Use of the monodisperse Pt/Ni@rGO nanocomposite synthesized by ultrasonic hydroxide assisted reduction method in electrochemical nonenzymatic glucose detection

An electrochemical non-enzymatic sensor was developed for the detection of glucose based on an electrode modified with monodisperse platinum-nickel nanocomposites-decorated on reduced graphene oxide (Pt/Ni@rGO) which was synthesized using a new ultrasonic hydroxide assisted reduction method. Because the nanocomposites prepared by using NaOH (OH– ligands) are much smaller nanocomposites on the supports compared to the ones without OH– ligands. Such a monodisperse Pt/Ni@rGO nanocomposites-based electrode exhibited a high electrochemical activity for electrocatalytic oxidation of glucose in alkaline solution. Amperometric analysis showed a glucose sensitivity of 171.92 μA/mM cm2 of, the detection limit of 6.3 μM and a linear range of 0.02–5.0 mM glucose concentration. Fabricated sensor platform demonstrated long-term stability and good reproducibility, in addition to high selectivity. [Display omitted] •A highly efficient sensor platform using Pt/Ni nanohybrids•The synthesis of nanohybrid by using a new ultrasonic hydroxide assisted reduction method.•Using of OH ligands in this method results in much smaller nanocomposites.•Nanohybrid Sensor displays excellent detection limit, sensitivity, linear range.•Thanks to the ultrasmall sizes, monodispersity and high Pt and Ni % surface of novel materials.