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Journal of Nanoparticle Research

Erschienen in:

01.05.2015 | Research Paper

Aggregation of manufactured nanoparticles in aqueous solutions of mono- and bivalent electrolytes

Erschienen in: Journal of Nanoparticle Research | Ausgabe 5/2015

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Abstract

The study of biological activity of manufactured nanopowders lacks experimental data concerning the influence of electrolyte nature and content on the degree of nanoparticles aggregation in aqueous suspensions. Using the dynamic light scattering technique, it has been shown how the ionic strength (0.0001…100 mM) of mono- and bivalent electrolyte (Na⁺, Ca²⁺) solutions influences the size and zeta-potential of Al (90 nm) and Al₂O₃ (30 nm) nanoparticles. It has been determined that the aggregative effect of counterions decreases when their charge increases. The weaker influence of Ca²⁺ concentration on the aggregation of both nanoparticles has been demonstrated. For Al₂O₃ nanoparticles, the stronger influence of Na⁺ concentration on the size and charge of aggregates has been observed.

Vorheriger Artikel Direct effect of tetrahedral alcohol species on the SPB of gold colloids: a deconvolution study

Nächster Artikel Optical properties and visible-light-driven photocatalytic activity of Bi8V2O17 nanoparticles

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Titel: Aggregation of manufactured nanoparticles in aqueous solutions of mono- and bivalent electrolytes
Publikationsdatum: 01.05.2015
Erschienen in: Journal of Nanoparticle Research / Ausgabe 5/2015
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-015-3012-7

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