耐尔兰A修饰碳纤维微柱电极的电化学性质研究

用循环伏安法将碳纤维柱电极表面官能团化，利用正负离子间的静电作用将耐尔兰Ａ修饰在碳纤维微柱电极（ＣＦＭＣＥ）表面，对该修饰电极的电化学性质进行研究，讨论了它的稳定性，测定了不同ＰＨ值下固定化耐尔兰Ａ电极反应的表现电子转移速率常数ｋ、电荷转移系数α以及参加电极反应的Ｈ＾＋数，实验表明：电极对血戏蛋白在ＣＦＭＣＥ上的还原有电催化作用。

The Study on the Electrochemical Behaviour of Nile Blue A Modified Carbon Fiber Microcylinder Electrode

The functional group-COOH on carbon fiber microcylinder electrode(CFMCE)was formed by electrochemical oxidation with cyclic voltammetry, and the Nile blue A modified CFMCE was manufactured by means of electrostatic attraction. The electrochemical behaviour of the modified electrode was studied,and its stability was discussed.The apparent standard electron transfer rate constant and charge transfer coefficient of fixed Nile blue A at various pH, and the number of H+ participating in electrode reaction were determined.The experiments indicated the modified electrode can catalyze the electrode reaction of hemoglobin at carbon fiber microcylinder electrode.