Selective control of fcc and hcp crystal structures in Au–Ru solid-solution alloy nanoparticles

Quan Zhang, Kohei Kusada (), Dongshuang Wu, Tomokazu Yamamoto, Takaaki Toriyama, Syo Matsumura, Shogo Kawaguchi, Yoshiki Kubota and Hiroshi Kitagawa ()
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Quan Zhang: Kyoto University
Kohei Kusada: Kyoto University
Dongshuang Wu: Kyoto University
Tomokazu Yamamoto: Kyushu University
Takaaki Toriyama: Kyushu University
Syo Matsumura: Kyushu University
Shogo Kawaguchi: Japan Synchrotron Radiation Research Insitute (JASRI)
Yoshiki Kubota: Osaka Prefecture University
Hiroshi Kitagawa: Kyoto University

Nature Communications, 2018, vol. 9, issue 1, 1-9

Abstract: Abstract Binary solid-solution alloys generally adopt one of three principal crystal lattices—body-centred cubic (bcc), hexagonal close-packed (hcp) or face-centred cubic (fcc) structures—in which the structure is dominated by constituent elements and compositions. Therefore, it is a significant challenge to selectively control the crystal structure in alloys with a certain composition. Here, we propose an approach for the selective control of the crystal structure in solid-solution alloys by using a chemical reduction method. By precisely tuning the reduction speed of the metal precursors, we selectively control the crystal structure of alloy nanoparticles, and are able to selectively synthesize fcc and hcp AuRu3 alloy nanoparticles at ambient conditions. This approach enables us to design alloy nanomaterials with the desired crystal structures to create innovative chemical and physical properties.

Date: 2018
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DOI: 10.1038/s41467-018-02933-6

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