Naslov
Characterization of Solid/Liquid Interfaces by Surface Potential Measurements

Autori
Kallay, Nikola ; Preočanin, Tajana ; Šupljika, Filip

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of abstract, 9th Annual Conference of the Yugoslav Materials Research Society, Herceg Novi, Montenegro, September 2007. / - , 2007

Skup
9th Annual Conference of the Yugoslav Materials Research Societ

Mjesto i datum
Herceg Novi, Crna Gora, 09.2007

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Surface potential; metal oxide; Electrical Interfacial Layer;
(Surface potential; metal oxide; Electrical Interfacial Layer)

Sažetak
Recently, the method for measurement of the surface potential Ψ 0 was introduced1. For that purpose the single crystal electrodes (SCrE) were developed2. The problem of evaluation of surface potentials from measured electrode potentials of SCrE was solved3. Surface potential, i.e. the electrostatic potential at the solid surface (inner Helmholtz plane), affects directly activity coefficients of charged surface species4 and thus the entire equilibrium within the electrical interfacial layer (EIL). Several metal oxide aqueous interfaces were examined. It was shown that the magnitude of the slope of the Ψ 0(pH) function is lower than the Nernstian, depending on the type of oxide and the composition of the electrolyte solution. The simultaneous interpretation of electrokinetic potential, surface potential and surface charge data will be presented. Such an approach enables more reliable characterization of interfaces. The application of results to the problem of stability of nano-dispersions will be discussed.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA