Magnetic Fe3O4/GO nanocomposite-modified graphite-epoxy composite electrode for high-performance glucose sensing

An electrochemical sensing platform for glucose sensing was prepared by magnetic loading of Fe3O4/GO nanocomposites on graphite-epoxy composite electrode(GECE). The Fe3O4/GO nanocomposites were prepared by first preparing GO and then modifying it by co-precipitation of Fe2 + and Fe3+. Since the Fe3O...

Full description

Saved in:
Bibliographic Details
Published in:International journal of electrochemical science 2025-01, Vol.20 (1), p.100918, Article 100918
Main Authors: Pak, Wi Song, Ko, Kye Hak, Ri, Jin Hyok, Ro, Jin Hyok
Format: Article
Language:English
Subjects:
Fe3O4 magnetic nanoparticle
Glucose
Graphene oxide
Magnetic loading
Non-enzymatic detection
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An electrochemical sensing platform for glucose sensing was prepared by magnetic loading of Fe3O4/GO nanocomposites on graphite-epoxy composite electrode(GECE). The Fe3O4/GO nanocomposites were prepared by first preparing GO and then modifying it by co-precipitation of Fe2 + and Fe3+. Since the Fe3O4/GO nanocomposites have a magnetic property, they were effectively separated using a magnet and loaded on a graphite-epoxy composite electrode(GECE). The Fe3O4/GO/GECE modified electrode was characterized using scanning electron microscopy (SEM), X-ray diffraction analysis(XRD) and cyclic voltammetry (CV). The fabricated biosensor exhibited an excellent electrocatalytic activity. The linear range for glucose is from 0.5 to 6.5 mM with the detection limit of 268.5 µM (S/N = 3) and the sensitivity of 63.5 mA/mM. The effects of interfering substances such as ascorbic acid (AA), uric acid (UA) and dopamine (DA) were also investigated in details. The results confirmed that these interfering substances did not significantly affect the determination of glucose.
ISSN:1452-3981
1452-3981
DOI:10.1016/j.ijoes.2024.100918