Evaluation of a Nanocomposite Based on Reduced Graphene Oxide and Gold Nanoparticles as an Electrochemical Platform for Detection of Sulfamethazine

Author(s)

Silva, Martin ; Cesarino, Ivana

• Document type: Journal article
• Source: JOURNAL OF COMPOSITES SCIENCE; v. 3, n. 2, p. 12-pg., 2019-06-01.

Abstract

A nanocomposite based on reduced graphene oxide (rGO) and gold nanoparticles (AuNPs) was synthesized by the microwave-assisted hydrothermal method and applied in the determination of sulfamethazine (SMZ) in swine effluent using a glassy carbon (GC) electrode. The rGO-AuNPs nanocomposite was characterized morphologically, electrochemically and spectrochemically, showing that rGO was modified with the AuNPs. The GC/rGO-AuNPs electrode was optimized for the determination of SMZ, achieving detection limits of 0.1 mu mol L-1. The proposed sensor was successfully applied to the determination of SMZ in synthetic swine effluent samples. (AU)

• FAPESP's process: 17/24274-3 - Development of glucose biosensor as an analytical tool aiming the optimization of second-generation ethanol production from pineapple residues
• Grantee: Ivana Cesarino
• Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants