Solid-Solution Alloying of Immiscible Ru and Cu with Enhanced CO Oxidation Activity

作者：Bo Huang, Hirokazu Kobayashi, Tomokazu Yamamoto, Syo Matsumura, Yoshihide Nishida, Katsutoshi Sato, Katsutoshi Nagaoka, Shogo Kawaguchi, Yoshiki Kubota, Hiroshi Kitagawa · 发表于：Journal of the American Chemical Society · 年份：2017 · DOI：10.1021/jacs.7b01186 · 被引用次数：122 · 研究领域：Electrocatalysts for Energy Conversion、Catalytic Processes in Materials Science、Nanomaterials for catalytic reactions

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. Ru 0.5 Cu 0.5 NPs demonstrated higher CO oxidation activity than fcc-Ru NPs, which are known as one of the best monometallic CO oxidation catalysts.