Determination of electrokinetic potential of porous glasses by methods of streaming potential, electroosmosis and electrophoresis

• Autorzy: Volkova A. , Ermakova L. , Volkova M. , Antropova T. V.
• Języki publikacji: EN

Abstrakty

EN

Complex research of structural and electrokinetic characteristics of nano- and the ultraporous glasses prepared from sodium borosilicate (SBG) glass DV1-Sh in KCl background solutions of various concentrations in a wide pH range has been performed. It is shown that for ultraporous membranes with the sizes of porous channels r in the range 10–70 nm appreciable electroosmotic flows and a good agreement of electrokinetic potential values determined by three different methods are observed. It is established that for nanoporous (r < 10 nm) glass membranes change of electroosmotic flow velocity with time is due to the development of concentration polarization.

Słowa kluczowe

EN

electrokinetic potential; electroosmotic flow

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2010
• Tom: Vol. 40, nr 2
• Strony: 341--349
• Opis fizyczny: Bibliogr. 11 poz.

Twórcy

autor

Volkova A.

autor

Ermakova L.

autor

Volkova M.

autor

Antropova T. V.

• Saint-Petersburg State University, Chemical Faculty, Universitetskii pr., 26, St. Petersburg, 198504, Russia

Bibliografia

• [1] ENKE D., JANOWSKI F., SCHWIEGER W., Porous glasses in the 21st century – a short review, Microporous and Mesoporous Materials 60(1–3), 2003, pp. 19–30.
• [2] KHANDURINA J., JACOBSON S.C., WATERS L.C., FOOTE R.S., RAMSEY J.M., Microfabricated porousmembrane structure for sample concentration and electrophoretic analysis, Analytical Chemistry 71(9), 1999, pp. 1815–1819.
• [3] SHUHUAI YAO, SANTIAGO J.G., Porous glass electroosmotic pumps: theory, Journal of Colloid and Interface Science 268(1), 2003, pp. 133–142.
• [4] EVSTRAPOV A.A., ESIKOVA N.A., RUDNITSKAJA G.E., ANTROPOVA T.V., Application of porous glasses in microfluidic devices, Optica Applicata 38(1), 2008, pp. 31–38.
• [5] ANTROPOVA T., Abstract of a doctoral thesis, St. Petersburg, 2005, p. 45.
• [6] MEDVEDEVA S., Abstract of a Ph.D. thesis, St. Petersburg, 2004, p. 16.
• [7] BOGDANOVA N., SEMENOVA O., ERMAKOVA L., SIDOROVA M., Electrokinetic characteristics of ultraporous membrane in NaCl solutions, Vestnik SPbSU 3(4), 2006, pp. 89–94.
• [8] LEVINE S., MARRIOTT J.R., NEALE G., EPSTEIN N., Theory of electrokinetic flow in fine cylindrical capillaries at high zeta-potentials, Journal of Colloid and Interface Science 52(1), 1975,pp. 136–149.
• [9] ERMAKOVA L., Abstract of a doctoral thesis, St. Petersburg, 2002, p. 33.
• [10] DUKHIN S., Non-equilibrium electric surface phenomena, Advances in Colloid and Interface Science 44, 1993, pp. 1–134.
• [11] ERMAKOVA L., VOLKOVA A., ANTROPOVA T., SIDOROVA M., Preparation of nano- and ultraporous glasses and study of their structural and electrokinetic characteristics in 1:1 electrolyte solutions,Colloid Journal 69(5), 2007, pp. 563–570.