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3D-printed reduced graphene oxide/polylactic acid electrodes: A new prototyped platform for sensing and biosensing applications.
Silva, Vinicius A O P; Fernandes-Junior, Wilson S; Rocha, Diego P; Stefano, Jéssica S; Munoz, Rodrigo A A; Bonacin, Juliano A; Janegitz, Bruno C.
Afiliação
  • Silva VAOP; Department of Nature Sciences, Mathematics and Education, Federal University of São Carlos, 13600-970, Araras, São Paulo, Brazil.
  • Fernandes-Junior WS; Department of Nature Sciences, Mathematics and Education, Federal University of São Carlos, 13600-970, Araras, São Paulo, Brazil.
  • Rocha DP; Institute of Chemistry, Federal University of Uberlândia, 38400-902, Uberlândia, MG, Brazil.
  • Stefano JS; Institute of Chemistry, Federal University of Uberlândia, 38400-902, Uberlândia, MG, Brazil.
  • Munoz RAA; Institute of Chemistry, Federal University of Uberlândia, 38400-902, Uberlândia, MG, Brazil.
  • Bonacin JA; Institute of Chemistry, University of Campinas, P.O. Box 6154, 13083-970, Campinas, SP, Brazil.
  • Janegitz BC; Department of Nature Sciences, Mathematics and Education, Federal University of São Carlos, 13600-970, Araras, São Paulo, Brazil. Electronic address: brunocj@ufscar.br.
Biosens Bioelectron ; 170: 112684, 2020 Dec 15.
Article em En | MEDLINE | ID: mdl-33049481
This work presents a novel procedure involving the sequential chemical treatment to generate reduced graphene oxide (rGO) within 3D-printed polylactic acid (PLA) electrodes and their potential applications for sensing and biosensing. A new configuration of a compact all-3D-printed electrochemical device containing the three electrodes is presented, in which the working electrode was treated to generate rGO within PLA (rGO-PLA) after treatment within NaBH4. The rGO-PLA electrodes presented a notable current increase for the redox probe ferrocene-methanol in comparison with the same surface treated by dimethylformamide immersion. Also, the electrochemical impedance spectroscopic data that presented the lowest resistance to electron transfer for the proposed electrode. The electrochemical experiments were in accordance with Raman spectra and surface roughness obtained by atomic force microscopy images. As proofs-of-concept, the rGO-PLA electrode was applied for serotonin determination in synthetic urine using differential-pulse voltammetry with a limit of detection of 0.032 µmol L-1. Also, the second application involved the fabrication of a tyrosinase-based biosensor capable of determining catechol in natural water samples with a limit of detection of 0.26 µmol L-1. Based on both applications, the 3D-printed rGO-PLA showed to be an excellent platform for sensing and biosensing purposes.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Técnicas Biossensoriais / Grafite Idioma: En Revista: Biosens Bioelectron Assunto da revista: BIOTECNOLOGIA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Técnicas Biossensoriais / Grafite Idioma: En Revista: Biosens Bioelectron Assunto da revista: BIOTECNOLOGIA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido