Effect of surface modification as well as type and ionic strength of electrolyte on electrokinetic properties of TiO2 and TiO2-SiO2

• Autorzy: Nowacka M. , Jesionowski T.
• Języki publikacji: EN

Abstrakty

EN

Electrokinetic properties of the commercial titanium white (Tytanpol® RS) and precipitated TiO2-SiO2 composite were studied. As they depend mainly on the character of the surface of materials studied, the effect of the amount and type of surface modifying agents on the electrokinetic potential was analysed. The study was performed on the commercial titania and TiO2-SiO2 composite precipitated from an emulsion system, both either unmodified or modified with three organofunctional silanes applied in three different concentrations. The effect of ionic strength of the electrolyte used (KCl, NaNO3 or AlCl3) on the electrokinetic potential of the two systems studied was established. Stability of the dispersive systems studied was evaluated.

Słowa kluczowe

EN

zeta potential; electrophoretic mobility; TiO2 and TiO2-SiO2 oxide composite; electrokinetic stability; surface modification

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2012
• Tom: Vol. 48, iss. 1
• Strony: 209--218
• Opis fizyczny: Bibliogr. 22 poz.

Twórcy

autor

Nowacka M.

autor

Jesionowski T.

• Poznan University of Technology, Institute of Chemical Technology and Engineering , M. Sklodowskiej-Curie 2, 60-965 Poznan, Poland,

Bibliografia

• 1. ALKAN M., DEMIRBAŞ Ö., 2005, Electrokinetic properties of kaolinite in mono- and multivalent electrolyte solutions, Micropor. Mesopor. Mat. 83, 51–59.
• 2. BERGUA U., ROBERTS W., 2006, Colloidal silica: fundamentals and applications, CRC Press, New York.
• 3. ERDEMOGLU M., SARIKAYA M., 2006, Effects of heavy metals and oxalate on the zeta potential of magnetite, J. Colloid Interface Sci. 300, 795–804.
• 4. HIEMENZ P.C., RAJAGOPALAN R., 1997, Principles of colloid and surface chemistry, Marcel Dekker, New York.
• 5. HUNTER R., 1981, Zeta potential in colloid science, Academic Press, Sydney.
• 6. HUNTER R., 2001, Measuring zeta potential in concentrated industrial slurries, Colloids Surf. A 195, 205–214.
• 7. JAYAWEERA P., HETTIARACHCHI S., 1993, Determination of zeta-potential and pH of zero charge of oxides at high-temperatures, Rev. Sci. Instrum. 64, 524–528.
• 8. JESIONOWSKI T., CIESIELCZYK F., KRYSZTAFKIEWICZ A., Influence of selected alkoxysilanes on dispersive properties and surface chemistry of spherical silica precipitated in emulsion media, Mat. Chem. Phys. 119, 65–74.
• 9. KOSMULSKI M., 2001, Chemical properties of material surfaces, Marcel Dekker, New York.
• 10. KOSMULSKI M., PROCHNIAK P., ROSENHOLM J.B., 2009a, Electroacoustic study of titania at high concentrations of 1-2, 2-1 and 2-2 electrolytes, Colloids Surf. B 1-3, 106–111.
• 11. KOSMULSKI M., PROCHNIAK P., ROSENHOLM J.B., 2009b, Electrokinetic study of adsorption of ionic surfactants on titania from organic solvents, Colloids Surf. A 1-3, 298–300.
• 12. KOSMULSKI M., 2010, Surface charging and points of zero charge, CRC Press, New York.
• 13. LEONG Y. K., 2005, Yield stress and zeta potential of nanoparticulate silica dispersions under the influence of adsorbed hydrolysis products of metal ions - Cu(II), Al(III) and Th(IV), J. Colloid Interface Sci. 292, 557–566.
• 14. LYKLEMA J., 1984, Points of zero charge in the presence of the specific adsorption, J. Colloid Interface Sci. 99, 109–117.
• 15. OTTERSTEDT J.E., BRANDRETH D.A., 1998, Small particles technology, Plenum Press, NewYork.
• 16. SIWINSKA-STEFANSKA K., PRZYBYLSKA A., JESIONOWSKI T., SOJKA-LEDAKOWICZ J., OLCZYK J., WALAWSKA A., 2010, Wpływ kompozytu tlenkowego TiO2-SiO2 na właściwości barierowe wyrobów włókienniczych, Przem. Chem. 89, 1661–1666.
• 17. SIWINSKA-STEFANSKA K., PAUKSZTA D., JESIONOWSKI T., 2011, Właściwości fizykochemiczne kompozytów TiO2/SiO2 otrzymanych w wyniku nukleacji układu reakcyjnego, Przem. Chem. 90, 1–11.
• 18. VANE L.M., ZANG G.M., Effect of aqueous phase properties on clay particle zeta potential and electroosmotic permeability for electrokinetic soil remediation processes, J. Hazard. Mater. 55, 1–22.
• 19. WALKOWIAK M., OSINSKA M., JESIONOWSKI T., SIWINSKA-STEFANSKA K., 2010, Synthesis and characterization of a new hybrid TiO2-SiO2 filler for lithium conducting gel electrolytes, Cent. Eur. J. Chem. 8 (6), 1311–1317.
• 20. WALL S., 2010, The history of electrokinetic phenomena, J. Colloid Interface Sci. 15, 119–124.
• 21. WU W., GIESE R.F., van OSS C.J., 1999, Stability versus flocculation of particle suspensions in water – correlation with the extendend DLVO approach for aqueous system, compared with classical DLVO theory, Colloids Surf. B 14, 47–55.
• 22. YOON R., MAO L., 1996, Application of extandend DLVO theory, J. Colloid Interface Sci. 181, 613–26.