Jump to main content
Jump to site search

Issue 34, 2007
Previous Article Next Article

Synthesis and characterization of nickel nanoparticles dispersed in imidazolium ionic liquids

Author affiliations

Abstract

The diameter and size-distribution of Ni nanoparticles prepared by the decomposition of [bis(1,5-cyclooctadiene)nickel(0)] organometallic precursor dissolved in 1-alkyl-3-methylimidazolium N-bis(trifluoromethanesulfonyl) amide ionic liquids depend on the length of the alkyl side-chain of the imidazolium ring. The increase of the organization range order of the ionic liquid that increases with that of the alkyl side-chain (from n-butyl to n-hexadecyl) induces the formation of nanoparticles with a smaller diameter and size-distribution. The cubic fcc Ni nanoparticles with 4.9 ± 0.9 to 5.9 ± 1.4 nm in mean diameter and monomodal size-distribution thus prepared are probably composed of a small cap layer of NiO around a core of Ni metal. The contribution of the oxide layer also depends on the medium i.e. the metal oxide ratio increases in salts containing four to eight carbons on their side-chains and then decreases as the number of carbons increases. The Ni nanoparticles dispersed in the ionic liquids are active catalysts for the hydrogenation of olefins under relatively mild reaction conditions.

Graphical abstract: Synthesis and characterization of nickel nanoparticles dispersed in imidazolium ionic liquids

Back to tab navigation

Publication details

The article was received on 15 Mar 2007, accepted on 27 Jun 2007 and first published on 09 Jul 2007


Article type: Paper
DOI: 10.1039/B703979D
Citation: Phys. Chem. Chem. Phys., 2007,9, 4814-4821
  •   Request permissions

    Synthesis and characterization of nickel nanoparticles dispersed in imidazolium ionic liquids

    P. Migowski, G. Machado, S. R. Texeira, M. C. M. Alves, J. Morais, A. Traverse and J. Dupont, Phys. Chem. Chem. Phys., 2007, 9, 4814
    DOI: 10.1039/B703979D

Search articles by author

Spotlight

Advertisements