Surfactant-free syntheses and pair distribution function analysis of osmium nanoparticles
Autor: | Tiffany L. Kinnibrugh, Jonathan Quinson, Susan Cooper, Rebecca K. Pittkowski, Mikkel Juelsholt, Kirsten M. Ø. Jensen, Emil T. S. Kjær, Luise Theil Kuhn, Baiyu Wang, María Escudero-Escribano, Søren Bredmose Simonsen |
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Rok vydání: | 2022 |
Předmět: |
Pair distribution function
Surfactant-free synthesis Reducing agent Nanoparticle chemistry.chemical_element Metal nanoparticles General Physics and Astronomy Osmium Catalysis Nanomaterials Solvent Colloid chemistry.chemical_compound Chemical engineering chemistry General Materials Science Methanol Electrical and Electronic Engineering |
Zdroj: | Juelsholt, M, Quinson, J, Kjær, E T S, Wang, B, Pittkowski, R, Cooper, S R, Kinnibrugh, T L, Simonsen, S B, Kuhn, L T, Escudero-Escribano, M & Jensen, K M Ø 2022, ' Surfactant-free syntheses and pair distribution function analysis of osmium nanoparticles ', Beilstein Journal of Nanotechnology, vol. 13, pp. 230-235 . https://doi.org/10.3762/bjnano.13.17 Juelsholt, M, Quinson, J, Kjær, E T S, Wang, B, Pittkowski, R, Cooper, S R, Kinnibrugh, T L, Simonsen, S B, Theil Kuhn, L, Escudero-escribano, M & Jensen, K M Ø 2022, ' Surfactant-free syntheses and pair distribution function analysis of osmium nanoparticles ', Beilstein Journal of Nanotechnology, vol. 13, pp. 230-235 . https://doi.org/10.3762/bjnano.13.17 Beilstein Journal of Nanotechnoly |
ISSN: | 2190-4286 |
Popis: | A surfactant-free synthesis of precious metal nanoparticles performed in low boiling point solvents and in alkaline conditions has been reported recently. This strategy presents several advantages over alternative colloidal syntheses. The resulting nanoparticles are readily relevant for applications like catalysis and the synthetic process is compatible with large scale production. Alkaline mono-alcohols are here investigated as solvent and reducing agents to obtain colloidal Os nanoparticles by this low temperature (< 100 °C) surfactant-free synthesis. The effect of precursor (OsCl3 or H2OsCl6), precursor concentration (up to 100 mM), solvent (methanol or ethanol), presence or absence of base (NaOH) and addition of water (0 to 100 v.%) on the resulting nanomaterials is discussed. It is fond that no base is required to obtain Os nanoparticles as opposed to the case of Pt NPs for instance. The robustness of the synthesis for concentration of precursor up to 100 mM allows to perform X-ray total scattering with pair distribution function (PDF) analysis that shows that the 1-2 nm hcp NPs forms from chain-like [OsOxCly]-complexes. |
Databáze: | OpenAIRE |
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