Nanoporous (np) Au‐Cu‐Pt thin‐film catalyst with fine structure and tunable composition is synthesized using a facile method involving successive electrodeposition and de‐alloying. The catalyst’s structure, electronic state, elemental content, and active surface area along with the Pt fraction of it, are characterized and/or determined before and after methanol oxidation reaction (MOR) tests by electrochemical and ultrahigh vacuum analytical routines. The prepared np Au‐Cu‐(8% in the precursor alloy)Pt catalyst exhibits outstanding mass and specific activity toward MOR, which is approximately six‐ and nine‐times, respectively, higher than the activity of a commercial Pt/C(40%) counterpart. A negative 75 mV onset potential shift upon MOR anodic scan on the np Au‐Cu‐(8%)Pt catalyst in comparison with Pt/C(40%) corroborates its higher catalytic activity. Furthermore, the alloy catalyst demonstrates better durability than the Pt/C(40%) counterpart in a three‐hour constant potential test and exhibits full post‐factum recovery of its cycling activity. In addition, it retains more than 60% of its original activity after 3000 cycles of an accelerated degradation test. The outstanding performance is attributed to the specific catalyst’s structure leading to a d‐band upshift along with unique constituent interplay.

中文翻译：

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纳米多孔Au-Cu-Pt合金的简便合成，可作为甲醇氧化反应的优良催化剂

纳米多孔（np）Au-Cu-Pt薄膜催化剂具有良好的结构和可调的组成，是使用一种简便的方法合成的，该方法涉及连续的电沉积和脱合金。催化剂的结构，电子态，元素含量和活性表面积以及Pt分数，通过电化学和超高真空分析程序在甲醇氧化反应（MOR）测试之前和之后进行表征和/或确定。制备的np Au-Cu-（在前体合金中占8％）Pt催化剂对MOR的质量和比活度均非常出色，分别比市售Pt / C的活度高出六倍和九倍（40 ％）对应。与Pt / C（40％）相比，np Au-Cu-（8％）Pt催化剂在MOR阳极扫描时出现75 mV的起始电位负迁移，证实了其较高的催化活性。此外，在三个小时的恒电位测试中，该合金催化剂显示出比Pt / C（40％）同类产品更好的耐久性，并在生产后恢复了其循环活性。此外，经过3000次加速降解测试后，它保留了其原始活性的60％以上。出色的性能归因于特定的催化剂结构，导致了广告波段的上移以及独特的成分相互作用。经过3000次加速降解测试后，它保留了其原始活性的60％以上。出色的性能归因于特定的催化剂结构，导致了广告波段的上移以及独特的成分相互作用。经过3000次加速降解测试后，它保留了其原始活性的60％以上。出色的性能归因于特定的催化剂结构，导致了广告波段的上移以及独特的成分相互作用。