Scientific article

Interactions between silica particles in the presence of multivalent coions

Published inSoft Matter, vol. 13, no. 34, p. 5741-5748
Publication date2017

Forces between charged silica particles in solutions of multivalent coions are measured with colloidal probe technique based on atomic force microscopy. The concentration of 1 : z electrolytes is systematically varied to understand the behavior of electrostatic interactions and double-layer properties in these systems. Although the coions are multivalent the Derjaguin, Landau, Verwey, and Overbeek (DLVO) theory perfectly describes the measured force profiles. The diffuse-layer potentials and regulation properties are extracted from the forces profiles by using the DLVO theory. The dependencies of the diffuse-layer potential and regulation parameter shift to lower concentration with increasing coion valence when plotted as a function of concentration of 1 : z salt. Interestingly, these profiles collapse to a master curve if plotted as a function of monovalent counterion concentration.

Research group
Citation (ISO format)
STOJIMIROVIC, Biljana, VALMACCO, Valentina, TREFALT, Gregor. Interactions between silica particles in the presence of multivalent coions. In: Soft Matter, 2017, vol. 13, n° 34, p. 5741–5748. doi: 10.1039/C7SM01168G
Main files (1)
Article (Published version)
ISSN of the journal1744-683X

Technical informations

Creation03/08/2018 3:11:00 PM
First validation03/08/2018 3:11:00 PM
Update time03/15/2023 7:57:39 AM
Status update03/15/2023 7:57:39 AM
Last indexation01/17/2024 2:26:36 AM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack