Preparation of thin carbon nanotubes by catalytic pyrolysis on a support

Rakov, E. G.

doi:10.1070/rc2007v076n01abeh003641

Cited by 50 publications

(8 citation statements)

References 439 publications

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“…6 A wide set of experiments show that transition metals have an extremely high catalytic activity for C-C bond reorganization and formation of various carbon nanostructures. Among such experiments, there are numerous studies on synthesis of carbon nanotubes [7][8][9][10] and graphene, 11 transformation of single-walled nanotubes encapsulating fullerenes with Os complexes attached to their exterior 12 or ferrocenes 13 into double-walled nanotubes, nanoprotrusion formation on a single-walled nanotube encapsulating fullerenes with Re complexes attached to their exterior. 14 Nickel is one of the most active catalysts for growth [7][8][9][10][11] and controlled cutting 15 of carbon nanostructures.…”

Section: Introductionmentioning

confidence: 99%

Ni-Assisted Transformation of Graphene Flakes to Fullerenes

et al. 2012

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Transformation of graphene flakes to fullerenes assisted by Ni clusters is investigated using molecular dynamics simulations. The bond-order potential for Ni-C systems is developed. The potential reproduces the experimental and first-principles data on the physical properties of pure Ni as well as on relative energies of carbon species on Ni surfaces and in Ni bulk. The potential is applied for molecular dynamics simulations of the transformation of graphene flakes consisting of 50 -400 atoms with and without Ni clusters attached. Free fullerenes, fullerenes with Ni clusters attached from outside and fullerenes encapsulating Ni clusters (Ni endofullerenes) are observed to form in the presence of Ni clusters consisting of 5-80 atoms. Moreover, a new type of heterofullerenes with a patch made of a Ni cluster is found to form as an intermediate structure during the transformation. The Ni clusters are shownto reduce the activation energy for the graphene-fullerene transformation from 4.0 eV to 1.5 -1.9 eV,

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Section: Introductionmentioning

confidence: 99%

Ni-Assisted Transformation of Graphene Flakes to Fullerenes

et al. 2012

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“…Now many methods for preparation of CNT have been developed additionally to the electric-arc one. [38][39][40] These nanoparticles are specied by various types differing in the number of layers (single-wall carbon nanotubes (SWCNT) are graphene sheet rolled to cylinders, and multi-wall carbon nanotubes (MWCNT) are such cylinders (walls) inserted into one another), geometry, and chirality, which is determined by the angle of orientation of the graphene lattice relative to the tube axis. The orientation affects electric properties of CNT, which either possess metallic conduction or semiconducting properties.…”

Section: Fullerene Containing Polyurethane Compositesmentioning

confidence: 99%

Nanocomposites based on polyurethanes and carbon nanoparticles: preparation, properties and application

2013

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“…Among the known methods for producing carbon nanotubes (CNTs) [1,2], the electric arc and gas pyro lytic techniques are the most efficient and adaptable to streamlined production [3]. In the first case, nanostruc tures are grown in the arc discharge plasma in the inter electrode space in a highly rarefied inert gas atmosphere [4]; the anode and cathode material is carbon.…”

Section: Introductionmentioning

confidence: 99%

Technological characteristics of the processes of carbon nanostructure production by the methods of plasma-arc and gas-pyrolytic deposition

Makunin

Чеченин

Serdyukov

et al. 2012

Inorg. Mater. Appl. Res.

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The techniques of pyrolytic vapor deposition from acetylene and plasma arc vacuum deposition of graphite are used to prepare carbon nanotubes (CNTs). Graphite electrodes for plasma arc deposition are premodified with transition metals by electrochemical deposition from aqueous solutions of their salts. It is shown by SEM and AFM that the structure and morphology of the surface of CNT samples depends on the synthesis technique.

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Preparation of thin carbon nanotubes by catalytic pyrolysis on a support

Cited by 50 publications

References 439 publications

Ni-Assisted Transformation of Graphene Flakes to Fullerenes

Ni-Assisted Transformation of Graphene Flakes to Fullerenes

Nanocomposites based on polyurethanes and carbon nanoparticles: preparation, properties and application

Technological characteristics of the processes of carbon nanostructure production by the methods of plasma-arc and gas-pyrolytic deposition

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