Influence of solution pH, supporting electrolyte presence and solid content on the stability of aqueous nanosilica suspension

K. Terpilowski; M. Wisniewska; V.I. Zarko

Journal of Industrial and Engineering Chemistry, Vol.30, 71-76, October, 2015

DOI10.1016/j.jiec.2015.05.003 Export Citation

Influence of solution pH, supporting electrolyte presence and solid content on the stability of aqueous nanosilica suspension

K. Terpilowski, M. Wisniewska^{1, †}, and V.I. Zarko²

Department of Physical Chemistry-Interfacial Phenomena, Poland
¹Department of Radiochemistry and Colloid Chemistry, Faculty of Chemistry, Maria Curie-Sklodowska University, Maria Curie-Sklodowka Sq. 3, 20-031 Lublin, Poland
²Institute of Surface Chemistry, 17 General Naumov Street, 03164 Kiev, Ukraine

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The effects of solution pH, supporting electrolyte presence and solid content on nanosilica suspension stability were examined. The turbidimetry method was applied to monitor the changes in the system stability in the short (about 2 h) and long (about 18 days) periods of time. The stability coefficients and aggregate diameters were calculated numerically to estimate colloidal system properties. The sodium chloride presence (as a supporting electrolyte) improves the stability conditions of SiO2 suspension. The greatest effect of solution pH change is observed in the aqueous medium. The most unstable system occurs at pH 10.6 after 18 days.

Keywords:Colloidal silica;Turbidimetry;Suspension stability;Electrostatic stabilization;Solid content

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[1] Okawa S, Watanabe K, Dent. Mater. J., 28, 68 (2009)

[2] Krysztafkiewicz A, Binkowski S, Dec A, Dyes Pigment., 60, 233 (2004)

[3] Bondioli F, Ferrari AM, Leonelli C, Manfredini T, Mater. Res. Bull., 33(5), 723 (1998)

[4] Li X, Yang Y, Yang O, J. Mater. Chem., 1, 1525 (2013)

[5] Yuan G, Louis C, Delannoy L, Keane MA, J. Catal., 247(2), 256 (2007)

[6] Majewski P, Luong J, Stretton K, Water Sci. Technol., 65, 46 (2012)

[7] Pal A, Adak A, Koner S, Des. Water Treat., 22, 1 (2010)

[8] Qu X, Alvarez PJJ, Li Q, Water Res., 47, 3931 (2013)

[9] Karnib M, Kabbani A, Holail H, Olama Z, Energy Proc., 50, 113 (2014)

[10] Parida SK, Dash S, Patel S, Mishra BK, Adv. Colloid Interface Sci., 121, 77 (2006)

[11] Angelatos AS, Wang YJ, Caruso F, Langmuir, 24(8), 4224 (2008)

[12] Shubin V, J. Colloid Interface Sci., 191(2), 372 (1997)

[13] Wisniewska M, J. Therm. Anal. Calorim., 101, 753 (2010)

[14] Wisniewska M, Mater. Lett., 64, 1611 (2010)

[15] Wisniewska M, Sep. Sci. Technol., 48(7), 1073 (2013)

[16] Wisniewska M, Szewczuk-Karpisz K, Ostolska I, Fluid Phase Equilib., 360, 10 (2013)

[17] Hamaker HC, Physica, 4, 1058 (1937)

[18] Snabre P, Mills PQ, Europhys. Lett., 25, 651 (1994)

[19] Jal PK, Patel S, Mishra BK, Talanta, 62, 1005 (2004)

[20] Ong SW, Zhao XL, Eisenthal KB, Chem. Phys. Lett., 191, 327 (1992)

[21] Janusz W, Electrical double Layer at the Metal Oxide/Electrolyte Interface in Interfacial Forces and Fields: Theory and Applications Surfactant Science, vol. 85, Dekker M, New York, 1999.

[22] Wisniewska M, Urban T, Nosal-Wiercinska A, Zarko VI, Gun’ko VM, Cent. Eur. J. Chem., 12, 476 (2014)

[23] Wisniewska M, Colloid Polym. Sci., 289, 341 (2011)