Scalable synthesis and functionalization of cobalt nanoparticles for versatile magnetic separation and metal adsorption

Pipsa Mattila, Hanna Heinonen, Kalle Loimula, J. Forsman, L-S. Johansson, U. Tapper, Riitta Mahlberg, H-P. Hentze, Ari Auvinen, Roberto Milani

    Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

    2 Sitaatiot (Scopus)

    Abstrakti

    Magnetic cobalt nanoparticles coated with a thin carbon shell were produced by means of a scalable method based on hydrogen reduction synthesis. The presence of oxidized groups on the surface of the carbon shell enabled the reaction with alkoxysilanes bearing amino and thiol reactive functions under mild conditions, and therefore the formation of a thin functional silane layer which holds the potential for further modification in consideration of specific applications, e.g., in the separation and catalysis fields. The magnetic nanoparticles bearing surface thiol groups were also used in metal adsorption tests. These nanoparticles could efficiently adsorb not only gold from a chloride salt aqueous solution, but also several other metals when incubated in a thiocyanate-leached solution obtained from crushed printed circuit boards. The combination of a scalable production method with a simple and versatile surface modification strategy opens up a wide array of potential industrial applications in the fields of separation, sensing, and biomedical devices.
    AlkuperäiskieliEnglanti
    Artikkeli2606
    JulkaisuJournal of Nanoparticle Research
    Vuosikerta16
    DOI - pysyväislinkit
    TilaJulkaistu - 2014
    OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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