Disposable electrode obtained by pencil drawing on corrugated fiberboard substrate

Autor(es)

Orzari, Luiz Otavio ^[1] ; de Araujo Andreotti, Isabela Aparecida ^{[1, 2]} ; Bergamini, Marcio Fernando ^[3] ; Marcolino Junior, Luiz Humberto ^[3] ; Janegitz, Bruno Campos ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Dept Nat Sci Math & Educ, BR-13600970 Araras, SP - Brazil

^[2] Univ Fed Sao Carlos, Ctr Exact Sci & Technol, BR-13560000 Sao Carlos, SP - Brazil

^[3] Univ Fed Parana UFPR, Dept Quim, Lab Sensores Eletroquim LabSensE, BR-81531980 Curitiba, Parana - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SENSORS AND ACTUATORS B-CHEMICAL; v. 264, p. 20-26, JUL 1 2018.
• Citações Web of Science: 9

Resumo

In this work, we report the development of a new disposable electroanalytical device based on direct transfer of graphite from a common pencil, by drawing and painting a three electrodes system, on a corrugated fiberboard substrate (PD-CFB). Surface morphology and electrochemical features were investigated by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and cyclic voltammetry (CV) techniques. Wide useful potential windows in different electrolyte solutions were verified. As proof of concept, the proposed sensor was applied for catechol (CA) detection in environmental samples. Following the optimal experimental conditions, a linear dynamic response (LDR) was in the range of 0.051.1 mmol L-1 with a limit of detection (LOD) of 0.01 mmol L-1. The proposed architecture allowed the construction of electroanalytical device by easy and feasible procedure using non-toxic and renewable materials (ecofriend) with low cost. In addition, the electrodes can be used without any pretreatment of the electrode surface. (C) 2018 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 16/12697-4 - Sensores nanoestruturados modificado com grafeno e tapioca para determinação de compostos fenólicos e bases nitrogenadas
• Beneficiário: Luiz Otávio Orzari
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 15/19099-2 - Desenvolvimento de sensores e biossensores eletroquímicos para diversos fins analíticos
• Beneficiário: Bruno Campos Janegitz
• Modalidade de apoio: Auxílio à Pesquisa - Regular