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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: |
26/07/2023 |
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Data da última atualização: |
15/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
TEODORO, K. B. R.; FACURE, M. H. M.; SCHNEIDER, R.; ALVARENGA, A. D.; ANDRE, R. S.; CORREA, D. S. |
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Afiliação: |
DANIEL SOUZA CORREA, CNPDIA. |
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Título: |
Self-Standing Thin Films of Cellulose Nanocrystals and Graphene Quantum Dots for Detection of Trace Iron(III). |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
ACS Applied Nano Materials, v. 6, 2023. |
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Páginas: |
11561 - 11571 |
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DOI: |
https://doi.org/10.1021/acsanm.3c01584 |
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Idioma: |
Inglês |
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Conteúdo: |
Cellulose nanocrystal (CNC) thin films have gained attention for application in green optoelectronics devices. However, the dependence on plasticizers, external cross-linkers, or auxiliary polymers can impair the full exploration of the nanomaterials? properties. Herein, we report on the evaluation of a surface-oxidized CNCs ultrathin film, made from a formulation that excludes the use of auxiliary compounds, to be used as a sensing platform. The physicochemical characterizations using UV−vis, Fourier transform infrared , and Raman spectroscopies, nuclear magnetic resonance, zeta potential, transmission electron and field emission scanning electron microscopies, X-ray diffraction, thermogravimetric analysis, and contact angle measurement showed that the adopted procedure led to (i) the modification of the CNC surface and (ii) the formation of smaller CNCs. The production of casting films from highly diluted CNC-modified aqueous suspensions showed that a very thin, transparent, selfsupporting, and manipulable film could be obtained, which was not the case for diluted unmodified CNC suspension. Additionally, the CNC thin film has been demonstrated to be a suitable platform for hosting graphene quantum dots, based on which an optochemical sensor was successfully employed to detect iron(III) in a dynamic range from 1 fM to 2 pM, yielding a limit of detection of 0.8 fM. |
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Palavras-Chave: |
Acetalization; Metal detection; Optical sensors; Periodate oxidation. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02168naa a2200253 a 4500
001 2155319
005 2024-01-15
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1021/acsanm.3c01584$2DOI
100 1 $aTEODORO, K. B. R.
245 $aSelf-Standing Thin Films of Cellulose Nanocrystals and Graphene Quantum Dots for Detection of Trace Iron(III).$h[electronic resource]
260 $c2023
300 $a11561 - 11571
520 $aCellulose nanocrystal (CNC) thin films have gained attention for application in green optoelectronics devices. However, the dependence on plasticizers, external cross-linkers, or auxiliary polymers can impair the full exploration of the nanomaterials? properties. Herein, we report on the evaluation of a surface-oxidized CNCs ultrathin film, made from a formulation that excludes the use of auxiliary compounds, to be used as a sensing platform. The physicochemical characterizations using UV−vis, Fourier transform infrared , and Raman spectroscopies, nuclear magnetic resonance, zeta potential, transmission electron and field emission scanning electron microscopies, X-ray diffraction, thermogravimetric analysis, and contact angle measurement showed that the adopted procedure led to (i) the modification of the CNC surface and (ii) the formation of smaller CNCs. The production of casting films from highly diluted CNC-modified aqueous suspensions showed that a very thin, transparent, selfsupporting, and manipulable film could be obtained, which was not the case for diluted unmodified CNC suspension. Additionally, the CNC thin film has been demonstrated to be a suitable platform for hosting graphene quantum dots, based on which an optochemical sensor was successfully employed to detect iron(III) in a dynamic range from 1 fM to 2 pM, yielding a limit of detection of 0.8 fM.
653 $aAcetalization
653 $aMetal detection
653 $aOptical sensors
653 $aPeriodate oxidation
700 1 $aFACURE, M. H. M.
700 1 $aSCHNEIDER, R.
700 1 $aALVARENGA, A. D.
700 1 $aANDRE, R. S.
700 1 $aCORREA, D. S.
773 $tACS Applied Nano Materials$gv. 6, 2023.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Biblioteca |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
11/11/2021 |
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Data da última atualização: |
16/12/2021 |
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Autoria: |
REGITANO, L. C. de A.; OLIVEIRA, P. N. DE; ANDRADE, B. G. DE. |
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Afiliação: |
LUCIANA CORREIA DE ALMEIDA REGITANO, CPPSE; PRISCILA NEUBERN DE OLIVEIRA, FAPESP; BRUNO GABRIEL DE ANDRADE, FAPESP. |
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Título: |
Ruminant hologenome characterization of microorganism populations in ruminants digestive tract and their impact on the host s functional genome, performance, product quality and environmental impact. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
In: SOTTA, E. D.; SAMPAIO, F. G.; MARZALL, K.; SILVA, W . G. da. Adapting to climate change: strategies for brazilian agricultural and livestock system. Brasília, DF: MAPA, 2021. |
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Páginas: |
p.36-37. |
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ISBN: |
978-65-86803-61-7 |
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Idioma: |
Inglês |
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Conteúdo: |
The Hologenome is an evolutionary concept where both the host and its associated microorganisms (microbiota) form a cohesive biological entity known as holobiont, whose interaction a!ects the development and general fitness of the hologenome, considered an independent level of selection, In ruminants, microbial fermentation in the rumen produces methane as a by-product, a greenhouse gas with a high environmental impact. |
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Palavras-Chave: |
Eficiency in animals raised in confinement; MiRNA molecules regions of DNA; Ruminant hologenome; Ruminants digestive tract. |
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Thesagro: |
Gado Nelore. |
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Thesaurus NAL: |
Environmental impact. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/227675/1/RuminantHologenomeCharacterization.pdf
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Marc: |
LEADER 01433naa a2200241 a 4500
001 2136055
005 2021-12-16
008 2021 bl uuuu u00u1 u #d
020 $a978-65-86803-61-7
100 1 $aREGITANO, L. C. de A.
245 $aRuminant hologenome characterization of microorganism populations in ruminants digestive tract and their impact on the host s functional genome, performance, product quality and environmental impact.$h[electronic resource]
260 $c2021
300 $ap.36-37.
520 $aThe Hologenome is an evolutionary concept where both the host and its associated microorganisms (microbiota) form a cohesive biological entity known as holobiont, whose interaction a!ects the development and general fitness of the hologenome, considered an independent level of selection, In ruminants, microbial fermentation in the rumen produces methane as a by-product, a greenhouse gas with a high environmental impact.
650 $aEnvironmental impact
650 $aGado Nelore
653 $aEficiency in animals raised in confinement
653 $aMiRNA molecules regions of DNA
653 $aRuminant hologenome
653 $aRuminants digestive tract
700 1 $aOLIVEIRA, P. N. DE
700 1 $aANDRADE, B. G. DE
773 $tIn: SOTTA, E. D.; SAMPAIO, F. G.; MARZALL, K.; SILVA, W . G. da. Adapting to climate change: strategies for brazilian agricultural and livestock system. Brasília, DF: MAPA, 2021.
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