2021
DOI: 10.1002/chem.202101263
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Tracking the Electrocatalytic Activity of a Single Palladium Nanoparticle for the Hydrogen Evolution Reaction

Abstract: 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 s… Show more

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Cited by 27 publications
(26 citation statements)
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“…The baseline I RMS values from four independent electrodes showed comparable noise levels before and aer the addition of Pt NPs. Similar to the previous studies, [24][25][26][27] the Pt NPs electrochemically catalyze proton reduction to hydrogen during the collision time. Using the presented amplier array, the low-noise faradaic current recording from single Pt NP catalysis events were achieved (Fig.…”
Section: Faraday Discussion Papersupporting
confidence: 71%
“…The baseline I RMS values from four independent electrodes showed comparable noise levels before and aer the addition of Pt NPs. Similar to the previous studies, [24][25][26][27] the Pt NPs electrochemically catalyze proton reduction to hydrogen during the collision time. Using the presented amplier array, the low-noise faradaic current recording from single Pt NP catalysis events were achieved (Fig.…”
Section: Faraday Discussion Papersupporting
confidence: 71%
“…Among single nanoparticle electrochemistry, nano‐impact electrochemistry (NIE) is currently an active technique based on the stochastic collisions of individual nanoparticles onto an inert ultramicroelectrode, which has been utilized to probe a variety of single nanoparticles [18–20] and biological entities [21] . NIE‐based reaction mode has been found to significantly increase the reaction efficiency by enhancing the mass transport of reactants [22–25] . Furthermore, since the spatial and temporal continuum of the reaction at ensemble electrochemistry is broken, this mode can also accelerate reaction kinetics [22] and minimize catalyst degradation [25] …”
Section: Introductionmentioning
confidence: 99%
“…[21] NIE-based reaction mode has been found to significantly increase the reaction efficiency by enhancing the mass transport of reactants. [22][23][24][25] Furthermore, since the spatial and temporal continuum of the reaction at ensemble electrochemistry is broken, this mode can also accelerate reaction kinetics [22] and minimize catalyst degradation. [25] In this work, we find that NIE enabled single nanoparticle electrochemistry can also alter the reaction selectivity by using LaNiO 3 nanocubes (NCs) catalyzed hydrogen peroxide reduction reaction (HPRR) as a model reaction.…”
Section: Introductionmentioning
confidence: 99%
“…32−34 When an electrocatalyst particle is used in the particle impact experiment, the activity of individual particles can be measured from the discrete electrochemical signals. 35 The dimension of the particle in the impact experiments has been decreased to single-atom catalysts or few-atom clusters, allowing the fundamental study of particle-size-dependent electrocatalytic activity. 36,37 Another approach to reveal the heterogeneity at the electrochemical interfaces is nanoscale electrochemical imaging.…”
mentioning
confidence: 99%