- 作者： --
- 作者服務機構： Department of Chemistry, Faculty of Science, University of Urmia, Urmia, Iran
- 中文摘要： An organic-inorganic composite electrode was prepared by the sol-gel method. For this purpose the carbon composite electrode (CCE) was modified with copper hexacyanoferrate (CuHCF). The CuHCF-CCE was prepared by two methods. In one method CCE was prepared in one step and in another method the electrode was prepared in a two-step process. The electrochemical behavior of the CuHCF modified electrode was studied by cyclic voltammetry; the modified electrode shows a pair of peaks with a surface-confined characteristic in a 0.1 M phosphate buffer (pH 7) with K+ cation, as a supporting electrolyte. The CuHCF-CCE showed electrocatalytic activity toward oxidation of Dopamine (DA). The kinetics of the catalytic reaction was investigated by using chronoamperometry. The average value of the rate constant for catalytic reaction and the diffusion coefficient were calculated. At a 0.85 V potential under hydrodynamic conditions (stirred solution), the oxidation current is proportional to the dopamine concentration, and the calibration plot was linear over the concentration range of 5-85 mM.
- 英文摘要： --
- 中文關鍵字： Modified-electrode; Sol-Gel electrode; Copper hexacyanoferrate; Electrocatalytic oxidation of Dopamine.
- 英文關鍵字： --
