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首页> 外文期刊>Electrocatalysis >Pd-Modified Shape-Controlled Pt Nanoparticles Towards Formic Acid Electrooxidation
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Pd-Modified Shape-Controlled Pt Nanoparticles Towards Formic Acid Electrooxidation

机译：Pd修饰的形状控制Pt纳米粒子对甲酸电氧化的影响

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摘要

Formic acid electrooxidation on Pd-modified Pt nanoparticles with well-characterised surfaces was studied. Polyoriented and preferential (100), (100)–(111) and (111) Pt nanoparticles were used as substrate on which Pd was electrochemically deposited. The incorporation of Pd gave rise to a remarkable enhancement towards formic acid electrooxidation, which was strongly dependent of the surface structure and shape of the Pt nanoparticles substrate in a similar way to that previously shown in fundamental studies with Pt single crystal electrodes. Among the Pt nanoparticles studied, these containing a (100) preferential orientation were clearly the most active towards formic acid electrooxidation both in voltammetric and chronoamperometric experiments. These findings clearly demonstrate that the use of adatom-modified preferentially oriented Pt nanoparticles is an interesting new route in the design of new and better electrocatalytic materials.
机译：研究了具有良好表征的Pd修饰的Pt纳米颗粒上的甲酸电氧化。多取向和优先的（100），（100）-（111）和（111）Pt纳米粒子被用作电化学沉积Pd的基质。 Pd的引入显着增强了甲酸的电氧化作用，这与Pt单晶电极基础研究中先前所显示的相似，在很大程度上取决于Pt纳米颗粒基质的表面结构和形状。在所研究的Pt纳米粒子中，无论是伏安法还是计时电流法实验，含有优先取向（100）的纳米粒子显然对甲酸电氧化活性最高。这些发现清楚地表明，在设计新的更好的电催化材料中，使用原子修饰的优先取向的Pt纳米粒子是一条有趣的新途径。

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