循环伏安法制备普鲁士蓝膜的机理

The Mechanism of the Preparation of Prussian Blue with Cyclic Voltammogram Method

利用循环伏安(CV)法制备了普鲁士蓝(PB)膜修饰电极。在制备过程中采用循环伏安和电化学石英晶体微天平(EQCM)技术对成膜过程进行了现场监测。结果表明在不同的电位扫描范围内发生的成膜反应不同,且当电位小于250 mV时,无法在电极表面沉积普鲁士蓝膜。在此基础上提出了循环伏安法制备普鲁士蓝膜的成膜机理。

Prussian Blue modified Electrode was prepared with cyclic voltammogram method. The techniques of cyclic voltarnmetry and electro-chemical quartz crystal micro-balance are employed to detect the process of the deposition. The results show that the reactions of deposition are different with the range of voltage scanning change. The Prussian Blue can not be deposited on the electrode as the voltage less than 250 mV （vs. SCE）. The mechanism of the Prussian Blue deposition with cyclic scanning method is proposed.