قلخاني معصومه نويسنده , بهشتيان جواد نويسنده , حسيني نيا بهرام نويسنده Chemistry Department, Faculty of Sciences, Shahid Rajaee Teacher Training University, P.O. BOX 16785-163, Tehran, Iran Hosseini nia Bahram , اناركي فيروز اعظم نويسنده Chemistry Department, Faculty of Sciences, Shahid Rajaee Teacher Training University, P.O. BOX 16785-163, Tehran, Iran Anaraki Firooz Azam
In this study, undoped ZnO, Fe and Mn doped ZnO nanostructures were synthesized by hydrothermal method. The morphology of nanostructures was characterized by Scanning Electron Microscope. The electrochemical response of the carbon paste electrode modified with nanoparticles of ZnO and also ZnO doped with Fe and Mn toward levodopa (L-Dopa) was studied. Studies of cyclic voltammetry using provided modified electrode showed electro catalytic properties for electro-oxidation of L-Dopa, and a significant reduction in anodic over voltage compared to bare electrode was observed. Best response was obtained in terms of the current enhancement, overvoltage reduction, and reversibility improvement of the L-Dopa oxidation reaction under experimental conditions by modified electrode with zinc oxide nanoparticles doped with iron.