Abstract
Summary A new apparatus for the study of electrosorption of organic species labelled with 14 C has been developed. A platinum working electrode was prepared by the electroplating of gold deposited on mylar foil. A plastic scintillator was placed immediately under the electrode to achieve a high counting efficiency. The dependence of surface concentration of methanol on electrode potential has been investigated. The surface concentration increased with decrease in the electrode potential over the range 0.1–0.4 V. At potentials above 0.6 V a sharp fall-off in the surface concentration was found. The time required to reach steady-state coverage depends on electrode potential and on methanol concentration in the bulk of the solution. Some conclusions concerning the possible mechanism of methanol electrosorption are presented.
Published Version
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