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金电极上偶氮腺嘌呤的电化学行为研究
Authors
刘佳
史杭
+5 more
吴德印
周剑章
张檬
李明雪
田中群
Publication date
28 December 2019
Publisher
Doi
Cite
Abstract
本文研究了光滑金电极上偶氮腺嘌呤的电化学特性,并确定了相关动力学参数.在含偶氮腺嘌呤的0.2mol·L-1的磷酸盐缓冲液(PBS,pH=4.0~10.0)中,发现其循环伏安图上出现一对氧化还原峰.基于对扫速和伏安峰值电位的分析,结果表明这是一个由吸附控制的可逆偶氮腺嘌呤氧化还原电化学过程.当pH值从低到高改变时,氧化还原峰值向负电位移动,证实H+参与了该反应.通过进一步实验数据分析和电极表面吸附量计算,发现该反应为分步进行的两电子两质子反应.最后,通过快速循环伏安扫描方法确定了电化学过程的表观传递系数α和表观速率常数ks
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Last time updated on 20/11/2020