Large-scale preparation of carbon-encapsulated cobalt nanoparticles by the catalytic method
Liu, Bing Hai
Zhong, Z. Y.
White, Timothy John
Lin, J. Y.
Date of Issue2002
School of Materials Science and Engineering
With strategical selection of the water-soluble sodium chloride (NaCl) as the supporting material, we realized large-scale production of carbon-encapsulated cobalt nanoparticles with a productivity of almost 100%. The products can be fully separated from the supporting materials by simple washing process. When NaCl, NaF and Al2O3 were used as supporting materials, the morphologies of the carbon products changed from carbon-encapsulated magnetic nano-particles (CEMNs) to an intermediate state (quasi-nanocages) between CEMNs and carbon nanotubes (CNTs), and then to CNTs, respectively. NaCl shows strong inhibiting effects on the growth of CNTs, favoring the formation of CEMNs.
Chemical physics letters
© 2002 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Chemical Physics Letters, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1016/S0009-2614(02)00592-4 ]