Electrochemical characteristics of silicon and titanium oxides and titanium-oxygen nanostructures on silica supports

Electrochemical characteristics of silicon and titanium oxides and titanium -oxygen nanostructures on silica supports were studied by the potentiometri c titration and electrokinetic techniques. It was found that the applicatio n of a single titanium-oxygen layer leads to the shift of the isoelectric p oint (IEP) toward the alkaline pH region by approximately 1.5 units from th e pH(IEP) Of the bare support. An increase in the number of the deposited o xide layers to 6 does not result in further changes in pH(IEP) The pH(IEP) Of silicon oxide with deposited titanium-oxygen nanostructures differs from pH(IEP) Of titanium oxide, which is evidence of a mosaic structure of the surface of the modified samples.