Electrochemical determination of rutin by using NiFe2O4 nanoparticles loaded reduced graphene oxide

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.

NiO‐Co3O4‐rGO as an Efficient Electrode Material for Supercapacitors and Direct Alcoholic Fuel Cells

“…[ 32 ] Besides, diffraction peaks for (111), (200), (220), (311), and (222) observed at 2θs of 37.1°, 43.3°, 63.0°, 75.5°, and 79.5°, respectively, which are in agreement with Co 3 O 4 pattern through JCPDS card no 01‐080‐1532. [ 33 ] The crystal size of the prepared material, using the Scherer equation (D = (0.9 λ)/βcosθ), [ 34 ] obtain about 20 nm. In the diffraction pattern of NCR, the distribution of NC on the graphene surface reduces its crystalline structure that causes a decrease in peak intensity.…”