Abstract

AbstractNoble metal nanoparticles with plasmon resonance features have been widely applied in electrocatalysis and photo‐electrochemistry owing to their unique physical, optical, and catalytic properties. As heterogeneity of nanostructures has considerable influence on their catalytic activities, investigation of electrochemical process on a single nano‐catalyst is necessary to eliminate bulk effect and averaged results. Dark‐field microscopy (DFM) enables the measurements of plasmon resonance scattering spectroscopy of a single nanoparticle. Integrating with electrochemistry, DFM provides a powerful tool to real‐time monitor electrochemical reactions at the nanoscale surface to get new insight into the reaction mechanism. Herein, this mini‐review presented impressive applications of DFM in single‐nanoparticle electrochemistry and discussed recent progress on its performance with enhanced sensitivity and resolution.

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