Channel Flow Cell for Attenuated Total Reflection Fourier Transform Infrared Spectroelectrochemistry

Rachael Barbour, Zhenghao Wang, In Tae Bae, Yuriy V. Tolmachev, Daniel Alberto Scherson

研究成果: Article

12 引用 (Scopus)

抄録

A channel-type spectroelectrochemical cell is described for the acquisition of potential difference (PD) attenuated total reflection Fourier transform infrared (ATR-FT-IR) spectroscopy of solution phase species generated at an electrode surface under conditions of well-defined laminar flow. The capabilities of the cell have been assessed using the reduction of bisulfite (2 M) in a weakly acidic (pH = 5.25), unbuffered, aqueous electrolyte as a model system. The PD ATR-FT-IR spectrum obtained at -0.85 V vs SCE, a potential negative enough for the reduction of HSO3-to proceed, compared to the spectrum recorded at a potential at which no reaction occurs (0.0 V vs SCE) as a reference, was dominated by negative- and positivepointing contributions due to the reactant, bisulfite, and the predominant product, dithionite, respectively. Also identified in the spectrum was sulfite, which is produced by the dissociation of bisulfite induced by the increase in the pH of the medium during the reduction reaction. Theoretical aspects regarding the quantitative analysis of these data are briefly discussed.

元の言語English
ページ(範囲)4024-4027
ページ数4
ジャーナルAnalytical chemistry
67
発行部数21
DOI
出版物ステータスPublished - 1995 1 1
外部発表Yes

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Spectroelectrochemistry
Channel flow
Fourier transforms
Infrared radiation
Dithionite
Sulfites
Laminar flow
Electrolytes
Electrodes
Chemical analysis
hydrogen sulfite

ASJC Scopus subject areas

  • Analytical Chemistry

これを引用

Channel Flow Cell for Attenuated Total Reflection Fourier Transform Infrared Spectroelectrochemistry. / Barbour, Rachael; Wang, Zhenghao; Bae, In Tae; Tolmachev, Yuriy V.; Scherson, Daniel Alberto.

:: Analytical chemistry, 巻 67, 番号 21, 01.01.1995, p. 4024-4027.

研究成果: Article

Barbour, R, Wang, Z, Bae, IT, Tolmachev, YV & Scherson, DA 1995, 'Channel Flow Cell for Attenuated Total Reflection Fourier Transform Infrared Spectroelectrochemistry', Analytical chemistry, 巻. 67, 番号 21, pp. 4024-4027. https://doi.org/10.1021/ac00117a033
Barbour, Rachael ; Wang, Zhenghao ; Bae, In Tae ; Tolmachev, Yuriy V. ; Scherson, Daniel Alberto. / Channel Flow Cell for Attenuated Total Reflection Fourier Transform Infrared Spectroelectrochemistry. :: Analytical chemistry. 1995 ; 巻 67, 番号 21. pp. 4024-4027.
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