Solid-Solution Alloying of Immiscible Ru and Cu with Enhanced CO Oxidation Activity
Solid-Solution Alloying of Immiscible Ru and Cu with Enhanced CO Oxidation Activity
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DOI：
10.1021/jacs.7b01186
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发表时间：
2017-04-05
影响因子：
15
通讯作者：
Kitagawa, Hiroshi
中科院分区：
文献类型：
--
作者：
Huang, Bo;Kobayashi, Hirokazu;Kitagawa, Hiroshi
我们报道了新型 Ru 和 Cu 固溶体合金纳米颗粒 (NP)，它们甚至在体相熔点以上也完全不混溶。粉末 X 射线衍射、扫描透射电子显微镜和能量色散 X 射线测量表明，Ru 和 Cu 原子均匀分布在合金纳米粒子中。 Ru0.5Cu0.5 NPs 表现出比 fcc-Ru NPs 更高的 CO 氧化活性，fcc-Ru NPs 被称为最好的单金属 CO 氧化催化剂之一。
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. Ru0.5Cu0.5 NPs demonstrated higher CO oxidation activity than fcc-Ru NPs, which are known as one of the best monometallic CO oxidation catalysts.