Abstract
We studied using dynamic Monte Carlo (DMC) models the size-selective kinetic characteristics of CO monolayer oxidation (CO stripping) on multiscale nanostructured Pt/GC model electrodes comprising nanodisks with diameters of 120 nm and nanoparticles with diameters of 6 nm. We used the DMC models to simulate preadsorbed CO (COad) oxidation peaks and voltammetry responses for the two types of nanostructures and compared them to experiments. Our DMC simulations showed that the different CO stripping voltammetry peaks for the nanodisks and the nanoparticles observed in experiments result from different surface motilities of the COad molecules on the catalyst surfaces and from different initial COad configurations.
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