Crystalline to amorphous transformation in solid-solution alloy nanoparticles induced by boron doping

Keigo Kobayashi; Kohei Kusada; Dongshuang Wu; Naoki Ogiwara; Hirokazu Kobayashi; Mitsutaka Haruta; Hiroki Kurata; Satoshi Hiroi; Okkyun Seo; Chulho Song; Yanna Chen; Jaemyung Kim; Akhil Tayal; Osami Sakata; Koji Ohara; Tetsuo Honma; Hiroshi Kitagawa

doi:10.1039/D0CC05418F

Crystalline to amorphous transformation in solid-solution alloy nanoparticles induced by boron doping†

Keigo Kobayashi,^a Kohei Kusada,

^a Dongshuang Wu,

^a Naoki Ogiwara,

‡^a Hirokazu Kobayashi,*^ab Mitsutaka Haruta,^c Hiroki Kurata,^c Satoshi Hiroi,^de Okkyun Seo,^df Chulho Song,^f Yanna Chen,^df Jaemyung Kim,^f Akhil Tayal,

^f Osami Sakata,

^defg Koji Ohara,^e Tetsuo Honma^e and Hiroshi Kitagawa

*^ahi

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* Corresponding authors

^a Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
E-mail: hirokazukobayashi6@gmail.com, kitagawa@kuchem.kyoto-u.ac.jp

^b Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan

^c Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan

^d Synchrotron X-ray Group, Research Center for Advanced Measurement and Characterization, National Institute for Materials Science (NIMS), 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan

^e Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan

^f Synchrotron X-ray Station at SPring-8, NIMS, 1-1-1 Kouto, Sayo-gun, Hyogo 679-5148, Japan

^g Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Yokohama 226-8502, Japan

^h INAMORI Frontier Research Center, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan

ⁱ Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan

Abstract

We synthesized a palladium–ruthenium–boron (Pd–Ru–B) solid-solution ternary alloy. Elemental mappings confirmed successful alloying of B with Pd–Ru body without changing the particle sizes, demonstrating the first discovery of this ternary alloy. Pair distribution function analysis revealed a drastic decrease in atomic correlation in Pd–Ru nanoparticles by B doping. This result gives the first example of structural transformation from crystalline to amorphous in solid-solution alloy nanoparticles induced by the doping of light elements.

Chemical Communications

Crystalline to amorphous transformation in solid-solution alloy nanoparticles induced by boron doping†

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Crystalline to amorphous transformation in solid-solution alloy nanoparticles induced by boron doping

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