Electrochemical observation of single palladium nanoparticle collision using electrocatalytic current amplification

Daryanavard, Naser; Zare, Hamid R.

doi:10.1016/j.jelechem.2017.03.045

Cited by 4 publications

(1 citation statement)

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“…Stochastic collision electrochemistry has emerged as a unique methodology to study one entity at a time, which may be a cell, a vesicle, a nanoparticle, etc [8–23] . Some typical works based on stochastic electrochemistry have been reported by fluidizing particles collision with the conventional electrode [24] and single gold nanoparticle (Au NPs) collision with the ultramicroelectrode [25] .…”

Section: Methodsmentioning

confidence: 99%

Tracking the Electrocatalytic Activity of a Single Palladium Nanoparticle for the Hydrogen Evolution Reaction

Mengjie

Peng

et al. 2021

Chemistry A European J

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The nanoparticle‐based electrocatalysts’ performance is directly related to their working conditions. In general, a number of nanoparticles are uncontrollably fixed on a millimetre‐sized electrode for electrochemical measurements. However, it is hard to reveal the maximum electrocatalytic activity owing to the aggregation and detachment of nanoparticles on the electrode surface. To solve this problem, here, we take the hydrogen evolution reaction (HER) catalyzed by palladium nanoparticles (Pd NPs) as a model system to track the electrocatalytic activity of single Pd NPs by stochastic collision electrochemistry and ensemble electrochemistry, respectively. Compared with the nanoparticle fixed working condition, Pd NPs in the nanoparticle diffused working condition results in a 2–5 orders magnitude enhancement of electrocatalytic activity for HER at various bias potential. Stochastic collision electrochemistry with high temporal resolution gives further insights into the accurate study of NPs’ electrocatalytic performance, enabling to dramatically enhance electrocatalytic efficiency.

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Section: Methodsmentioning

confidence: 99%