CELASCO , Edvige

Ni nanoclusters up to 30 Å in diameter are grown by Ni deposition on ultrathin MgO/Ag(100) films at different temperatures and characterized by combining lowtemperature scanning tunneling microscopy with photoemission and vibrational spectroscopies. At 200 K, both small NixOy aggregates and 2D Ni nanoparticles of average size close to 12 Å...

The chemical reactivity of single layers of supported graphene (G) is affected by the nature of the underlying substrate: in particular CO chemisorption occurs on G/Ni(111), while graphene on Cu is inert. Here, we demonstrate experimentally that doping of the G layer with nitrogen atoms further increases the reactivity of the G/Ni(111) system...