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American Chemical Society, Nano Letters, 10(15), p. 6454-6463, 2015

DOI: 10.1021/acs.nanolett.5b02921

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

Journal article published in 2015 by Anisha N. Patel ORCID, Ariadna Martinez-Marrades, Vitor Brasiliense, Dmitry Koshelev, Mondher Besbes, Robert Kuszelewicz, Catherine Combellas, Gilles Tessier, Frédéric Kanoufi
This paper is available in a repository.
This paper is available in a repository.

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Abstract

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 towards an electrode, (ii) subsequent diffusion-controlled oxidation of NPs. Individual NP dissolution rate, analyzed using optical modeling, suggests the intervention of insoluble products. These insights into diverse NPs behaviors highlight the strength of coupled optical-electrochemical 3D microscopies for single-NP studies.