Author, as appears in the article.: Khan MAR; Vieira CAC; Riu J; Sales MGF
Department: Química Analítica i Química Orgànica
URV's Author/s: Riu Rusell, Jordi
Project code: CTQ2016-77128-R
Keywords: Paper substrate Electropolymerization Carbon-printed electrodes 3-electrode system 2-electrode system
Abstract: © 2020 Elsevier B.V. This work reports the simple and inexpensive fabrication of homemade paper-based carbon-printed electrodes (HP C-PEs), aiming to produce an alternative way to generate electrochemical biosensors to all and promoting their wide use. This is especially important in times of pandemics, considering the excellent features of electrochemical biosensing, which may ensure portability, low-cost and quick responses. HP C-PEs were fabricated using a standard cellulose filter paper that was first modified with wax, to make it hydrophobic. Then, the electrodes were manually printed on top of this cellulose/wax substrate. The electrodes were designed by having standard configurations for potentiometric and electrochemical readings, combining two or three electrodes. In general, both electrode systems showed excellent electrochemical and mechanical features, which were better in specific cases than commercial devices. The 3-electrode system displayed high current levels with low peak-to-peak potential separation, yielding highly stable signals after consecutive electrode bending that corresponded to high active areas. The possibility of modifying the devices with polymers produced in-situ was also explored and proven successful, providing also advantageous features when compared to other devices. The 2-electrode system was also proven highly stable and capable of subsequent use in potentiometric sensing development. Overall, the fabrication process of the 2- and 3-electode systems described herein may be employed in laboratories to produce successful electrochemical biosensors, with the final devices displaying excellent electrochemical and mechanical features. This procedure offers the advantages of being simple and inexpensive, when compared to other commercial devices, while using materials that are promptly available and that may undergo a worldwide use.
Thematic Areas: Zootecnia / recursos pesqueiros Spectroscopy Saúde coletiva Química Nutrição Medicina veterinaria Medicina iii Medicina ii Medicina i Materiais Interdisciplinar Geociências General medicine General chemistry Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Engenharias i Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Chemistry, analytical Chemistry (miscellaneous) Biotecnología Biodiversidade Biochemistry Astronomia / física Analytical chemistry Administração pública e de empresas, ciências contábeis e turismo
licence for use: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 0039-9140
Author's mail: jordi.riu@urv.cat
Author identifier: 0000-0001-5823-9223
Record's date: 2024-07-27
Papper version: info:eu-repo/semantics/acceptedVersion
Funding program: Programa Estatal de Investigación, Desarrollo e Innovación Orientada a los Retos de la Sociedad (Agencia Estatal de Investigación - Ministerio de Economía, Industria y Competitividad)
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Talanta. 224 (121861): 121861-
APA: Khan MAR; Vieira CAC; Riu J; Sales MGF (2021). Fabrication and modification of homemade paper-based electrode systems. Talanta, 224(121861), 121861-. DOI: 10.1016/j.talanta.2020.121861
Acronym: HOMESENS
Entity: Universitat Rovira i Virgili
Journal publication year: 2021
Funding program action: Proyecto de I+D
Publication Type: Journal Publications
Repositori URV