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

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 Al<inf>2</inf>O<inf>3</inf> (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 Al<inf>2</inf>O<inf>3</inf> nanoparticles, the stronger influence of Na+ concentration on the size and charge of aggregates has been observed.

Original language	English
Journal	Journal of Nanoparticle Research
Volume	17
Issue number	5
DOIs	https://doi.org/10.1007/s11051-015-3012-7
Publication status	Published - 1 May 2015

Keywords

Aggregation
Aluminium
Aluminium oxide
Aqueous suspensions
Colloids
Electrolyte solutions
Nanoparticles

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Modelling and Simulation
Chemistry(all)
Materials Science(all)
Bioengineering

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10.1007/s11051-015-3012-7

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Aggregation of manufactured nanoparticles in aqueous solutions of mono- and bivalent electrolytes. / Godymchuk, Anna; Karepina, Elizaveta; Yunda, Elena Nikolaevna; Bozhko, Irina ; Lyamina, Galina; Kuznetsov, Denis; Gusev, Alexander; Kosova, Natalia.

In: Journal of Nanoparticle Research, Vol. 17, No. 5, 01.05.2015.

Research output: Contribution to journal › Article › peer-review

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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.",

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author = "Anna Godymchuk and Elizaveta Karepina and Yunda, {Elena Nikolaevna} and Irina Bozhko and Galina Lyamina and Denis Kuznetsov and Alexander Gusev and Natalia Kosova",

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AU - Karepina, Elizaveta

AU - Yunda, Elena Nikolaevna

AU - Bozhko, Irina

AU - Lyamina, Galina

AU - Kuznetsov, Denis

AU - Gusev, Alexander

AU - Kosova, Natalia

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KW - Aggregation

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KW - Aluminium oxide

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KW - Colloids

KW - Electrolyte solutions

KW - Nanoparticles

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