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Electrochemical Behaviour Of Carbon Dioxide On Platinum And Rhodium

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Abstract:

the electroadsorption and electroreduction of carbon dioxide, and the subsequent electrooxidation of reduced carbon dioxide was studied on polycrystalline and electrofaceted pt and on polycrystalline rh electrodes. the influence of the adsorption potential and the adsorption time was established. combining voltammetric charge measurements and differential electrochemical mass spectrometry (dems) analysis, three adsorbates were tentatively identified, namely cooh and co in bridge and linear configurations on pt, and coh in triple and single adsorption configurations on rh. by applying medium frequency potential routines on the pt-adsorbate/sulphuric acid interface, the existence of equilibrium between adsorbates was demonstrated.

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