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Journal of Nanoparticle Research

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01.05.2019 | Research Paper

“Pure” silver hydrosol: nanoparticles and stabilizing carbonate ions

verfasst von: E. V. Abkhalimov, V. A. Ershov, B. G. Ershov

Erschienen in: Journal of Nanoparticle Research | Ausgabe 5/2019

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Abstract

A method for the preparation of a pure colloidal solution of silver (silver hydrosol) containing only small metal nanoparticles and carbonate ions stabilizing them was developed. For this purpose, a solution containing silver and oxalic acid salts was exposed to UV radiation of a low-pressure pulsed xenon lamp. The irradiation initiated Ag⁺ reduction with oxalate ions to give metal nanoparticles and carbonate ions. The latter ensure the electrostatic protection of nanoparticles via the formation of an electric double layer. Variation of the process conditions (silver and oxalate concentrations, UV irradiation conditions, the presence of air, and so on) allows the preparation of silver hydrosols with nanoparticle size ranging from 5 to 30 nm. The hydrosol is aggregatively stable for several months.

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Titel: “Pure” silver hydrosol: nanoparticles and stabilizing carbonate ions
verfasst von: E. V. Abkhalimov
V. A. Ershov
B. G. Ershov
Publikationsdatum: 01.05.2019
Verlag: Springer Netherlands
Erschienen in: Journal of Nanoparticle Research / Ausgabe 5/2019
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-019-4538-x

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