电化学2012，Vol.18Issue(1)：43-50,8.
Fe（CN）63-/4-和细胞色素c电化学反应温度影响比较
Temperature Effects on the Electron-Transfer Reactions of Fe（CN）63-/4- and Cytochrome c
摘要
Abstract
Cyclic voltammetric and chronoamperometric techniques were employed to study the temperature effects on the electrochemical reaction of Fe（CN）63-/4- by self-made thermostatic water bath electrochemical cell. The diffusion coefficient D and the formal heterogeneous electron-transfer rate constant k0 were calculated at dif 3- ferent temperatures from 25 ℃ to 75 ℃. In the Fe（CN）63-/4- system, the DO values of Fe （CN）6 were directly proportional to temperature,while Da of Fe（CN）64- inversely proportional to temperature. The values of k0 decreased with the increase of temperature due possibly to the electrode passivation resulted from the decomposition of Fe（CN）63-/4- to a Prussian blue like film. Since the core of Cytochrome c is the heine iron porphyrin, the redox of Cytochrome c reflects that of the iron atoms, which is, in certain degrees, similar to the electrochemical reactions of Fe（CN）63-/4-. system. Accordingly, the same techniques were used to study the temperature effects on Cytochrome c. The kinetic parameters of Cytochrome c at different temperatures were also calculated and compared with those of Fe（CN）63-/4- system.关键词
温度效应/细胞色素c/扩散系数/异相反应速率常数Key words
temperature effect/cytoehrome c/diffusion coefficient/formal heterogeneous electron-transfer rate constant分类
化学化工引用本文复制引用
汤儆,杜琳,肖孝建,张宁..Fe（CN）63-/4-和细胞色素c电化学反应温度影响比较[J].电化学,2012,18(1):43-50,8.基金项目
国家自然科学基金项目（No.20873112,No.21073038）资助 （）
