Naslov
Interfacial Properties of the System Titanium Oxide / Poly(Sodium 4-Styrenesulphonate) Aqueous Solution

Autori
Mazur, Darko ; Preočanin, Tajana ; Kovačević, Davor

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

Izvornik
23rd Conference of the European Colloid and Interface Society : Book of Abstracts / - , 2009

Skup
23rd Conference of the European Colloid and Interface Society

Mjesto i datum
Antalya, Turska, 06.09.2009. - 11.09.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Titanium Oxide ; Poly(Sodium 4-Styrenesulphonate) ; Surface Potential

Sažetak
The interfacial properties of the system titanium oxide/poly(sodium 4-styrenesulphonate) (PSS) in the presence of different alkali metal chlorides and at different ionic strength values were investigated by means of direct surface potential measurements and by means of electrophoretic light scattering measurements. Surface potentials at the titanium oxide/aqueous solution interface were obtained from measured electrode potentials of a rutile single crystal electrode [1]. The surface potential results obtained for rutile electrode in the presence of different salts (LiCl, NaCl, KCl) were compared with the surface potential results for the same electrode obtained after adsorption of poly(sodium 4-styrenesulphonate) in the presence of the same electrolytes. It was shown that in the case of measurements without added PSS the differences in obtained surface potential vs. pH plots in the presence of different cations could be observed only at the highest ionic strength used (0.1 mol/l) in the basic region. On the other hand, the comparison of results of surface potential measurements after adsorption of PSS with above mentioned results indicates the shift in obtained potential values in the acidic region which is accordance with adsorption of negatively charged PSS on positively charged rutile in that pH region. Additionally, the zeta potential of titanium oxide particles was measured with and without added poly(sodium 4- styrenesulphonate) and it was also observed that in the pH region where titanium oxide is positively charged significant adsorption of poly(sodium 4-styrenesulphonate) takes place.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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