普鲁士蓝膜修饰电极循环伏安行为的研究

Studies on the Cyclic Voltammetric Behaviour of the Prussian Blue Film Modified Electrode

本文研究普鲁士蓝(PB)膜修饰电极的循环伏安行为,结果表明,膜中电活性中心间的相互作用导致PB膜电极的伏安行为偏离理想表面波.用有限扩散边界模型解释了高电位扫速下膜电极的伏安行为.在含钾离子的电解质溶液中测得PB膜中电荷传输扩散系数为10^(-9)～10^(-11)cm^2/s.

The cyclic voltammetric studies on the Prussian Blue(PB) film modified electrode are reported. It is shown that the interaction among the electroactive centres in the PB film leads to the difference of the voltammetric behaviour of the modified electrode from ideal waves. For the high scanning rate, the voltammetric behaviour can be explained in terms of the finite diffusion interface model. In a- solution containing potassium ions the charge transport diffusion coefficients are found to be 10-9-10-11cm2/s.