Synthesis of multimetal nanocatalysts, characterization and electrochemical analysis of glucose sensor effect

In this study, the new (PdCoAg/C) nanostructures were successfully synthesized by the polyol method with the effort to develop electro catalysts, related to the glucose sensor performance of the high glycemic index (GI) in beverages. The characterization of this novel PdCoAg/C electrocatalyst was performed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Energy dispersive X-ray spectroscopy (EDX). The characterization results revealed that electronic state of the PdCoAg/C electrocatalyst was modified by the the addition of third metal. The prepared enzyme-free sensor exhibited excellent catalytic activity against glucose with the wide detection range (0.005 to 0.35 mM), low limit of detection (0.003 mM), high sensitivity (4156.34 μA/mMcm2), and long term stability (10 days) thanks to the synergistic effect between ternary metals. Several energetic drinks as well as orange juice and gaseous beverages were analyzed for the determination of their glucose contents employing PdCoAg/C/NGCE novel sensor system. In this study, data were obtained to provide an important contribution to the literature for the food applications. Keywords: Non-enzymatic sensor, Glucose detection, Ternary metals, Glycemic index, Beverages