Pt, PtBi, PtCu and PtCuBi clusters grown in a plasma based gas aggregation source for glycerol electrocatalytic oxidation
Résumé
Metallic Pt, PtBi, PtCu and PtCuBi clusters were grown in a plasma magnetron based gas aggregation source. The results show how the addition of Cu or Bi to the Pt clusters leads to the decrease of cluster mass. X-ray diffraction results show that Pt-based clusters have different lattice parameter values depending on the formation of alloys or the presence of other phases. Electrochemical measurements show that the addition of Bi or Cu to the Pt clusters enhances the catalytic activity for glycerol oxidation (decrease of the onset potential).
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