A Novel Method for the Detection of SARS-CoV-2 Based on Graphene-Impedimetric Immunosensor

Overview

Journal Materials (Basel)

Publisher MDPI

Date 2021 Aug 7

PMID 34361424

Citations 17

Authors

Gabriel C Zaccariotto

Martin K L Silva

Giovanna S Rocha

Ivana Cesarino

Affiliations

Soon will be listed here.

Abstract

Due to the SARS-CoV-2 pandemic, there has been an increase in the search for affordable healthcare devices for mass testing and rapid diagnosis. In this context, this work described a new methodology for SARS-CoV-2 detection based on an impedimetric immunosensor developed using the advantageous immobilization of antibodies in the reduced graphene oxide (rGO). The rGO was obtained by chemical synthesis from the commercial graphene oxide (GO), and the materials were morphologically, electrochemically and visually characterized. The cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) techniques were used to evaluate the fabrication steps of the immunosensor. The electrochemical immunoassay was considered for SARS-CoV-2 spike protein RBD detection using a impedimetric immunosensor and redox couple ([(Fe(CN))]) as a probe. The immunosensor was effectively developed and applied in the detection of SARS-CoV-2 spike protein RBD in saliva samples.

Citing Articles

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