The activation pathway of CO electro-oxidation at low potentials is frequently favored on a catalyst with surface defects. Here, we report a discovery in which an initial long-range substrate structure is required for the activation of an unusual CO pre-oxidation reaction pathway on Pt(111) surfaces which have been flame annealed and then cooled in a CO atmosphere. Different to current understanding about the oxidation of CO on Pt, the activation of this reaction pathway is inhibited as the (111) planes become defect-rich.

中文翻译：

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Pt（111）电极上异常CO预氧化中初始远距离衬底结构的要求

在具有表面缺陷的催化剂上，低电势下的CO电氧化活化途径通常受到青睐。在这里，我们报告一个发现，其中初始的远程衬底结构是激活Pt（111）表面上的异常CO预氧化反应路径所必需的，该Pt（111）表面已进行火焰退火，然后在CO气氛中冷却。与当前关于CO在Pt上氧化的理解不同，该反应途径的激活由于（111）平面变得富含缺陷而受到抑制。