Journal
SCIENCE
Volume 359, Issue 6381, Pages 1243-1246Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aan8782
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Funding
- EU [654360]
- Italian Ministry of Foreign Affairs [PGR00190]
- University of Trieste through the program Finanziamento di Ateneo per progetti di ricerca scientifica-FRA
- Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET)
- Fondo para la Investigacion Cientifica y Tecnologica (FONCyT) [PICT-2015-2191]
- Secretaria de Ciencia y Tecnologia (SeCyT)-Universidad Nacional de Cordoba (UNC) (Argentina)
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Single adatoms are expected to participate in many processes occurring at solid surfaces, such as the growth of graphene on metals. We demonstrate, both experimentally and theoretically, the catalytic role played by single metal adatoms during the technologically relevant process of graphene growth on nickel (Ni). The catalytic action of individual Ni atoms at the edges of a growing graphene flake was directly captured by scanning tunneling microscopy imaging at the millisecond time scale, while force field molecular dynamics and density functional theory calculations rationalize the experimental observations. Our results unveil the mechanism governing the activity of a single-atom catalyst at work.
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