Clustering and Solvation of Cobalt Nanostructures in Dimethyl Sulfoxide

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J. N. Duggan and C. B. Roberts, “Clustering and Solvation of Cobalt Nanostructures in Dimethyl Sulfoxide,” Ind. Eng. Chem. Res., vol. 53, no. 41, pp. 15889–15895, Oct. 2014.

Type Journal Article
Author Jennifer N. Duggan
Author Christopher B. Roberts
Volume 53
Issue 41
Pages 15889-15895
Publication Industrial & Engineering Chemistry Research
ISSN 0888-5885
Date October 15, 2014
Journal Abbr Ind. Eng. Chem. Res.
DOI 10.1021/ie500909f
Abstract It has been reported that the molecule dimethyl sulfoxide (DMSO) can be effectively utilized as both a stabilizing ligand and a solvent during cobalt (Co) nanoparticle synthesis. Accordingly, stabilization of the nanostructures is provided by electrostatic contributions from the molecular sulfoxide components. This paper reports the synthesis of Co nanoparticles and nanoclusters (i.e., nanoparticle aggregates) of various sizes in DMSO at 25, 50, and 150 °C. This study illustrates that the size of the resulting Co nanoclusters is a direct function of the synthesis temperature. Moreover, these Co nanoclusters are composed of smaller Co nanoparticles that preferentially aggregate at increased temperatures during synthesis, where the largest nanoclusters are constructed at the highest synthesis temperatures. Furthermore, it is demonstrated that the smaller Co nanoparticles that makeup the larger Co nanoclusters can be liberated in solution upon the addition of various cosolvents.



  • Cobalt
  • Dimethyl sulfoxide
  • Nanomaterials

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