Croatica Chemica Acta, Vol. 91 No. 4, 2018.
Izvorni znanstveni članak
https://doi.org/10.5562/cca3445
Impact of Weak Organic Acids on Precipitation of Poly(acrylic acid) Stabilized Silver Nanoparticles; an Electrochemical Approach
Irena Ivanišević
; Department of General and Inorganic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, Croatia
Vanja Rukavina
; Department of General and Inorganic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, Croatia
Petar Kassal
; Department of General and Inorganic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, Croatia
Stjepan Milardović
; Department of General and Inorganic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, Croatia
Sažetak
Owing to recent developments in the field of silver nanoparticle (AgNP) based conductive inks for inkjet printing, there is a growing demand for implementation of novel synthetic routes. This study presents a synthesis of silver colloid with an average particle diameter of less than 3 nm. AgNPs were obtained by a chemical reduction method, using hydrazine as a reducing agent, and poly(acrylic acid), (PAA), as a grain-stabilizing agent. Synthesis was provided using highly concentrated aqueous solutions. To obtain PAA-coated silver nanopowder, weak organic acids were introduced as precipitation agents. The main goal of this work was to study the impact of various organic precipitants on nanosurface-adsorbed polyacid for enhanced ink stability, by implementing electrochemical techniques. Cyclic voltammetry and electrochemical impedance spectroscopy were the main methods in describing all steps of the procedure – from preliminary experiments to whole system characterization. For a comprehensive study of the nanoink suspension, dynamic light scattering (DLS) and electrokinetic potential measurements were carried out. The obtained results show, through a very apparent decrement in anodic current responses, the influence of different organic acid precipitants on nanoink destabilization.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Ključne riječi
conductive ink chemistry; cyclic voltammetry; electrochemical impedance spectroscopy; silver nanoparticle; weak organic acids
Hrčak ID:
217672
URI
Datum izdavanja:
30.12.2018.
Posjeta: 1.519 *