Nitrogen-doped graphene: beyond single substitution and enhanced molecular sensing
By R. Lv, Qing Li, A. Botello-Méndez, T. Hayashi, Bei Wang, A. Berkdemir, Qingzhen Hao, A. Elías, R. Cruz-Silva, H. Gutiérrez and 8 more. Scientific Reports, 2012
611 citations recorded by the source corpus.
Graphene is a two-dimensional network in which sp2-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 (N2AA). Scanning tunneling microscopy and spectroscopy (STM and STS) of NG revealed the presence of localized states in the conduction band induced by N2AA-doping, which was confirmed by ab initio calculations. Furthermore, we demonstrated for the first time that NG could be used to efficiently probe organic molecules via a highly improved graphene enhanced Raman scattering.
View Paper: https://www.semanticscholar.org/paper/a1ffd9907217bb783694c64588360fc2588a3529
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Citations in the corpus
- Evolution of Raman spectra in nitrogen doped graphene (2013, methodology): “[21] Lv R, Li Q, Botello-Méndez Andérs R, Hayashi T, Wang B, Berkdemir A, et al.”
- Application of carbon nanostructures toward SO2 and SO3 adsorption: a comparison between pristine graphene and N-doped graphene by DFT calculations (2016, background): “[25] explained the synthesis of large-area, highly crystalline monolayer NDG sheets.”