Evaluation of a nanocomposite based on reduced graphene oxide and gold nanoparticles as an electrochemical platform for detection of sulfamethazine

• Autor(a) principal: Silva, Martin [UNESP]
• Data de Publicação: 2019
• Outros Autores: Cesarino, Ivana [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• DOI: 10.3390/jcs3020059
• Texto Completo: http://dx.doi.org/10.3390/jcs3020059; http://hdl.handle.net/11449/205146
• topic: Gold nanoparticles; Graphene; Nanocomposite; Sulfamethazine

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 µmol L−1 . The proposed sensor was successfully applied to the determination of SMZ in synthetic swine effluent samples.