Solid-Solution Alloying of Immiscible Ru and Cu with Enhanced CO Oxidation Activity.
We report on novel solid-solution alloy nanoparticles (NPs) of Ru and Cu that are completely immiscible even above melting point in bulk phase. Powder X-ray diffraction, scanning transmission electron microscopy, and energy-dispersive X-ray measurements demonstrated that Ru and Cu atoms were homogeneously distributed in the alloy NPs. Ru0.5Cu0.5NPs demonstrated higher CO oxidation activity than fcc-Ru NPs, which are known as one of the best monometallic CO oxidation catalysts.
Division of Chemistry, Graduate School of Science, Kyoto University , Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.
Bo
B
Huang
Division of Chemistry, Graduate School of Science, Kyoto University , Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.
Hirokazu
H
Kobayashi
Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University , Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.|Kyushu University and the Ultramicroscopy Research Center , Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
Tomokazu
T
Yamamoto
Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University , Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.|Kyushu University and the Ultramicroscopy Research Center , Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.|INAMORI Frontier Research Center, Kyushu University , Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
Syo
S
Matsumura
Department of Applied Chemistry, Faculty of Engineering, Oita University , 700 Dannoharu, Oita 870-1192, Japan.
Yoshihide
Y
Nishida
Department of Applied Chemistry, Faculty of Engineering, Oita University , 700 Dannoharu, Oita 870-1192, Japan.|Elements Strategy Initiative for Catalysts and Batteries, Kyoto University , 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto 615-8245, Japan.
Katsutoshi
K
Sato
Department of Applied Chemistry, Faculty of Engineering, Oita University , 700 Dannoharu, Oita 870-1192, Japan.
Katsutoshi
K
Nagaoka
Japan Synchrotron Radiation Research Insitute (JASRI) , SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan.
Shogo
S
Kawaguchi
Department of Physical Science, Graduate School of Science, Osaka Prefecture University , Sakai, Osaka 599-8531, Japan.
Yoshiki
Y
Kubota
Division of Chemistry, Graduate School of Science, Kyoto University , Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.|INAMORI Frontier Research Center, Kyushu University , Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.|Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501, Japan.
Hiroshi
0000-0001-6955-3015
H
Kitagawa