Nitrogen-doped graphene: beyond single substitution and enhanced molecular sensing

Graphene is a two-dimensional network in which sp(2)-hybridized carbon atoms are arranged in two different triangular sub-lattices (A and B). By incorporating nitrogen atoms into graphene, its physico-chemical properties could be significantly altered depending on the doping configuration within the sub-lattices. Here, we describe the synthesis of large-area, highly-crystalline monolayer N-doped graphene (NG) sheets via atmospheric-pressure chemical vapor deposition, yielding a unique N-doping site composed of two quasi-adjacent substitutional nitrogen atoms within the same graphene sub-lattice (N(2)(AA)). Scanning tunneling microscopy and spectroscopy (STM and STS) of NG revealed the presence of localized…

• UD
  U.S. Department of Energy
• UO
  University of Pennsylvania
• PS
  Pennsylvania State University
• CD
  Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
• FD
  Fonds De La Recherche Scientifique - FNRS
• DO
  Division of Materials Research
• BE
  Basic Energy Sciences
• OR
  Oak Ridge National Laboratory