Abstract
In the present work, a reduced graphene oxide and multiwalled carbon nanotube (RGO/MWCNTFe₃O₄) composite decorated with Fe₃O₄ magnetic nanoparticles was prepared as an electrochemical sensor. The surface morphology of the prepared composite was identified by scanning electron microscopy and X-ray diffraction. The electrochemical properties of the GCE/RGO/MWCNT-Fe₃O₄ electrode were investigated by electrochemical impedance spectroscopy, cyclic voltammetry and amperometry. The GCE/RGO/MWCNT-Fe₃O₄ electrode exhibited higher electrocatalytic performance towards the oxidation of hydrazine. In the optimal conditions, the GCE/RGO/MWCNT-Fe₃O₄ electrode showed a wide linear range (0.15-220 μM), low limit of detection (LOD) (0.75 μM), and high sensitivity (2.868 μA μM-1 cm-2). The prepared GCE/RGO/MWCNT-Fe₃O₄ electrode also had excellent repeatability, selectivity, and reproducibility. The practical application of the electrode was confirmed with various spiked water samples and demonstrated acceptable recovery.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have