Oxygen reduction reaction on stepped platinum surfaces in alkaline media

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Oxygen reduction reaction on stepped platinum surfaces in alkaline media.

The oxygen reduction reaction (ORR) in 0.1 M NaOH on platinum single crystal electrodes has been studied using hanging meniscus rotating disk electrode configuration. Basal planes and stepped surfaces with (111) and (100) terraces have been employed. The results indicate that the Pt(111) electrode has the highest electrocatalytic activity among all the studied surfaces. The addition of steps on...

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The interaction of platinum with water plays a key role in (electro)catalysis. Herein, we describe a combined theoretical and experimental study that resolves the preferred adsorption structure of water wetting the Pt(111)-step type with adjacent (111) terraces. Double stranded lines wet the step edge forming water tetragons with dissimilar hydrogen bonds within and between the lines. Our resul...

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ژورنال

عنوان ژورنال: Physical Chemistry Chemical Physics

سال: 2013

ISSN: 1463-9076,1463-9084

DOI: 10.1039/c3cp51642c