期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 4, 期 1, 页码 62-66出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/S1388-2481(01)00272-7
关键词
voltammetry; boron-doped diamond; cytochrome c; protein adsorption; bioelectrochemistry
Highly boron-doped diamond electrodes are characterized voltammetrically employing Ru(NH3)(6)(3+)/(2+), Fe(CN)(6)(3-/4-), benzoquinone/hydroquin one, and cytochrome c redox systems. The diamond electrodes, which are polished to nanometer finish, are initially 'activated' electrochemically and then pretreated by oxidation, reduction, or polishing. All electrodes give reversible cyclic voltammetric responses for the reduction of Ru(NH3)(6)(3+) in aqueous solution. Redox systems other than Ru(NH3)(6)(3+/2+) show characteristic electrochemical behavior as a function of diamond surface pretreatment. In particular, the horse heart cytochrome c redox system is shown to give reversible voltammetric responses at Al2O3, polished boron-doped diamond electrodes. No voltammetric response for cytochrome c is detected at anodically pretreated diamond electrodes. The observations are attributed to preferential interaction of the polished diamond surface with the reactive region of the cytochrome c molecule and low interference due to a lack of protein electrode fouling. (C) 2002 Published by Elsevier Science B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据