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Issue 12, 2019
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Vanadium(V) oxide clusters synthesized by sublimation from bulk under fully inert conditions

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Abstract

Oxide nanoparticles in the size range of a few nanometers are typically synthesized in solution or via laser ablation techniques, which open numerous channels for structural change via chemical reactions or fragmentation processes. In this work, neutral vanadium oxide nanoparticles are instead synthesized by sublimation from bulk in combination with a pickup by superfluid helium droplets. Mass spectroscopy measurements clearly demonstrate the preservation of the bulk stoichiometric ratio of vanadium to oxygen in He-grown nanoparticles, indicating a tendency towards tetrahedral coordination of the vanadium centers in finite geometries. This unexpected finding opens up new possibilities for a combined on-the-fly synthesis of nanoparticles consisting of metal and metal-oxide layers. In comparison to mass spectra obtained via direct ionization of vanadium oxide in an effusive beam, where strong fragmentation occurred, we observe a clear preference for (V2O5)n oligomers with even n inside the He nanodroplets, which is further investigated and explained using the electronic structure theory.

Graphical abstract: Vanadium(V) oxide clusters synthesized by sublimation from bulk under fully inert conditions

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Publication details

The article was received on 20 Dec 2018, accepted on 23 Feb 2019 and first published on 25 Feb 2019


Article type: Edge Article
DOI: 10.1039/C8SC05699D
Chem. Sci., 2019,10, 3473-3480
  • Open access: Creative Commons BY license
    All publication charges for this article have been paid for by the Royal Society of Chemistry

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    Vanadium(V) oxide clusters synthesized by sublimation from bulk under fully inert conditions

    M. Lasserus, M. Schnedlitz, R. Messner, F. Lackner, W. E. Ernst and A. W. Hauser, Chem. Sci., 2019, 10, 3473
    DOI: 10.1039/C8SC05699D

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