2004
DOI: 10.3184/0079674044037441
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Microelectrochemical Techniques for Probing Kinetics at Liquid/Liquid Interfaces

Abstract: We provide an overview of recent advances in microelectrochemical approaches to investigate the kinetics of various physicochemical processes that occur at the interface between two immiscible electrolyte solutions (ITIES). To place the advances in context, background material on the structure of the ITIES, derived from both experimental studies and computer simulation, is also provided. The main focus of the article is micro-ITIES techniques, single droplet measurements, microelectrochemical measurements at e… Show more

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Cited by 15 publications
(10 citation statements)
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“…This tip generation‐surface collection (TG‐SC) mode of SECM operation was used by Unwin and coworkers for studying heterogeneous electron transfer of different interfaces ,,. In this technique, a thermodynamically controlled flux of electroactive species is generated at the SECM tip close to a surface and collected by electroactive sites on the surface.…”
Section: Resultsmentioning
confidence: 99%
“…This tip generation‐surface collection (TG‐SC) mode of SECM operation was used by Unwin and coworkers for studying heterogeneous electron transfer of different interfaces ,,. In this technique, a thermodynamically controlled flux of electroactive species is generated at the SECM tip close to a surface and collected by electroactive sites on the surface.…”
Section: Resultsmentioning
confidence: 99%
“…In this case, the curves have characteristic peaks with magnitudes that are diagnostic of the rate constants. The corresponding bimolecular rate constants (k 12 on the Galvani potential across the ITIES. The trend appears to be that the ET rate constant increases with increasing driving force, by decreasing [TBA + ] w .…”
Section: Resultsmentioning
confidence: 99%
“…Then, using Eqs. (12) and (13), we calculate k 0 12 and k 00 12 and compare the values to k 12 (as a function of v), as summarized in Table 1. From the table, it can be seen that the experimental rate constants are reasonably close to the theoretical values obtained from the sharp boundary model.…”
Section: Assessment Of Data In Terms Of Marcus Theorymentioning
confidence: 99%
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“…The increasing interest in the study of ion transfer across the interface between two immiscible electrolyte solutions (ITIES) has led to the development of probes for exploring ion fluxes by means of polarizing the ITIES. 14,15 Similarly, our group has introduced probes based on Hg for imaging alkali ions in battery solvent environ-ments. 16,17 Furthermore, probes for hybrid techniques such as SECM-AFM (atomic force microscopy) have allowed the determination of topographical and electrochemical information by recording the interaction force with the AFM probe and the current with the electrode.…”
Section: Chapter 1: Introduction To Scanning Electrochemical Microscomentioning
confidence: 99%