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采用循环伏安法探讨了细胞色素c(Cyt c)在纳米Mn3O4修饰玻碳电极表面的直接电化学行为。实验结果表明,Cyt c在纳米Mn3O4修饰玻碳电极上呈现一对峰形较好且准可逆的氧化还原峰,其式电位(E0)为56 mV,峰电流与扫描速度呈线性关系,表明电极过程是一个表面控制过程,电化学反应效率常数(ks)为4.25 s-1,固定在Mn3O4上的Cyt c能促进过氧化氢的催化还原,其实验结果可为新型传感器的研制提供依据。
Cyclic voltammetry was used to investigate the direct electrochemical behavior of cytochrome c (Cyt c) on the surface of nano-Mn3O4 modified glassy carbon electrode. The experimental results show that Cyt c exhibits a pair of redox peaks with good peak shape and quasi-reversibility at the nanocrystalline Mn3O4 modified glassy carbon electrode. The potential (E0) of Cyt c is 56 mV, and the peak current has a linear relationship with the scanning speed. The process is a surface control process. The electrochemical reaction efficiency constant (ks) is 4.25 s-1. The Cyt c immobilized on Mn3O4 can promote the catalytic reduction of hydrogen peroxide. The experimental results may provide the basis for the development of novel sensors.