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A Simple and Effective Way to Overcome Carbon Monoxide Poisoning of Platinum Surfaces in Direct Formic Acid Fuel Cells

机译:一种简单有效的方法来克服直接甲酸燃料电池中铂表面的一氧化碳中毒

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A glassy carbon (GC) electrode modified with multi-walled carbon nanotubes (MWCNTs) and platinumnanoparticles (PtNPs), Pt/MWCNTs-GC, has been introduced for formic acid electro-oxidation (FAO).A similar loading of PtNPs has been conserved for a proper comparison between the Pt/MWCNTs-GCand the unmodified Pt/GC electrodes. The modification with MWCNTs could enhance the loading ofPtNPs onto the GC electrode in a way that minimizes its agglomeration and increases its dispersion inthe CNTs network. This not only increases the surface area exposed to the reaction but also interruptsthe contiguity of the Pt active sites minimizing the adsorption of the poisoning CO. As a result, both of catalyst activity and to determine its morphology.
机译:引入了用多壁碳纳米管(MWCNT)和铂纳米颗粒(PtNPs)修饰的玻璃碳(GC)电极Pt / MWCNTs-GC进行甲酸电氧化(FAO).PtNPs的负载量相似为了正确比较Pt / MWCNTs-GC和未修饰的Pt / GC电极。 MWCNTs的修饰可以最大程度地减少PtNPs的团聚并增加其在CNTs网络中的分散度,从而增加PtNPs在GC电极上的负载。这不仅增加了暴露于反应的表面积,而且中断了Pt活性位点的连续性,从而使中毒CO的吸附最小化。结果,既提高了催化剂的活性,又确定了催化剂的形态。

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