Naslov
Influence of weak organic acids during precipitation on stabilization of silver nanoparticles

Autori
Ivanišević, Irena ; Rukavina, Vanja ; Milardović, Stjepan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of abstracts 17th Ružička days / Tomas, Srećko ; Ačkar, Đurđica - Osijek : Grafika Osijek, 2018

ISBN
978-953-7005-57-3

Skup
17. Ružičkini dani "Danas znanost - sutra industrija"

Mjesto i datum
Vukovar, Hrvatska, 19.09.2018. - 21.09.2018

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
silver nanoparticles ; conductive nano-ink ; cyclic voltammetry ; electrochemical impedance spectroscopy

Sažetak
In recent years, silver nanoparticles (AgNPs) have received great attention due to their unique optoelectronic and physicochemical properties [1]. In this study, wet chemical synthesis of AgNPs, using hydrazine as a reducing agent and poly(acrylic acid) (PAA) as a capping agent is given [2]. PAA-coated silver nanopowder, precipitated using different weak organic acids, was used for nano-ink formulation. Characterization of the reaction mixture, as well as the prepared conductive ink, was performed by various electrochemical techniques. PAA absorbed on the nanoparticle surface behaves as a weak acid which, depending on pH value of the medium, can be protonated or deprotonated. Efficiency of electrostatic stabilization of the prepared suspensions depends on the acid dissociation rate, and was tested in a wide range of Britton-Robinson buffer solutions. The anodic current responses and impedance measurement parameters were plotted versus pH to determine surface bound PAA quantity.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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