STUDIES OF ADHESION OF METAL PARTICLES TO SILICA PARTICLES BASED ON ZETA POTENTIAL MEASUREMENTS
作者:
RITVA LINDBERG,
GORAN SUNDHOLM,
JOHAN SJö BLOM,
PETRI AHONEN,
ESKOI. KAUPPINEN,
期刊:
Journal of Dispersion Science and Technology
(Taylor Available online 1999)
卷期:
Volume 20,
issue 1-2
页码: 715-722
ISSN:0193-2691
年代: 1999
DOI:10.1080/01932699908943816
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
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.
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