Issue 19, 2017

Core@shell, Au@TiOx nanoparticles by gas phase synthesis

Abstract

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

Supplementary files

Article information

Article type
Paper
Submitted
15 Feb 2017
Accepted
06 Apr 2017
First published
10 Apr 2017

Nanoscale, 2017,9, 6463-6470

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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