Deciphering the Elementary Steps of Transport-Reaction Processes at Individual Ag Nanoparticles by 3D Superlocalization Microscopy

Transport-reaction processes at individual Ag nanoparticles (NPs) are studied using electrochemistry coupled with in situ 3D light scattering microscopy. Electrochemistry is used to trigger a (i) diffusiophoretic transport mode capable of accelerating and preconcentrating NPs toward an electrode and...

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Bibliographic Details
Published in:Nano letters 2015-10, Vol.15 (10), p.6454-6463
Main Authors: Patel, Anisha N, Martinez-Marrades, Ariadna, Brasiliense, Vitor, Koshelev, Dmitry, Besbes, Mondher, Kuszelewicz, Robert, Combellas, Catherine, Tessier, Gilles, Kanoufi, Frédéric
Format: Article
Language:English
Subjects:
Diffusion
Electrochemistry
Electrodes
Joining
Microscopy
Nanoparticles
Silver
Three dimensional
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Summary:Transport-reaction processes at individual Ag nanoparticles (NPs) are studied using electrochemistry coupled with in situ 3D light scattering microscopy. Electrochemistry is used to trigger a (i) diffusiophoretic transport mode capable of accelerating and preconcentrating NPs toward an electrode and (ii) subsequent diffusion-controlled oxidation of NPs. Individual NP dissolution rate, analyzed using optical modeling, suggests the intervention of insoluble products. New insights into diverse NPs behaviors highlight the strength of coupled optical-electrochemical 3D microscopies for single-NP studies.
ISSN:1530-6984
1530-6992
DOI:10.1021/acs.nanolett.5b02921