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 (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.
Sorbonne Paris Cité, Paris Diderot University, Interfaces, Traitements, Organisation et Dynamique des Systèmes Laboratory, CNRS-UMR 7086, 15 rue J. A. Baif, 75013 Paris, France.
Anisha N
AN
Patel
Sorbonne Paris Cité, Paris Descartes University, Neurophotonics Laboratory, CNRS UMR 8250, 45 rue des Saints-Pères, 75006 Paris, France.
Ariadna
A
Martinez-Marrades
Sorbonne Paris Cité, Paris Diderot University, Interfaces, Traitements, Organisation et Dynamique des Systèmes Laboratory, CNRS-UMR 7086, 15 rue J. A. Baif, 75013 Paris, France.
Vitor
V
Brasiliense
Sorbonne Paris Cité, Paris Descartes University, Neurophotonics Laboratory, CNRS UMR 8250, 45 rue des Saints-Pères, 75006 Paris, France.
Dmitry
D
Koshelev
Laboratoire Charles Fabry-IOGS, CNRS UMR 8501, 2 rue Austin Fresnel, 91127 Palaiseau Cedex, France.
Mondher
M
Besbes
Sorbonne Paris Cité, Paris Descartes University, Neurophotonics Laboratory, CNRS UMR 8250, 45 rue des Saints-Pères, 75006 Paris, France.
Robert
R
Kuszelewicz
Sorbonne Paris Cité, Paris Diderot University, Interfaces, Traitements, Organisation et Dynamique des Systèmes Laboratory, CNRS-UMR 7086, 15 rue J. A. Baif, 75013 Paris, France.
Catherine
C
Combellas
Sorbonne Paris Cité, Paris Descartes University, Neurophotonics Laboratory, CNRS UMR 8250, 45 rue des Saints-Pères, 75006 Paris, France.
Gilles
G
Tessier
Sorbonne Paris Cité, Paris Diderot University, Interfaces, Traitements, Organisation et Dynamique des Systèmes Laboratory, CNRS-UMR 7086, 15 rue J. A. Baif, 75013 Paris, France.
Frédéric
F
Kanoufi
3D superlocalization optical microscopy; Single nanoparticles; diffusiophoresis; electrodissolution; opto-electrochemistry