Journal ArticleDOI
Tracking the Electrocatalytic Activity of a Single Palladium Nanoparticle for the Hydrogen Evolution Reaction.
TLDR
In this article, the authors take the hydrogen evolution reaction (HER) catalyzed by palladium nanoparticles as a model system to track the electrocatalytic activity of single Pd NPs by stochastic collision and ensemble electrochemistry, respectively.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 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.read more
Citations
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Journal ArticleDOI
From Ensemble Electrochemistry to Nano-Impact Electrochemistry: Altered Reaction Selectivity.
Yige Zhou,Rui Zhong,Xiaoyu Wang,Qianqian Liu Yajie Zhou Juan Tao,JianHua Zhang,Chuhong Lin,Hui-Fang Wei +6 more
TL;DR: In this paper , the authors systematically studied the reaction kinetics and mass transport behavior of LaNiO 3 nanocubes (LaNiO3 ǫNCs) catalyzed hydrogen peroxide reduction reaction (HPRR) at ensemble and single nanoparticle levels using nano-impact electrochemistry.
Journal ArticleDOI
Learning from the Heterogeneity at Electrochemical Interfaces.
TL;DR: In this paper , the authors highlight the role of heterogeneity in electrochemistry, especially in the context of electrocatalysis, and provide perspectives on what one can learn by studying heterogeneity and how one can use heterogeneity to design more efficient electrochemical devices.
Journal ArticleDOI
Nanoimpact Electrochemistry to Quantify the Transformation and Electrocatalytic Activity of Ni(OH)2 Nanoparticles: Toward the Size-Activity Relationship at High Throughput.
Mathias Miranda Vieira,Jean-François Lemineur,Jérôme Médard,Catherine Combellas,Frédéric Kanoufi,Jean-Marc Noël +5 more
TL;DR: In this article , nanoimpact electrochemistry (NIE) allows for quantifying the transformation and measuring the electrocatalytic activity for the oxygen evolution reaction (OER) of >100 Ni(OH)2 NPs of a wide range of size.
Journal ArticleDOI
Enhanced single-nanoparticle collisions for the hydrogen evolution reaction in a confined microchannel
TL;DR: In this article , an enhanced near-wall hindered diffusion is introduced in the stochastic collision process by coupling a Au ultramicroelectrode (UME) with a confined microchannel.
Journal ArticleDOI
From ensemble electrochemistry to nanoparticle-impact electrochemistry: altered reaction process and possible applications
Dianmei Song,Yi-Ge Zhou +1 more
TL;DR: Nanoparticle-impact electrochemistry (NIE) is an electroanalytical method based on the stochastic collisions of individual nanoparticles onto an inert ultramicroelectrode as discussed by the authors .
References
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Journal ArticleDOI
CoSe2 Nanoparticles Grown on Carbon Fiber Paper: An Efficient and Stable Electrocatalyst for Hydrogen Evolution Reaction
TL;DR: A two-step reaction for preparing three-dimensional electrodes composed of CoSe2 nanoparticles grown on carbon fiber paper shows excellent catalytic activity for a hydrogen evolution reaction in an acidic electrolyte, and offers an attractive catalyst material for large-scale water-splitting technology.
Journal ArticleDOI
Palladium-Based Nanomaterials: Synthesis and Electrochemical Applications
Aicheng Chen,Cassandra K. Ostrom +1 more
Journal ArticleDOI
The Electrochemical Detection and Characterization of Silver Nanoparticles in Aqueous Solution
Journal ArticleDOI
Current transients in single nanoparticle collision events.
TL;DR: The study of single NP collisions allows one to screen particle size distributions and estimate NP concentrations and diffusion coefficients and indicates that the collision of NPs at the detector electrodes occurs in a statistically random manner, with the average frequency a function of particle concentration and diffusion coefficient.
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