Nitrogen Doped Graphene Quantum Dots as Possible Substrates to Stabilize   Planar Conformer of Au 20 Over its Tetrahedral Conformer: A Systematic DFT   Study
  Utilizing the strengths of nitrogen doped graphene quantum dot (N-GQD) as a substrate, here in, we have shown that one can stabilize the catalytically more active planar Au 20 (P-Au 20 ) compared to the thermodynamically more stable tetrahedral structure (T-Au 20 ) on an N-GQD. Clearly, this simple route avoids the usage of traditional transition metal oxide substrates which have been suggested and used for stabilizing the planar structure for a long time. Considering the experimental success in the synthesis of N-GQDs and in the stabilization of Au nanoparticles on N-doped graphene, we expect our proposed method to stabilize planar structure will be realized experimentally and will be useful for industrial level applications. 
Sharma SRKC Yamijala, Arkamita Bandyopadhyay, and Swapan K Pati
cond-mat.mtrl-sci