; SCRAMIN, J. A.; RODRIGUES, J. A. S.; BERNARDES FILHO, R.; COLNAGO, L. A.; FORATO, L. A. 13C ss-NMR Singular value decomposition and fitting for sorghum proteins conformation elucidation. Polímeros, v. 32, n. 1, e2022009, 2022. 6 p.| Biblioteca(s): Embrapa Instrumentação. |
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| 8. | | BIANQUINI, T. S.; ROCHA, I. A.; GARCIA, R.; FARINAS, C. S.; COLNAGO, L. A.; RIBEIRO, T. S. Estudo de Porosidade da Celulose do Bagaço de Cana-de-Açúcar pré-tratados por Hidrólise Ácida e Processo Hidrotérmico usando RMN-DT. In: JORNADA BRASILEIRA DE RESSONÂNCIA MAGNÉTICA, 14., 2016, Vitória. Mini-Cursos em RMN: resumos. [Rio de Janeiro]: AUREMN, 2016. p. 60-61.| Biblioteca(s): Embrapa Instrumentação. |
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| 9. | | GIROTO, A. S.; CAMPOS, A. de; PEREIRA, E. I.; RIBEIRO, T. S.; MARCONCINI, J. M.; OLIVEIRA, C. R. de. Photoprotective effect of starch/montmorillonite composites on ultraviolet-induced degradation of herbicides. Reactive and Functional Polymers, [S. l.], v. 93, p. 156-162, 2015.| Biblioteca(s): Embrapa Instrumentação. |
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| 10. | | RIBEIRO, T. S.; MARQUES, M. R. H.; PEREIRA, F. M. V.; SCRAMIN, J.; CORREA, T. R. A.; COLNAGO, L. A.; BERNARDES FILHO, R.; FORATO, L. A. Aplicação da ressonância magnética nuclear no domínio do tempo e análise exploratória de peras revestidas com filmes a base de zeínas In: WORKSHOP DA REDE DE NANOTECNOLOGIA APLICADA AO AGRONEGÓCIO, 6., 2012, Fortaleza. Anais... São Carlos: Embrapa Instrumentação; Fortaleza: Embrapa Agroindústria Tropical, 2012. p. 105-107. Editores: Maria Alice Martins, MOrsyleide de Freitas Rosa, Men de Sá Moreira de Souza Filho, Nicodemos Moreira dos Santos Junior, Odílio Benedito Garrido de Assis, Caue Ribeiro, Luiz Henrique Capparelli Mattoso.| Biblioteca(s): Embrapa Instrumentação. |
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| 11. | | GIROTO, A. S.; VALLE, S. F.; BORGES, R.; COLNAGO, L. A.; RIBEIRO, T. S.; JABLONOWSKI N. D.; RIBEIRO, C.; MATTOSO, L. H. C. Revealing the Structure Formation on Polyglycerol Citrate Polymers - An Environmentally Friendly Polyester as a Seed-Coating Material. Polymers, v. 15, 4303, 2023. 16 p.| Biblioteca(s): Embrapa Instrumentação. |
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| 12. | | BIANQUINI, T. S.; FLORENCIO, C.; GARCIA, R. H. S.; COLNAGO, L. A.; CECCATO-ANTONINI, S. R.; CARMO, M.; TELES, J.; FARINAS, C. S.; RIBEIRO, T. S. Time domain NMR spectroscopy as a fast method for probing the efficiency of biomass pretreatments for second generation ethanol production. Biomass and Bioenergy, v. 142, a. 105734, 2020.| Biblioteca(s): Embrapa Instrumentação. |
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| 13. | | ROLIM, F. R. L.; SANTOS, K. M. O. dos; BARCELOS, S. C. de; RIBEIRO, T. S.; CONCEIÇÃO, M. L. da; OLIVEIRA, M. E. G. de; MAGNANI, M.; QUEIROGA, R. de C. R. do E. Avaliação in vitro do potencial probiótico de queijo coalho caprino adicionado de Lactobacillus rhamnosus. In: CONGRESSO LATINO AMERICANO DE MICROBIOLOGIA E HIGIENE DE ALIMENTOS, 12.; IAFP's LATIN AMERICAN SYMPOSIUM ON FOOD SAFETY; SIMPÓSIO INTERNACIONAL ABRAPA DE SEGURANÇA DE ALIMENTOS, 13.; SYMPOSIUM OF THE INTERNATIONAL COMMISSION ON FOOD MYCOLOGY, 2014, Foz do Iguaçu. Proceedings ... São Paulo: Blucher, 2014. p. 431-432.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 14. | | ROLIM, F. R. L.; SANTOS, K. M. O. dos; BARCELOS, S. C. de; EGITO, A. S. do; RIBEIRO, T. S.; CONCEIÇÃO, M. L. da; MAGNANI, M.; OLIVEIRA, M. E. G. de; QUEIROGA, R. de C. R. do E. Survival of Lactobacillus rhamnosus EM1107 in simulated gastrointestinal conditions and its inhibitory effect against pathogenic bacteria in semi-hard goat cheese. LWT - Food Science and Technology, v. 63, n. 2, p. 807-813, Oct. 2015.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 15. | | SILVA, P. F. da; RIBEIRO, T. S.; GOMES, B. F.; SILVA, G. T. S. T. da; LOBO, C. M. S.; CARMO, M.; OLIVEIRA, C. R. de; BERNARDES FILHO, R.; ROTH, C.; COLNAGO, L. A. Miniaturized carbon fiber paper electrodes for In situ high resolution NMR analyses. Analalytical Chemistry, v. 94, 2022. 15223–15230| Biblioteca(s): Embrapa Instrumentação. |
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| Registros recuperados : 15 | |
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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. |
Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
23/11/2022 |
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Data da última atualização: |
23/01/2024 |
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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: |
SILVA, P. F. da; RIBEIRO, T. S.; GOMES, B. F.; SILVA, G. T. S. T. da; LOBO, C. M. S.; CARMO, M.; OLIVEIRA, C. R. de; BERNARDES FILHO, R.; ROTH, C.; COLNAGO, L. A. |
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Afiliação: |
CAUE RIBEIRO DE OLIVEIRA, CNPDIA; RUBENS BERNARDES FILHO, CNPDIA; LUIZ ALBERTO COLNAGO, CNPDIA. |
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Título: |
Miniaturized carbon fiber paper electrodes for In situ high resolution NMR analyses. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Analalytical Chemistry, v. 94, 2022. |
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Páginas: |
15223–15230 |
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DOI: |
https://doi.org/10.1021/acs.analchem.2c02058 |
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Idioma: |
Inglês |
