ADHESION OF HEMATITE PARTICLES ONTO SILVER AND MERCURY-ELECTRODES - TIME RESPONSE TO POTENTIAL CHANGES

The adherence of colloidal hematite onto silver and mercury electrodes is studied employing different deposition and electrochemical potenti al perturbation techniques. The time response of the attachment proces s is much shorter than that for particle transfer to a region close to the electrode surface and is strongly influenced by the electrode pot ential. The influence of the latter manifests itself within a few seco nds and in a reversible way in as much as the particles are not driven away from the electrode surface by Other external forces. (C) 1995 Ac ademic Press, Inc.