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Methorics of the Precipitation Processes. XXIII. Flocculation and Charge Reversal of Agl Colloid in the Presence of Large Organic Ions and Electrolytes

Đ. Težak ; Department of Physical Chemistry, Institute of Chemistry, University of Zagreb, Zagreb, Croatia, Yugoslavia, YU-41001 Zagreb, P .O.B. 163
M. Jedovnicky ; Department of Physical Chemistry, Institute of Chemistry, University of Zagreb, Zagreb, Croatia, Yugoslavia, YU-41001 Zagreb, P .O.B. 163
B. Težak ; Department of Physical Chemistry, Institute of Chemistry, University of Zagreb, Zagreb, Croatia, Yugoslavia, YU-41001 Zagreb, P .O.B. 163

Sažetak

Flocculation and charge reversal of Ag! colloid in the presence
of large organic ions bromophenolblue (BPB) and rhodamine B
(Rhd B) has been investtgated in aqueous or alcoholic medium. The
kinetics of particle growth was followed tyndallometrically. By
spectrophotomertric measurements the adsoirption isotherms were
determined. The flocculation mechanism is proposed on the basis of flocculamits' action on surfaces either of the same or opposite charge.
The flocculation and charge reversal of Ag! sol in the presence of
dyes were found to be simultaneous processes.
A Ag! sol stabilized by BPB was flocculated in the presence
of neutral elecrtrolytes.

Ključne riječi

Hrčak ID:

196440

URI

https://hrcak.srce.hr/196440

Datum izdavanja:

22.12.1976.

Posjeta: 381 *