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Coupled Optical and Electrochemical Probing of Silver Nanoparticle Destruction in a Reaction Layer.

ABSTRACT: The oxidation of silver nanoparticles is induced to occur near to, but not at, an electrode surface. This reaction at a distance from the electrode is studied through the use of dark-field microscopy, allowing individual nanoparticles and their reaction with the electrode product to be visualized. The oxidation product diffuses away from the electrode and oxidizes the nanoparticles in a reaction layer, resulting in their destruction. The kinetics of the silver nanoparticle solution-phase reaction is shown to control the length scale over which the nanoparticles react. In general, the new methodology offers a route by which nanoparticle reactivity can be studied close to an electrode surface.

SUBMITTER: Little CA

PROVIDER: S-EPMC5974555 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature

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Coupled Optical and Electrochemical Probing of Silver Nanoparticle Destruction in a Reaction Layer.

Little Christopher A CA Batchelor-McAuley Christopher C Ngamchuea Kamonwad K Lin Chuhong C Young Neil P NP Compton Richard G RG

ChemistryOpen 20180523 5

The oxidation of silver nanoparticles is induced to occur near to, but not at, an electrode surface. This reaction at a distance from the electrode is studied through the use of dark-field microscopy, allowing individual nanoparticles and their reaction with the electrode product to be visualized. The oxidation product diffuses away from the electrode and oxidizes the nanoparticles in a reaction layer, resulting in their destruction. The kinetics of the silver nanoparticle solution-phase reactio ...[more]

PMID: 29872612

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