Strong effects of cluster size and air exposure on oxygen reduction and carbon oxidation electrocatalysis by size-selected Pt(n) (n ≤ 11) on glassy carbon electrodes.

@article{Proch2013StrongEO,
  title={Strong effects of cluster size and air exposure on oxygen reduction and carbon oxidation electrocatalysis by size-selected Pt(n) (n ≤ 11) on glassy carbon electrodes.},
  author={Sebastian Proch and Mark A. Wirth and Henry S White and Scott L Anderson},
  journal={Journal of the American Chemical Society},
  year={2013},
  volume={135 8},
  pages={
          3073-86
        }
}
Model Pt(n)/glassy carbon electrodes (Pt(n)/GCE) were prepared by deposition of mass-selected Pt(n)(+) (n ≤ 11) on GCE substrates in ultrahigh vacuum. Electrocatalysis under conditions appropriate for the oxygen reduction reaction (ORR) was studied, for samples both in situ with no exposure to laboratory air and with air exposure prior to electrochemical measurements. Of the small clusters, only a few cluster sizes show the expected ORR activity, and in those cases, the activity per Pt atom is… CONTINUE READING
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