Electrooxidation of methanol on PtMyOx (M = Sn, Mo, Os or W) electrodes
Electrooxidation of methanol on PtMyOx (M = Sn, Mo, Os or W) electrodes
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DOI：
10.1016/j.elecom.2005.04.024
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发表时间：
2005-07
影响因子：
5.4
通讯作者：
Marlene Barroso de Oliveira;L. Profeti;P. Olivi
中科院分区：
文献类型：
--
作者：
Marlene Barroso de Oliveira;L. Profeti;P. Olivi
本文研究了甲醇在PtMyOx（M=Sn，Mo，Os或W）电极上的电氧化。在钛板上制备了PtMyOx材料，并用SEM和EDX对其进行了表征。电极呈现出与标称电极非常相似的组成，除了含有Os的电极，其呈现出高的Os损失。用循环伏安法和计时电流法研究了该电极对甲醇电氧化的催化活性。在其组成中含有锡的电极呈现出最高的电活性。活性增强的可能机制进行了讨论。
In this paper, we have studied the electrooxidation of methanol on PtMyOx(M=Sn, Mo, Os or W) electrodes prepared by the decomposition of polymeric precursors. The PtMyOxmaterials were prepared on Ti plates and were characterized by SEM and EDX. The electrodes presented compositions very similar to the nominal ones, except for the electrodes containing Os, which presented high Os loss. The electrodes catalytic activity in the electrooxidation of methanol was studied by cyclic voltammetry and chronoamperometry. The electrodes containing tin in their compositions presented the highest electroactivity. The possible mechanisms involved in activity enhancement are discussed.