Graphene Oxide/1-butyl-3-Methylimidazolium Tetrafluoroborate Nanocomposite: Synthesis, Characterization and its Application for the Electrochemical Determination of an Antihistamine and Anticholinergic Embramine

This paper discusses the synthesis and application of graphene oxide (GO)/1-butyl-3-methylimidazolium tetrafluoroborate [BMIM][BF4] nanocomposite. The nanocomposite, GO/[BMIM][BF4] ,was characterized using XRD, XPS, EDX, FESEM, TEM, FT-IR, and Raman techniques. The dispersion of [BMIM][BF4] ionic liquid (IL)in the graphene oxide nanochannels provided remarkable interfacial property to the glassy carbon electrode (GCE) surface. GO/[BMIM]/[BF4]modified GCE sensor enhanced the anodic peak current intensity of Embramine (EMB), which was found proportional to the druf concentration within the range of 4.9 to 24.7 ng l(-1), with a detection limit of 1.5 ng l(-1) and the quantification limit of 4.6 ng l(-1). The redox behavior at varying scan rates revealed that the electro-oxidation process of EMB at GO/1L/GCE was an irreversible diffusion-controlled process. The applicability of the proposed method was further studied for the successful quantification of EMB in the pharmaceutical formulation and human blood plasma. (C) 2022 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.