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Issue 20, 2014
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Formation of nickel–carbon heterofullerenes under electron irradiation

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Abstract

A way to produce new metal–carbon nanoobjects by transformation of a graphene flake with an attached transition metal cluster under electron irradiation is proposed. The transformation process is investigated by molecular dynamics simulations by the example of a graphene flake with a nickel cluster. The parameters of the nickel–carbon potential (I. V. Lebedeva et al., J. Phys. Chem. C, 2012, 116, 6572) are modified to improve the description of the balance between the fullerene elastic energy and graphene edge energies in this process. The metal–carbon nanoobjects formed are found to range from heterofullerenes with a metal patch to particles consisting of closed fullerene and metal clusters linked by chemical bonds. The atomic-scale transformation mechanism is revealed by the local structure analysis. The average time of formation of nanoobjects and their lifetime under electron irradiation are estimated for the experimental conditions of high-resolution transmission electron microscopy (HRTEM). The sequence of images of nanostructure evolution with time during its observation by HRTEM is also modelled. Furthermore, the possibility of batch production of studied metal–carbon nanoobjects and solids based on these nanoobjects is discussed.

Graphical abstract: Formation of nickel–carbon heterofullerenes under electron irradiation

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Publication details

The article was received on 01 Dec 2013, accepted on 19 Feb 2014 and first published on 19 Feb 2014


Article type: Paper
DOI: 10.1039/C3DT53385A
Citation: Dalton Trans., 2014,43, 7499-7513
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    Formation of nickel–carbon heterofullerenes under electron irradiation

    A. S. Sinitsa, I. V. Lebedeva, A. A. Knizhnik, A. M. Popov, S. T. Skowron and E. Bichoutskaia, Dalton Trans., 2014, 43, 7499
    DOI: 10.1039/C3DT53385A

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