六氰合铁酸铜钴-多壁碳纳米管修饰电极研究

采用电沉积方法制备六氰合铁酸铜钴-多壁碳纳米管复合修饰电极(CuCoHCF-MWCNTs/GCE).研究碳纳米管用量、电解液组成对该修饰电极性能的影响.结果表明,与单一的六氰合铁酸铜钴薄膜修饰电极相比,六氰合铁酸铜钴-多壁碳纳米管复合修饰电极具有更优良的电化学特性,以其催化氧化过氧化氢,峰电流与过氧化氢浓度在3.16×10-5～2.92×10-3mol·L-1范围内呈良好的线性关系,线性回归方程为ip(μA)=0.5529+1.1299C(×10-4mol·L-1),相关系数r=0.9966,检出限为1.75×10-5mol·L-1.

Study of Electrodes Modified with Hybrid Copper Cobalt Hexacyanoferrate-MWCNTs Composites

The hybrid modified electrodes were obtained by electrochemical deposition of copper-cobalt hexacyanoferrate(CuCoHCF) /multi-walled carbon nanotubes(MWCNTs) on the surface of glassy carbon electrode.The effects of the amount of MWCNTs and composition of electrolyte on the properties of modified electrode had been researched.The copper cobalt hexacyanoferrate-MWCNTs modified electrodes show excellent electrochemical properties compared with that modified only copper-cobalt hexacyanoferrate.The CuCoHCF-MWCNTs/GCE exhibits obvious electrocatalytic activity towards oxidation of hydrogen peroxide.The oxidation peak current increased linearly with the concentration of hydrogen peroxide in the range of 3.16 × 10-5 ～ 2.92 × 10-3 mol· L-1.The linear equation is given up ip(μA) = 0.5529 + 1.1299C(× 10-4 mol·L-1),with the correlation coefficient of 0.9966 and the detection limit of 1.75 × 10-5 mol·L-1.