Adsorption of environmentally important compounds
on the surface

Processes, which take place at the electrochemical interface, often involve adsorption.
The adsorbate-surface and adsorbate-adsorbate interactions participate in the formation of
'compact' layer. The capacitance of the double layer of electrode reflects very sensitively
changes of the interface structure at the surfaces. This allows discrimination of a simple
adsorption process and a slow transition of structure of adsorption film controlled by the
mechanism of nucleation. The information about nucleation kinetics and mechanism of growth
of the film on the electrode can be obtained from the time dependence of the double layer
capacitance. The phase transition may lead to the reorientation within the adsorbed layer.
These measurements are performed on the mercury drop electrode.

The ability of benfluralin molecules to form an adsorbed layer was studied at single crystal
gold(111) electrode. The scanning probe techniques atomic force microscopy (AFM) and
scanning tunneling microscopy (STM) were used for characterization of the layer of benfluralin
on the gold(111) substrate. The height of the layer was characterized by AFM nanoshaving
technique.
 publications   2011




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