Rotating Ring-Disk Electrode Method for the Detection of Solution Phase Superoxide as a Reaction Intermediate of Oxygen Reduction in Neutral Aqueous Solutions

Zhange Feng, Nicholas S. Georgescu, Daniel Alberto Scherson*

*この研究の対応する著者

研究成果: Article査読

14 被引用数 (Scopus)

抄録

A method is herein described that allows for solution phase superoxide generated via the reduction of dioxygen in neutral aqueous solutions at a rotating disk electrode to be oxidized at a concentric Au ring electrode bearing a covalently linked monolayer of 3-mercapto-1-propanol, a modified surface that blocks the oxidation of solution phase of hydrogen peroxide. Experiments were performed in which the potential of a glassy carbon disk electrode was linearly scanned in the oxygen reduction region and the ring voltage was poised at a value at which superoxide oxidation ensued yielded bell-shaped ring currents. This behavior is consistent with changes in the relative rates constant for the processes involved in the mechanism of oxygen reduction on this carbonaceous material induced by the applied potential which so far had remained undetected using other techniques.

本文言語English
ページ(範囲)1088-1091
ページ数4
ジャーナルAnalytical chemistry
88
2
DOI
出版ステータスPublished - 2016 1月 19
外部発表はい

ASJC Scopus subject areas

  • 分析化学

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