Journal
CHEMISTRYOPEN
Volume 7, Issue 5, Pages 370-380Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/open.201800048
Keywords
dissolution; nanoimpacts; nanoparticles; optical; silver
Categories
Funding
- Royal Thai government under the DPST scholarship program
- European Research Council under the European Union's Seventh Framework Programme (FP)/ERC Grant [320403]
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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.
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