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A competent simultaneously co-electrodeposited Pt-MnOx nanocatalyst for enhanced formic acid electro-oxidation
Journal of the Taiwan Institute of Chemical Engineers ( IF 5.7 ) Pub Date : 2018-11-25 , DOI: 10.1016/j.jtice.2018.10.026
Yaser M. Asal , Islam M. Al-Akraa , Ahmad M. Mohammad , Mohamed S. El-Deab

In this paper, a new methodology replacing the typical sequential layer-by-layer immobilization, i.e., simultaneous co-electrodeposition protocol is proven eminent for assembling efficient binary nanoelectrocatalysts for formic acid (FA) electro-oxidation (FAO). This strategy is successful to integrate homogeneously Pt nanoparticles (nano-Pt; essential component for FA adsorption/oxidation) with manganese oxide nanowires (nano-MnOx; a CO poisoning alleviator) in a single blend avoiding the poisoning CO adsorption at the catalyst surface. The molar ratio of the catalyst's ingredients (Pt:Mn) in the deposition bath is critical in identifying the catalyst's composition of the prepared binary catalyst and thus, a molar ratio of (1:8) is optimum yielding the highest catalytic activity. It is believed that adjusting the catalyst's composition could preferably act against the adsorption of poisoning CO intermediate and/or providing an electronic support to the desired (low over potential) direct dehydrogenation pathway of FAO to CO2.



中文翻译:

可以同时共电沉积的增强Pt-MnOx纳米催化剂,用于增强甲酸的电氧化

在本文中,一种新的方法取代了典型的顺序逐层固定,事实证明,同时共电沉积方案可用于组装甲酸(FA)电氧化(FAO)的高效二元纳米电催化剂。该策略成功地将Pt纳米颗粒(纳米Pt; FA吸附/氧化的基本成分)与氧化锰纳米线(纳米MnOx; CO中毒缓解剂)均匀混合在一起,避免了催化剂表面的CO吸附中毒。沉积浴中催化剂成分的摩尔比(Pt:Mn)对于确定制得的二元催化剂的催化剂组成至关重要,因此(1:8)的摩尔比最适合产生最高的催化活性。据信,调整催化剂2

更新日期:2019-03-12
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