Electroanalytical Determination of Ziram by Differential Pulse Voltammetry with Reduced Graphene Oxide/Gold Nanoparticles Modified Glassy Carbon Electrode

Abstract

The preparation of gold nanoparticles-reduced graphene oxide-based sensor materials for the determination of zinc(II) dimethyldithiocarbamate (ziram) is described in this paper. The graphene oxide (GO) was synthesized using a modified Hummer’s method. A composite sensor consisting of gold nanoparticles (AuNPs) and reduced graphene oxide (RGO) was electrochemically fabricated on a glassy carbon electrode. The nanocomposite was evaluated utilizing scanning electron microscopy (SEM). Cyclic voltammetry was used to illuminate the modified sensor’s electrochemical properties at each stage of the modification. The suggested sensor was demonstrated good analytical performance to determine ziram pesticide in water and peach juice, including a very low detection limit, a large linear range, and a low RSD.

Metal Oxides Nanomaterials and Nanocomposite-Based Electrochemical Sensors for Healthcare Applications

“…These tiny Au clusters possess low-coordinate Au atoms in comparison to bulk Au poly-crystal surfaces and take higherenergy d states, which are easily reactive and absorb/activate oxygen moieties [23]. In recent years, more robust and practical catalysts of metal oxide nanoparticles dispersed on graphene and carbon nanotubes-based electrochemical sensor systems with comparative or even better catalytic performance than noble metals [13,[24][25][26][27][28][29]. Early transition metals supported on graphene as nanocomposites have fascinated great interest, which has a large volume of geometrical surface area, outstanding electrical conductivity, and decent chemical solidity [13,28,29].…”