Synthesis of nanocomposites material Fe/ GNPs/ Porphyrene and the electrochemical properties investigation

Abstract

Electrochemical sensors are currently being developed and widely applied in many fields with new materials to increase the accuracy and selectivity of the method. In this study, Fe/GNPs materials were synthesized from green chemistry method, combined with recombinant TCPP process to create Fe/GNPs/TCPP nanocomposite materials. The structure and morphology of the formed products were studied by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy. The morphological and structural analysis results of the products showed that Fe/GNPs/TCPP nanocomposites were formed from nano-structured zero valent iron particles with an average size of 15-60 nm uniformly distributed on the surface of graphene plates 2-10 nm thick, interspersed with porphyrin nanofibers with a diameter of 30 nm. The materials were investigated and evaluated for their electrochemical properties through cyclic potential scanning (CV), electrochemical impedance spectroscopy (EIS) on a three-electrode electrochemical system. The  electrochemical analysis results have demonstrated that Fe/GNPs/TCPP nanocomposite materials have good properties suit for application as electrochemical sensors in the analysis of residues of antibiotics, pesticides in agricultural production.