Simple electrochemical procedure for measuring the rates of electron transfer across liquid/liquid interfaces by coating graphite electrodes with thin layers of nitrobenzene

Article Abstract:

A study was conducted to characterize a novel technique that accurately measures the rates of electron transfer across liquid/liquid interfaces established by coating graphite electrodes with thin layers of nitrobenzenes. The method supports thin layers of organic liquids that stick to the surface of pyrolytic graphite electrodes. Rate constants determined for cross-phase electron transfer were studied and compared against the results of studies that utilized scanning electrochemical microscopy.

Oxidation-reduction reaction, Oxidation-reduction reactions, Surface chemistry, Nitrobenzenes

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PtRu alloy and PtRu-WO3 nanocomposite electrodes for methanol electrooxidation fabricated by a sputtering deposition method

Article Abstract:

PtRu alloy and PtRu-WO3 nanocomposite thin-film electrodes for methanol electrooxidation were fabricated by means of a sputtering method. The structural and electrochemical properties of well-defined PtRu alloy thin-film electrodes were characterized using X-ray diffraction (XRD), Rutherford backscattering spectroscopy (RBS), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy, and electrochemical measurements.

Semiconductors and related devices, Semiconductor and Related Device Manufacturing, Thin Film Materials, X-ray diffraction, Thin films, Dielectric films, Photoelectron spectroscopy

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Selecting experimental conditions for measurement of rates of electron-transfer at liquid/liquid interfaces by thin layer electrochemistry

Article Abstract:

The use of thin layers of water immiscible organic solvents on electrode surfaces to evaluate rates of electron transfer across liquid/liquid interface requires reactant concentration in two adjacent phases be selected to minimize the effects of mass transfer on the measured currents. A general inequality derived demonstrates its utility and provides a guide to selection of suitable concentrations of the coreactants.

Electron transport, Mass transfer

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