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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: |
27/11/2024 |
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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: |
KELCILENE B. R. TEODORO, UNIVERSIDADE FEDERAL DE SÃO CARLOS; MURILO H. M. FACURE, UNIVERSIDADE DE SÃO PAULO; RODRIGO SCHNEIDER, UNIVERSIDADE FEDERAL DE SÃO CARLOS; RAFAELA S. ANDRE, UNIVERSIDADE FEDERAL DE SÃO CARLOS; 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 2024-11-27
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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| 2. |  | CRUZ, C. D.; BOCKUS, W. W.; SANTANA, F. M.; PAUL, P. A.; KIYUNA, J.; GUZMAN, E.; TODD, T.; VALENT, B. Wheat blast: progress in elucidating its ecology and developing strategies for control. In: INTERNATIONAL SYMPOSIUM ON FUSARIUM HEAD BLIGHT, 5.; INTERNATIONAL WORKSHOP ON WHEAT BLAST, 2., 2016, Florianópolis. Book of abstracts... Passo Fundo: Ed. Universidade de Passo Fundo: Embrapa Trigo; Viçosa, MG: Universidade Federal de Viçosa, 2016. p. 133, abstr. K19. 2nd International Workshop on Wheat Blast.| Tipo: Resumo em Anais de Congresso |
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