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Conteúdo: |
Combining spectroscopic techniques with electrochemistry is a promising strategy, as it allows the detailed investigation of the species that are consumed and produced by the reaction in real time. However, as with any in situ coupling technique, the junction between NMR and electrochemistry presents some challenges, notably the distortion of NMR signals due to the placement of electrodes close to or within the detection region. In this work, miniaturized electrodes made of carbon fiber paper were developed and later modified with platinum. Platinum decoration by cathodic deposition was chosen, as platinum is a prominent element in electrocatalysis, able to catalyze a large variety of reactions. To evaluate the efficiency of this electrochemical system, the oxidation of ascorbic acid was used as amodel reaction. It was observed that the electrodes caused substantial signal distortion when placed within the detection region (full width at half-maximum equal to 1.46 Hz), whereas no distortion was observed when the electrodes were placed 1 mm above the detection region (full width at half-maximum equal to 0.95 Hz). With this system, it was also possible to monitor the magnetoelectrolysis effect, caused by the interaction of the magnetic field with the flowing ions, leading to a doubling of the ascorbic acid oxidation rate, compared to the reaction performed without a magnetic field. In addition to its low cost and simplicity in preparation, the developed electrode system allows the electrode surface to be easily modified with other suitable catalysts. MenosCombining spectroscopic techniques with electrochemistry is a promising strategy, as it allows the detailed investigation of the species that are consumed and produced by the reaction in real time. However, as with any in situ coupling technique, the junction between NMR and electrochemistry presents some challenges, notably the distortion of NMR signals due to the placement of electrodes close to or within the detection region. In this work, miniaturized electrodes made of carbon fiber paper were developed and later modified with platinum. Platinum decoration by cathodic deposition was chosen, as platinum is a prominent element in electrocatalysis, able to catalyze a large variety of reactions. To evaluate the efficiency of this electrochemical system, the oxidation of ascorbic acid was used as amodel reaction. It was observed that the electrodes caused substantial signal distortion when placed within the detection region (full width at half-maximum equal to 1.46 Hz), whereas no distortion was observed when the electrodes were placed 1 mm above the detection region (full width at half-maximum equal to 0.95 Hz). With this system, it was also possible to monitor the magnetoelectrolysis effect, caused by the interaction of the magnetic field with the flowing ions, leading to a doubling of the ascorbic acid oxidation rate, compared to the reaction performed without a magnetic field. In addition to its low cost and simplicity in preparation, the developed electrode system allows... Mostrar Tudo |
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Palavras-Chave: |
Magnetoelectrolysis effect; NMR. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02384naa a2200277 a 4500
001 2148653
005 2024-01-23
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1021/acs.analchem.2c02058$2DOI
100 1 $aSILVA, P. F. da
245 $aMiniaturized carbon fiber paper electrodes for In situ high resolution NMR analyses.$h[electronic resource]
260 $c2022
300 $a15223–15230
520 $aCombining spectroscopic techniques with electrochemistry is a promising strategy, as it allows the detailed investigation of the species that are consumed and produced by the reaction in real time. However, as with any in situ coupling technique, the junction between NMR and electrochemistry presents some challenges, notably the distortion of NMR signals due to the placement of electrodes close to or within the detection region. In this work, miniaturized electrodes made of carbon fiber paper were developed and later modified with platinum. Platinum decoration by cathodic deposition was chosen, as platinum is a prominent element in electrocatalysis, able to catalyze a large variety of reactions. To evaluate the efficiency of this electrochemical system, the oxidation of ascorbic acid was used as amodel reaction. It was observed that the electrodes caused substantial signal distortion when placed within the detection region (full width at half-maximum equal to 1.46 Hz), whereas no distortion was observed when the electrodes were placed 1 mm above the detection region (full width at half-maximum equal to 0.95 Hz). With this system, it was also possible to monitor the magnetoelectrolysis effect, caused by the interaction of the magnetic field with the flowing ions, leading to a doubling of the ascorbic acid oxidation rate, compared to the reaction performed without a magnetic field. In addition to its low cost and simplicity in preparation, the developed electrode system allows the electrode surface to be easily modified with other suitable catalysts.
653 $aMagnetoelectrolysis effect
653 $aNMR
700 1 $aRIBEIRO, T. S.
700 1 $aGOMES, B. F.
700 1 $aSILVA, G. T. S. T. da
700 1 $aLOBO, C. M. S.
700 1 $aCARMO, M.
700 1 $aOLIVEIRA, C. R. de
700 1 $aBERNARDES FILHO, R.
700 1 $aROTH, C.
700 1 $aCOLNAGO, L. A.
773 $tAnalalytical Chemistry$gv. 94, 2022.
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