Stability of aqueous silica nanoparticle dispersions
Source abstract
Abstract
In this study, we present quantification methods for nanoparticle stability analysis using non-intrusive analytical techniques: attenuated total reflectance, Fourier transform infrared (ATR-FTIR) spectroscopy, ultraviolet–visible (UV–vis) spectrophotometer, zeta potential analyses, and dynamic light scattering (DLS). We use these techniques to study the stability of silica nanoparticle dispersions and the effects of pH, temperature, and electrolytes that would be encountered in oil field brines in a reservoir. Spectral analysis of the Si–O bond at wavenumber of 1110 cm−1 with the ATR-FTIR indicates a structural change on the surface of silica particles as the dispersion pH changes, which agrees with zeta potential measurements. We define a critical salt concentration (CSC) for different salts, NaCl, CaCl2, BaCl2, and MgCl2, above which the silica dispersion becomes unstable. Three distinct stages of aggregation occur in the presence of salt: clear dispersed, turbid, and separated phases. Divalent cations Mg2+, Ca2+, and Ba2+ are more effective in destabilizing silica nanoparticle dispersion than the monovalent cation Na+. The CSC for Na+ is about 100 times more than for Ca2+, Ba2+, and Mg2+. Among the divalent cations studied, Mg2+ is the most effective in destabilizing the silica particles. The CSC is independent of silica concentration, and lowers at high temperature.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Enhanced Oil Recovery Techniques · Spectroscopy and Quantum Chemical Studies · Hydrocarbon exploration and reservoir analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (27)
Show source-provided references
1. Asay DB, Kim SH (2005) Evolution of the adsorbed water layer structure on silicon oxide at room temperature. J Phys Chem B 109:16760–1676310.1021/jp053042o ↗
2. ASTM Standard D 4187-82, Zeta Potential of Colloids in Water and Waste Water, 1985
3. Colic M, Fisher ML, Franks GV (1998) Influence of ion size on short-range repulsive forces between silica surfaces. Langmuir 14:6107–611210.1021/la980489y ↗
4. Derjaguin BV, Landau L (1941) Theory of the stability of strongly charged lyophobic sols and the adhesion of strongly charged particles in solutions of electrolytes. Acta Physicochim USSR 14:633–662
5. Dumont F (2006) Stability of sols: do the silica hydrosols obey the DLVO theory? In: Bergna HE, Roberts WO (eds) Colloidal silica: fundamentals and applications. CRC Press, Boca Raton, pp 243–245
6. Elimelech M, Gregory J, Jia X, Williams RA (1998) Particle deposition and aggregation: measurement modelling and simulation. Butterworth-Heinemann, Woburn
7. Franks GV (2002) Zeta potentials and yield stresses of silica suspensions in concentrated monovalent electrolytes: isoelectric point shift and additional attraction. J Colloid Interface Sci 249:44–5110.1006/jcis.2002.8250 ↗
8. Hair ML (2006) Surface chemistry of silica. In: Bergna HE, Roberts WO (eds) Colloidal silica: fundamentals and applications. CRC Press, Boca Raton, pp 257–260
9. Healy TW (2006) Stability of aqueous silica sols. In: Bergna HE, Roberts WO (eds) Colloidal silica: fundamentals and applications. CRC Press, Boca Raton, pp 247–252
10. Hofmann U, Endell K, Wilm D (1934) Röntgeno-graphische und kolloidchemische Untersuchungen über Ton. Angew Chem 47:539–55810.1002/ange.19340473002 ↗
11. Hunter RJ (2001) Foundations of colloid science. Oxford University Press, New York
12. Iler RK (1971) The chemistry of silica. Wiley, New York
13. Israelachivili J, Wennerstrom H (1996) Role of hydration and water structure in biological and colloidal interactions. Nature 379:219–22510.1038/379219a0 ↗
14. Jenkins S, Kirk SR, Persson M, Carlen J, Abbas Z (2007) Molecular dynamics simulation of nanocolloidal amorphous silica particles: part I. J Chem Phys 127:224711-1–224711-1010.1063/1.2803897 ↗
15. Jenkins S, Kirk SR, Persson M, Carlen J, Abbas Z (2008) Molecular dynamics simulation of nanocolloidal amorphous silica particles: part II. J Chem Phys 128:164711-1–164711-1010.1063/1.2906462 ↗
16. Kissa E (1999) Dispersions: characterizations testing, and measurement. Marcel Dekker, New York
17. Kitchener JA (1971) General discussion. Faraday Disc 52:372–38010.1039/df9715200372 ↗
18. Lane JMD, Ismail AE, Chandross M, Lorenz CD, Grest GS (2009) Forces between functionalized silica nanoparticles in solution. Phys Rev E 79:05050110.1103/PhysRevE.79.050501 ↗
19. Mokhatab S, Fresky MA, Islam MR (2006) Applications of nanotechnology in oil and gas E&P. J Pet Technol Online 58:4
20. Morrow BA, Molapo DT (2006) Infrared studies of chemically modified silica. In: Bergna HE, Roberts WO (eds) Colloidal silica: fundamentals and applications. CRC Press, Boca Raton, pp 287–294
21. Plaza RC, Quirantes A, Delgado AV (2002) Stability of dispersions of colloidal hematite/yttrium oxide core–shell particles. J Colloid Interface Sci 252:102–10810.1006/jcis.2002.8459 ↗
22. Roberts WO (2006) Manufacturing and applications of waterborne colloidal silica. In: Bergna HE, Roberts WO (eds) Colloidal silica: fundamentals and applications. CRC Press, Boca Raton, pp 131–176
23. Torrie GM, Kusalik PG, Patey GN (1989) Theory of the electrical double layer: ion size effects in a molecular solvent. J Chem Phys 91:6367–637510.1063/1.457404 ↗
24. Van Blaarderen A, Vrij A (2006) Synthesis and characterization of colloidal model particles mad from organoalkoxysilane. In: Bergna HE, Roberts WO (eds) Colloidal silica: fundamentals and applications. CRC Press, Boca Raton, pp 65–80
25. Verwey EJW, Overbeek JThG (1948) Theory of stability of lyophobic colloids. Elsevier, Amsterdam
26. Yalamanchili MR, Atia AA, Miller JD (1996) Analysis of interfacial water at a hydrophilic silicon surface by in situ FTIR/internal reflection spectroscopy. Langmuir 12:4176–418410.1021/la950340b ↗
27. Zhuravlev LT (1987) Concentration of hydroxyl groups on the surface of amorphous silicas. Langmuir 3:316–31810.1021/la00075a004 ↗