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

研究成果: Article

8 引用 (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.

元の言語English
ページ(範囲)1088-1091
ページ数4
ジャーナルAnalytical chemistry
88
発行部数2
DOI
出版物ステータスPublished - 2016 1 19
外部発表Yes

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Reaction intermediates
Superoxides
Oxygen
Electrodes
Bearings (structural)
1-Propanol
Oxidation
Glassy carbon
Rotating disks
Hydrogen Peroxide
Monolayers
Rate constants
Electric potential
Experiments

ASJC Scopus subject areas

  • Analytical Chemistry

これを引用

Rotating Ring-Disk Electrode Method for the Detection of Solution Phase Superoxide as a Reaction Intermediate of Oxygen Reduction in Neutral Aqueous Solutions. / Feng, Zhange; Georgescu, Nicholas S.; Scherson, Daniel Alberto.

:: Analytical chemistry, 巻 88, 番号 2, 19.01.2016, p. 1088-1091.

研究成果: Article

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