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Issue 19, 2017
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Core@shell, Au@TiOx nanoparticles by gas phase synthesis

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Herein, gas phase synthesis and characterization of multifunctional core@shell, Au@TiOx nanoparticles have been reported. The nanoparticles were produced via a one-step process using a multiple-ion cluster source under a controlled environment that guaranteed the purity of the nanoparticles. The growth of the Au cores (6 nm diameter) is stopped when they pass through the Ti plasma where they are covered by an ultra-thin (1 nm thick) and homogeneous titanium shell that is oxidized in-flight before the soft-landing of the nanoparticles. The Au cores were found to be highly crystalline with icosahedral (44%) and decahedral (66%) structures, whereas the shell, mainly composed of TiO2 (79%), was not ordered. The highly electrical insulating behaviour of the titanium oxide shell was confirmed by the charging effect produced during X-ray photoemission spectroscopy.

Graphical abstract: Core@shell, Au@TiOx nanoparticles by gas phase synthesis

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The article was received on 15 Feb 2017, accepted on 06 Apr 2017 and first published on 10 Apr 2017

Article type: Paper
DOI: 10.1039/C7NR01148B
Citation: Nanoscale, 2017,9, 6463-6470
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    Core@shell, Au@TiOx nanoparticles by gas phase synthesis

    L. Martínez, A. Mayoral, M. Espiñeira, E. Roman, F. J. Palomares and Y. Huttel, Nanoscale, 2017, 9, 6463
    DOI: 10.1039/C7NR01148B

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