Facilely tuning the nanocrystals with fascinating morphology represents a versatile approach to fabricate the ideal nanocatalysts with both enhanced catalytic activity and stability toward liquid fuel electrooxidation due to their abundant surface active areas, facilitated charger transfer, as well as the synergistic effects. However, up till now, the rational fabrication of trimetallic nanocrystals with both fascinating morphology and tunable compositions remain a challenge. To this end, we herein demonstrate a facile wet-chemical method to successfully synthesize the unique pinecone-like Pd–Au–Ag nanocatalysts with the assistance of cetyltrimethylammonium bromide (CTAB). A series of electrochemical measurements have revealed that the resulted pinecone-like Pd–Au–Ag nanocatalysts exhibited unprecedentedly high catalytic activity with the mass and specific activities of 7150.8 mA/mg and 18.2 mA/cm² toward ethylene glycol oxidation, 7.25 and 2.14 times higher than that of commercial Pd/C (986.4 mA/mg and 8.5 mA/cm²), respectively. Our efforts in this work may open up a new way for maximizing the electrocatalytic performances of catalysts by facilely designing and adjusting their morphologies and we also trust that the electrocatalysts fabricated in this work can be well applied as potential anodic catalysts and beyond.

通过令人着迷的形态轻松调整纳米晶体代表了一种通用的方法，可以制造理想的纳米催化剂，由于其丰富的表面活性区域，促进的电荷转移以及协同作用，因此具有增强的催化活性和对液体燃料电氧化的稳定性。然而，到目前为止，合理制造具有令人着迷的形态和可调谐组成的三金属纳米晶体仍然是一个挑战。为此，我们在本文中演示了一种简便的湿化学方法，该方法可在十六烷基三甲基溴化铵（CTAB）的帮助下成功合成独特的松果状Pd-Au-Ag纳米催化剂。²对乙二醇氧化，分别比市售Pd / C（986.4 mA / mg和8.5 mA / cm ²）高7.25和2.14倍。我们在这项工作中的努力可能会通过方便地设计和调整其形态，为最大化催化剂的电催化性能开辟一条新途径，我们也相信，在这项工作中制造的电催化剂可以很好地用作潜在的阳极催化剂及其他。