Electrochemical determination of rutin by using NiFe2O4 nanoparticles-loaded reduced graphene oxide
Abstract
Abstract A binary transition metal oxide based on nickel and iron (NiFe2O4) and hybridization of this nanomaterial with reduced graphene oxide (rGO) are synthesized by the hydrothermal method. X-ray diffraction (XRD), and Raman spectroscopy confirm the successful synthesis of these materials. Also, scanning electron microscope (SEM) and transmission electron microscope (TEM) images illustrated the particle morphology with the particle size of 20 nm. The synthesized material is then examined as a sensor on the surface of the glassy carbon electrode to detect a very small amount of rutin .Some electrochemical tests such as cyclic voltammetry, differential pulse voltammetry, impedance spectroscopy indicate the remarkable accuracy of this sensor and its operation in a relatively wide range of concentration of rutin (100 nM-100 µM). Considering the very good results, it seems the NiFe2O4-rGO can be considered as a new proposal in the development of accurate and inexpensive electrochemical sensors.
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