Cu+2 loaded "zeolite A"/ nitrogen-doped graphene as a novel hybrid for simultaneous voltammetry determination of carbamazepine and dopamine

Abstract Cu 2+ loaded "Zeolite A″ hybridized with nitrogen-doped graphene modified glassy carbon electrode (Cu 2+ loaded NaA/NG-GCE), was synthesized and characterized by conventional methods and applied as an electrochemical sensor for simultaneous determination of carbamazepine (CZ) and dopamine (DA) by square wave voltammetry. Electrocatalytic currents were linear against various concentrations of analytes at10-80000 nM for CZ in the presence of DA and 4–100 nM for DA in the presence of CZ. The considerable limits of detection were estimated 6.3 and 3.8 nM for CZ and DA respectively. Finally, a novel effective electrocatalyst was introduced for simultaneous determination of CZ and DA.