Challenges for physical characterization of silver nanoparticles under pristine and environmentally relevant conditions
- 17 March 2011
- journal article
- research article
- Published by Royal Society of Chemistry (RSC)
- Vol. 13 (5), 1212-1226
- https://doi.org/10.1039/c1em10024f
Abstract
The reported size distribution of silver nanoparticles (AgNPs) is strongly affected by the underlying measurement method, agglomeration state, and dispersion conditions. A selection of AgNP materials with vendor-reported diameters ranging from 1 nm to 100 nm, various size distributions, and biocompatible capping agents including citrate, starch and polyvinylpyrrolidone were studied. AgNPs were diluted with either deionized water, moderately hard reconstituted water, or moderately hard reconstituted water containing natural organic matter. Rigorous physico-chemical characterization by consensus methods and protocols where available enables an understanding of how the underlying measurement method impacts the reported size measurements, which in turn provides a more complete understanding of the state (size, size distribution, agglomeration, etc.) of the AgNPs with respect to the dispersion conditions. An approach to developing routine screening is also presented.Keywords
This publication has 43 references indexed in Scilit:
- Antibody-Mediated Self-Limiting Self-Assembly for Quantitative Analysis of Nanoparticle Surfaces by Atomic Force MicroscopyMicroscopy and Microanalysis, 2011
- Controlled Release of Biologically Active Silver from Nanosilver SurfacesACS Nano, 2010
- Competitive Adsorption of Thiolated Polyethylene Glycol and Mercaptopropionic Acid on Gold Nanoparticles Measured by Physical Characterization MethodsLangmuir, 2010
- Critical Evaluation of Nanoparticle Tracking Analysis (NTA) by NanoSight for the Measurement of Nanoparticles and Protein AggregatesPharmaceutical Research, 2010
- Ultra-small-angle X-ray scattering at the Advanced Photon SourceJournal of Applied Crystallography, 2009
- Irena: tool suite for modeling and analysis of small-angle scatteringJournal of Applied Crystallography, 2009
- In situultra-small-angle X-ray scattering study of the solution-mediated formation and growth of nanocrystalline ceriaJournal of Applied Crystallography, 2008
- Environmental behavior and ecotoxicity of engineered nanoparticles to algae, plants, and fungiEcotoxicology, 2008
- Molecular heterogeneity analysis of poly(amidoamine) dendrimer-based mono- and multifunctional nanodevices by capillary electrophoresisThe Analyst, 2006
- Particle size distributions from SANS data using the maximum entropy methodJournal of Applied Crystallography, 1988