Modified Graphite Pencil Electrode Based on Graphene Oxide-Modified Fe₃O₄ for Ferrocene-Mediated Electrochemical Detection of Hemoglobin.

ABSTRACT: This study describes the synthesis of graphene oxide-modified magnetite (rGO/Fe₃O₄) and its use as an electrochemical sensor for the quantitative detection of hemoglobin (Hb). rGO is characterized by a 2θ peak at 10.03° in its X-ray diffraction, 1353 and 1586 cm^-1 vibrations in Raman spectroscopy, while scanning electron microscopy coupled with energy-dispersive spectroscopy of rGO and rGO/Fe₃O₄ revealed the presence of microplate structures in both materials and high presence of iron in rGO/Fe₃O₄ with 50 wt %. The modified graphite pencil electrode, GPE/rGO/Fe₃O₄, is characterized using cyclic voltammetry. Higher electrochemical surface area is obtained when the GPE is modified with rGO/Fe

SUBMITTER: Elgamouz A 

PROVIDER: S-EPMC10077451 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature