Pb intercalation underneath a graphene layer on Ru(0001) and its effect on graphene oxidation.

نویسندگان

  • Li Jin
  • Qiang Fu
  • Rentao Mu
  • Dali Tan
  • Xinhe Bao
چکیده

Intercalation of Pb at graphene/Ru(0001) interfaces has been dynamically observed using in situ low energy electron microscopy and photoemission electron microscopy. A comparative study of Pb intercalation on the submonolayer and complete monolayer graphene surfaces suggest that the Pb intercalation happens through the open edges of graphene islands, starting at around 150 °C. Spatially-resolved low energy electron diffraction measurements reveal that the Pb-intercalated graphene overlayers are quasi-free-standing. The intercalated graphene sheets show lower reactivity to oxidation in O(2).

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عنوان ژورنال:
  • Physical chemistry chemical physics : PCCP

دوره 13 37  شماره 

صفحات  -

تاریخ انتشار 2011