首页> 外文期刊>Chemistry: A European journal >Pt_3Co Concave Nanocubes: Synthesis, Formation Understanding, and Enhanced Catalytic Activity toward Hydrogenation of Styrene
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Pt_3Co Concave Nanocubes: Synthesis, Formation Understanding, and Enhanced Catalytic Activity toward Hydrogenation of Styrene

机译:Pt_3Co凹形纳米立方体:合成,形成理解和增强的氢化苯乙烯催化活性。

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摘要

We report a facile synthesis route to prepare highquality Pt_3Co nanocubes with a concave structure, and further demonstrate that these concave Pt_3Co nanocubes are terminated with high-index crystal facets. The success of this preparation is highly dependent on an appropriate nucleation process with a successively anisotropic overgrowth and a preservation of the resultant high-index planes by control binding of oleyl-amine/oleic acid with a fine-tuned composition. Using a hydrogenation of styrene as a model reaction, these Pt_3Co concave nanocubes as a new class of nanocatalysts with more open structure and active atomic sites located on their high-index crystallographic planes exhibit an enhanced catalytic activity in comparison with low-indexed surface terminated Pt_3Co nanocubes in similar size.
机译:我们报告了一种容易的合成路线,以制备具有凹形结构的高质量Pt_3Co纳米立方体,并进一步证明这些凹形Pt_3Co纳米立方体以高折射率晶面终止。该制备方法的成功高度依赖于适当的成核过程,该过程具有连续的各向异性过度生长,以及通过控制油酸胺/油酸与微调的组合物的结合来保持所得的高折射率平面。使用苯乙烯氢化作为模型反应,这些Pt_3Co凹形纳米立方作为新型纳米催化剂,其低指数表面终止的Pt_3Co与具有更高开放结构和位于高指数晶体平面上的活性原子位点相比,具有增强的催化活性。大小相似的纳米立方体。

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