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. 2015 Oct 9;6:8550. doi: 10.1038/ncomms9550

Figure 1. Hydrogen dissociation and spillover on a Pt/Cu(111) SAA.

Figure 1

(a) TPD traces of H2 uptake on 0.02 ML and 5 ML Pt/Cu(111) surface exposed to H2 at 85 K. Gas exposures are quoted in Langmuirs (L). (b) STM image of 0.02 ML Pt/Cu(111) SAA surface where the Pt atoms appear as isolated protrusions substituted into the Cu(111) surface. Scale bar, 1 nm. (c) STM image showing H atom spillover onto Cu in which the H atoms appear as depressions and cluster into small mobile islands. Pt sites appear in STM images as protrusions. Scale bar, 3 nm.