- Title
- Corrosion processes of silver nanoparticles
- Creator
- Keast, Vicki J.
- Relation
- Applied Nanoscience Vol. 12, Issue 6, p. 1859-1868
- Publisher Link
- http://dx.doi.org/10.1007/s13204-022-02462-1
- Publisher
- Springer
- Resource Type
- journal article
- Date
- 2022
- Description
- The corrosion of silver nanoparticles (AgNPs) on exposure to ambient air was studied using imaging and analysis in the scanning transmission electron microscope (STEM). Secondary particles are formed on exposure to ambient air, and these are more numerous and more widely distributed as the relative humidity increases. Energy-dispersive X-ray analysis (EDS) confirms that the particles contain Ag and S. Electron energy loss spectra (EELS) in the valence part of the spectrum (< ~ 50 eV) identify the corrosion product as Ag2S on comparison with spectra from reference compounds. The EELS measurements also allow for a direct visualisation of the shift in the energy of the surface plasmon peak that occurs when the corrosion product is in contact with the particle. The experiments confirm that advanced electron microscopy methods have an important role in investigating corrosion of nanoparticulate systems.
- Subject
- nanoparticle; plasmonics; corrosion; silver; silver sulfide; electron energy loss spectroscopy
- Identifier
- http://hdl.handle.net/1959.13/1478059
- Identifier
- uon:50089
- Identifier
- ISSN:2190-5509
- Rights
- This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
- Language
- eng
- Full Text
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