Simultaneous Electrochemical Sensing of Dopamine, Ascorbic Acid, and Uric Acid Using Nitrogen-Doped Graphene Sheet-Modified Glassy Carbon Electrode

Nitrogen (N) doping is a well-known approach that can be effectively used to tune the properties of graphene-supported materials. The current attempt followed simple hydrothermal protocol for fabrication N-doped graphene sheets (N-GSs). N-GSs were subsequently applied modify surface glassy carbon electrode (GCE) dopamine (DA) electrochemical sensor (N-GSs/GCE), tested on basis differential pulse voltammetry (DPV). findings highlighted limit detection (LOD) as narrow 30 nM and linear response in concentration range between 0.1 700.0 ?M. modified could successfully determine DA co-existence uric acid (UA) ascorbic (AA), results which verified potent electrocatalytic performance proposed towards AA, DA, UA oxidation, three distinct voltammetric peaks at 110, 250, 395 mV via DPV. practical applicability as-developed N-GSs/GCE was confirmed by sensing study analytes real specimens, with satisfactory recovery rates.