本文采用拉曼光谱研究Ｐｔ电极上欠电位沉积（亚）单原子层的Ｓｎ对甲醇氧化的影响，初步的结果表明，欠电位沉积Ｓｎ促进了Ｐｔ上甲醇的电催化氧化，与纯Ｐｔ电极体系相比较，作为表面毒性中间物的ＣＯ在较负电位下即可被氧化。本文对其可能的机理进行了初步的讨论 In this paper, Raman spectroscopy was used to study the effect of Sn on the under-potential deposition (sub) monolayers of Pt electrode on the oxidation of methanol. The preliminary results show that the under-potential deposition of Sn promotes the electrocatalytic oxidation of methanol on Pt, In contrast, CO, a surface-toxic intermediate, can be oxidized at a more negative potential. This article has carried on the preliminary discussion to its possible mechanism