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 %… Show more
“…33 Alternatively, the Raman bands at 250.1 and 509 cm −1 are attributed to the A 1g mode and assigned to the Fe-O vibrational stretching. 28,34 The stretching vibration band at 634.7 cm −1 is associated with the E g mode, corresponding to the Fe-O symmetric stretching vibration. The enhanced peak intensity at 1332.7 cm −1 is ascribed to the Al-O bond.…”
“…33 Alternatively, the Raman bands at 250.1 and 509 cm −1 are attributed to the A 1g mode and assigned to the Fe-O vibrational stretching. 28,34 The stretching vibration band at 634.7 cm −1 is associated with the E g mode, corresponding to the Fe-O symmetric stretching vibration. The enhanced peak intensity at 1332.7 cm −1 is ascribed to the Al-O bond.…”
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