Studies of adhesion of metal particles to silica particles based on zeta potential measurements

Ritva Lindberg, Göran Sundholm, Johan Sjöblom, Petri Ahonen, Esko I. Kauppinen

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)

Abstract

The zeta-potentials of silica, copper, platinum and gold particles have been measured as a function of pH. The isoelectric points were found to be at pH 3.0, 5.8, 3.0 and 3.5, respectively. In the pH range 3.0 to 5.8 copper and silica particles are oppositely charged and accordingly the coating of silica with copper particles could be demonstrated. In the case of gold and platinum the sign of the charge is such that direct adhesion to silica particles cannot be expected and this was also demonstrated in the case of platinum.
Original languageEnglish
Pages (from-to)715-722
JournalJournal of Dispersion Science and Technology
Volume20
Issue number1-2
DOIs
Publication statusPublished - 1999
MoE publication typeA1 Journal article-refereed

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