Electrocatalytic activity of platinum-polyaniline and palladium-polyaniline systems obtained by cycling the electrode potentialстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Steady-state current densities of electrooxidation of CH,OH, HCOOH, and CO at the Pt-PAN-CC electrodes (where PAN and GC stand for polyaniline and glassy carbon, respectively) and those of electrooxidation of HCOOH at the Pd-PAN-GC electrodes are measured (per cm(2) of the true metal-catalyst surface area). The found higher activity of Pt and Pd particles incorporated in PAN, as compared with Pt/Pt and Pd/Pt, is attributed to interaction between metal-catalyst particles and the polymeric matrix. The activation effect is the most pronounced for the HCOOH electrooxidation at Pd-PAN-GC. The data concerning hydrogen evolution testify in favor of a decrease in exchange currents of this reaction upon going from Pt to Pt-PAN-CC electrodes.