Combining Electrodeposition and Optical Microscopy for Probing Size-Dependent Single-Nanoparticle Electrochemistry

Angewandte Chemie
Jean-François LemineurFrédéric Kanoufi

Abstract

Electrodeposition of nanoparticles (NPs) is a promising route for the preparation of highly electroactive nanostructured electrodes. By taking advantage of progressive electrodeposition, disordered arrays with a wide size distribution of Ag NPs are produced. Combined with surface-reaction monitoring by using highly sensitive backside absorbing-layer optical microscopy (BALM), such arrays offer a platform for screening size-dependent electrochemistry at the single NP level. In particular, this strategy allows rationalizing the electrodeposition dynamics at the single-NP level (>10 nm), up to the point of quantifying the presence of metal nanoclusters (<2 nm), and probing easier NP oxidation with size decrease, either through electrochemical or galvanic reactions.

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Citations

Jul 24, 2020·Chemical Society Reviews·Andrew J WilsonPrashant K Jain
Jul 30, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·J BompardA Girard-Egrot
Jul 10, 2019·Analytical Chemistry·Shasha LiuWei Wang

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