To boost the electrocatalytic activity of metal nanoparticles, it is important to rationally design the composition and surface atomic structure, and develop efficient synthesis protocols. Herein, a facile one‐pot self‐templated method for preparing PtPdAg hollow nanodendrites (HNDs) is deployed. These HNDs possess rich atomic steps and grain boundaries, leading to evidently higher catalytic activity in methanol electrooxidation reaction than commercial Pt black and solid particles with smooth surfaces. From control experiments and density functional theory calculations, it is proven that the tri‐metallic HND has a stronger electronic coupling as compared with the PtPd and PtAg nanoparticles. As a result, the PtPdAg HNDs show high anti‐poison capability and catalytic activity for methanol oxidation reaction. This study provides a new strategy for controllable synthesis of hollow alloy nanocatalysts with high efficiency.

中文翻译：

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PtPdAg空心纳米树枝状晶体：无模板合成和高电催化活性，用于甲醇氧化反应

为了提高金属纳米粒子的电催化活性，重要的是合理设计组成和表面原子结构，并开发有效的合成方案。在本文中，部署了一种简便的单罐自模板方法来制备PtPdAg中空纳米枝晶（HND）。这些HND具有丰富的原子台阶和晶界，因此与市售的Pt黑和具有光滑表面的固体颗粒相比，在甲醇电氧化反应中具有明显更高的催化活性。通过控制实验和密度泛函理论计算，证明与PtPd和PtAg纳米粒子相比，三金属HND具有更强的电子耦合。因此，PtPdAg HNDs具有很高的抗毒能力和对甲醇氧化反应的催化活性。