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Effect of Triton X-100 on electron transfer kinetics at the interface between two immiscible electrolyte solutions: a scanning electrochemical microscopy study
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UNSPECIFIED (2000) Effect of Triton X-100 on electron transfer kinetics at the interface between two immiscible electrolyte solutions: a scanning electrochemical microscopy study. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 494 (1). pp. 47-52. ISSN 0022-0728.
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Abstract
Adsorption of the nonionic surfactant, Triton X-100, at the interface between two immiscible electrolyte solutions (ITIES) and its effect on the oxidation of decamethyl ferrocene in 1,2-dichloroethane by aqueous Ru(CN)(6)(3-) has been investigated using scanning electrochemical microscopy. As the concentration of Triton X-100 in the aqueous phase was increased from 0 to 2.5 x 10(-4) M, the rate constant for electron transfer (ET) across the ITIES decreased in a manner consistent with the surfactant blocking the area available for the reaction. The decrease in rate constant with increasing surfactant concentration was successfully analyzed in terms of Langmuirian adsorption of the surfactant, with an equilibrium constant of (2.72 +/- 0.06) x 10(4) M-1. The overall behavior observed indicates that the ET reaction occurs primarily at the portion of the ITIES free from surfactant. (C) 2000 Elsevier Science B.V. All rights reserved.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Journal or Publication Title: | JOURNAL OF ELECTROANALYTICAL CHEMISTRY | ||||
Publisher: | ELSEVIER SCIENCE SA | ||||
ISSN: | 0022-0728 | ||||
Official Date: | 1 December 2000 | ||||
Dates: |
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Volume: | 494 | ||||
Number: | 1 | ||||
Number of Pages: | 6 | ||||
Page Range: | pp. 47-52 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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