Combining Electrodeposition and Optical Microscopy for Probing Size‐Dependent Single‐Nanoparticle Electrochemistry. (17th August 2018)

• Record Type: Journal Article
• Authors: Lemineur, Jean‐François; Noël, Jean‐Marc; Ausserré, Dominique; Combellas, Catherine; Kanoufi, Frédéric
• Is Part Of: Angewandte Chemie. Volume 130:Number 37(2018)
• Page Start: 12174
• Page End: 12178
• Publication Date: 2018-08-17
• Subjects: Einzelnanopartikel-Elektrochemie -- Elektrochemische Abscheidung -- Größeneffekte -- Optische Mikroskopie; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201807003
• Languages: English
• ISSNs: 0044-8249

Abstract

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.