Combining Electrodeposition and Optical Microscopy for Probing Size-Dependent Single-Nanoparticle Electrochemistry
Résumé
Electrodeposition of nanoparticles (NPs) is aprom-ising route for the preparation of highly electroactive nano-structured electrodes.B yt aking advantage of progressive electrodeposition, disordered arrays with aw ide 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 aplatform for screening size-dependent electrochemistry at the single NP level. In particular,t his strategy allows rationalizing the electrodeposition dynamics at the single-NP level (> 10 nm), up to the point of quantifying the presence of metal nano-clusters (< 2nm), and probing easier NP oxidation with size decrease,either through electrochemical or galvanic reactions.
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JFL - Angewandte Chemie International Edition - Combining Electrodeposition and Optical Microscopy for Probing Size-Dependent Single-Nanoparticle Electrochemistry (Version auteur CC).pdf (894.58 Ko)
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