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Why are Silver Nanoparticles More Toxic Than Bulk Silver? Towards Understanding the Dissolution and Toxicity of Silver Nanoparticles

Abstract:

The mass-transport to a spherical particle in solution is considered in the context of the mechanism of oxygen reduction on silver nanoparticles. For small particles (≤1 μm) the reduction follows a two-proton, two-electron pathway due to the rapid diffusion of the intermediate hydrogen peroxide away from the interface. Above this size threshold the hydrogen peroxide is further reduced to water. This switch of mechanism is of importance when interpreting the dissolution of silver nanoparticles...

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Publication status:
Published
Peer review status:
Peer Reviewed
Version:
Publishers Version

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Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Physical and Theoretical Chem
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Physical and Theoretical Chem
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Physical and Theoretical Chem
Laborda, E More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Physical and Theoretical Chem
Journal:
International Journal of Electrochemical Science
Volume:
9
Issue:
3
Pages:
1132-1138
Publication date:
2014-03-05
EISSN:
1452-3981
ISSN:
1452-3981
URN:
uuid:3ee0c9fc-b5b1-4af8-8456-86e82e3bc1dd
Source identifiers:
450139
Local pid:
pubs:450139

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