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首页> 外文期刊>Catalysis Communications >Shape effect of Pt nanocrystals on electrocatalytic hydrogenation
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Shape effect of Pt nanocrystals on electrocatalytic hydrogenation

机译：铂纳米晶体的形状效应对电催化加氢的影响

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摘要

Shape-controlled platinum nanocrystals have various surface atomic structures depending on their shapes. We used cubic, cuboctahedra, and dendritic Pt nanoparticles to investigate the effect of shape on selectivity in electrocatalytic reactions. As a model reaction, we used electrocatalytic hydrogenation of 2-cyclohexenone. The surface-capping agents of the nanoparticles were removed by electrochemical activation, and subsequently each shape of nanoparticle exhibited characteristic H adsorption/desorption peaks consistent with the corresponding single-crystalline surface. 2-Cyclohexenone was electrocatalyt-ically hydrogenated to cyclohexanone and cyclohexanol, and the selectivity showed a dependence on the shape of the nanocrystals, resulting from the distinct surface atomic structures.
机译：形状受控的铂纳米晶体根据其形状具有各种表面原子结构。我们使用立方，立方八面体和树枝状Pt纳米颗粒来研究形状对电催化反应选择性的影响。作为模型反应，我们使用了2-环己烯酮的电催化加氢。纳米颗粒的表面封闭剂通过电化学活化去除，随后每种形状的纳米颗粒均表现出与相应的单晶表面一致的特征性H吸附/解吸峰。 2-环己烯酮被电催化氢化为环己酮和环己醇，选择性表现出对纳米晶体形状的依赖性，这是由于表面原子结构不同所致。

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