Issue 5, 2016

The formation of the smallest fullerene-like carbon cages on metal surfaces

Abstract

The nucleation and growth of carbon on catalytically active metal surfaces is one of the most important techniques to produce nanomaterials such as graphene or nanotubes. Here it is shown by in situ electron microscopy that fullerene-like spherical clusters with diameters down to 0.4 nm and thus much smaller than C60 grow in a polymerized state on Co, Fe, or Ru surfaces. The cages appear on the surface of metallic islands in contact with graphene under heating to at least 650 °C and successively cooling to less than 500 °C. The formation of the small cages is explained by the segregation of carbon on a supersaturated metal, driven by kinetics. First principles energy calculations show that the clusters polymerize and can be attached to defects in graphene. Under compression, the polymerized cages appear in a crystalline structure.

Graphical abstract: The formation of the smallest fullerene-like carbon cages on metal surfaces

Supplementary files

Article information

Article type
Communication
Submitted
20 nóv. 2015
Accepted
11 jan. 2016
First published
12 jan. 2016

Nanoscale, 2016,8, 2561-2567

The formation of the smallest fullerene-like carbon cages on metal surfaces

F. Ben Romdhane, J. A. Rodríguez-Manzo, A. Andrieux-Ledier, F. Fossard, A. Hallal, L. Magaud, J. Coraux, A. Loiseau and F. Banhart, Nanoscale, 2016, 8, 2561 DOI: 10.1039/C5NR08212A

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