Electrode stimulation: Redox reactions induced by modulating the electrostatic potential in solution

Electrode stimulation: Redox reactions induced by modulating the electrostatic potential in solution
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电极刺激:通过调节溶液中的静电势诱导氧化还原反应

DOI:
10.1016/j.electacta.2019.134957
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发表时间:
2019
影响因子:
6.6
通讯作者:
Scherson, Daniel
Scherson, Daniel
中科院分区:
材料科学2区
文献类型:
--
作者:
Han, Qi;Georgescu, Nicholas S.;Gibbons, John;Scherson, Daniel

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通过改变紧邻工作电极(WE)的溶液中的静电势来调节模型非均相氧化还原反应的速率,工作电极相对于参比电极保持在固定值。该方法涉及在放置在 WE 前面且距 WE 较近的刺激电极 (SE) 和远处的反电极之间传递电流。选择条件使得溶液中的电势分布非常接近由一次电流分布规定的电势分布,从而保持SE和WE之间的区域中的电解质成分几乎不受干扰。提供了在酸性含水电解质中氧化金的形成和 Pt 上吸附的一氧化碳氧化的图示。
The rates of model heterogeneous redox reactions have been modulated by changing the electrostatic potential in the solution immediately adjacent to a working electrode, (WE), kept at a fixed value with respect to a reference electrode. The approach involves passing current between a stimulating electrode (SE) placed in front and at a short distance from the WE and a distant counter electrode. Conditions were selected so that the potential distribution in solution closely approximates that prescribed by the primary current distribution and thus maintain the electrolyte composition in the region between SE and WE virtually unperturbed. Illustrations are provided for the formation of gold oxide and the oxidation of adsorbed carbon monoxide on Pt in acidic aqueous electrolytes.
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