A functionalized renewable carbon-based surface for sensor development

Author(s)

Silva, Martin K. L. ^[1] ; Leao, Alcides L. ^[1] ; Sain, Mohini ^{[2, 3]} ; Cesarino, Ivana ^[1]

Affiliation

^[1] Sao Paulo State Univ UNESP, Sch Agr, Ave Univ 3780, BR-18610034 Botucatu, SP - Brazil

^[2] Univ Toronto, Dept Mech & Ind Engn, Toronto, ON - Canada

^[3] Univ Toronto, Ctr Biocomposites & Biomat Proc, Fac Forestry, Toronto, ON - Canada

• Document type: Journal article
• Source: Journal of Solid State Electrochemistry; v. 25, n. 3, p. 1093-1099, MAR 2021.
• Web of Science Citations: 0

Abstract

This paper describes the surface modification of glassy carbon (GC) electrodes with a bamboo-based renewable carbon (RC) before and after an acid functionalization procedure with a sulfonitric solution (1:3 HNO3/H2SO4). The morphology and structural characterization indicate an increase of functional groups in the functionalized renewable carbon (RCF) surface. The enhanced electroanalytical properties of RC and RCF were evaluated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) in two different setups, in the presence of the redox couple ({[}Fe(CN)(6)](3-/4-)) and escitalopram (EST). The results revealed an enhancement for the electrochemical responses of both inorganic and organic compounds in the electrolyte. Therefore, the use of new carbon-based materials such as renewable carbon for development of electrochemical sensors brings a fresh approach to low-cost device development. (AU)

• FAPESP's process: 17/07288-0 - Development of an immunosensor based on graphene for the detection of enterotoxin A of Staphylococcus aureus in milk samples
• Grantee: Giovanna da Silva Rocha
• Support Opportunities: Scholarships in Brazil - Scientific Initiation