The influence of hydration upon the potential at the shear plane (zeta potential) of a hydrophobic surface in the presence of various electrolytes

Eagland, D.; Allen, A.

doi:10.1016/0021-9797(77)90140-0

Cited by 20 publications

(5 citation statements)

References 51 publications

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“…Nonetheless, it is surprising and of relevance to oxide/water systems. Contrary to direct or reverse specific ion effects at the solid/water interface, ,− we observed both reverse specific ion effects for the chaotropes and direct specific ion effects for the kosmotropes in the same system. The occurrence of such direct and reverse specific ion effects can be accounted for by incorporation of hydration forces associated with the nonelectrostatic potentials .…”

Section: Resultscontrasting

confidence: 74%

Specific Ion Effects on Adsorption at the Solid/Electrolyte Interface: A Probe into the Concentration Limit

et al. 2011

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Adsorption of organic acid at the mineral oxide-electrolyte interface has been explored. The adsorption of 2,4-dihydroxybenzoic acid onto α-alumina illustrates that specific ion effects show up at very low salt concentration (<0.05 mM). These surprising Hofmeister effects occur at salt concentrations an order of magnitude lower than in a previous study ( J. Colloid Interface Sci. 2010, 344, 482 ). Salts enhance adsorption and specifically at ≤0.05 mM. With increasing concentration of ion, the adsorption density decreases. The results are accounted for by incorporating the ion size and dispersion forces in the theoretical modeling based on ab initio calculations of polarizabilities. The order appears to be governed by ion size, determining the maximum concentration that ions can attain near the surface due to close packing.

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Section: Resultscontrasting

confidence: 74%

Specific Ion Effects on Adsorption at the Solid/Electrolyte Interface: A Probe into the Concentration Limit

et al. 2011

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“…As in those cases .-the slope of the curves remains constant, despite the the magnitude of the intercept tends to zero npon no transition region is observed t h a t would be typical interpretation in terms of yield stresses [20] must be rejected. In actual fact, these time-dependent intercepts arc related to the salt-exclusion and polarization phenomena expressed by Equations (2) and (9).…”

Section: Streaming Potentialsmentioning

confidence: 74%

The effect of various forms of polarization on experimental procedures for the measurment of electrokinetic properties of porous systems. Application to polystyrene plugs

Put

Bijsterbosch

1981

Acta Polymerica

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This paper describes how in measuring electrokinetic phenomena, timedependent signals can be processed by taking account of concentration polarization a t the plug-solution interface (negative adsorption) and a t the current-processing electrodes, and intrinsic polarization processes related to the curved geometry of the particles constituting the system. The approach, including the use of a four-electrode technique, not only serves t o properly establish the relevant electrokinetic parameters, but also provides additional information (e.g. on transport numbers). The theories have experimentally been tested with plugs of monodisperse polystyrene particles. Der Einflup verschiedener Polarisationsarten auf experimentelle Messungen der elektrokinelischen Eigenschaften poriiser Systeme. .4nwendung auf PolystyrenpfropfenEs wird beschrieben, wie bei der Messung elektrokinetischer Erscheinungen zeitabhangige Signale verarbeitet werden konnen mit Beriicksichtigung der Konzentrationspolarisation an der Grenzflache Pfropfen-Losung (negative Adsorption) und an den stromerzeugenden Elektroden sowie der inneren Polarisation, die mit der gekriimmten Geometrie der das System bildenden Teilchen zusammenhangt. Die Naherung, einschlierjlich der Anwendung einer Vierelektroden-Methode, errnoglicht nicht nur die Bestimmung relevanter elektrokinetischer Parameter, sondern liefert auch zusatzliche Informationen (z. B. zur Transportzahl). Die Theorien wurden mit Pfropfen aus monodispersen Polystyrenteilchen experimentell gepriift. Bnumue paa~uunaax euaos no~mpuaayuu ua mexnurcy u a a e p e~u a ~n e r c m p~~u~e m~u e~r c u x ceoiicme nopucmbax cucmea. Llpumeueuue nonucmuponbuux n p 0 6 0~

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“…In addition, the ionic mobility is lower (see Table 3). Thus, the surface conductivity is expected to be less important, and the underestimation of the zeta potential derived from streaming current due to this effect would be negligible (3,7,14,15).…”

Section: Figmentioning

confidence: 98%

The Surface Charge Density Influence on the Electrokinetic Properties of Model Colloids: Solvent Composition Effect

El-Gholabzouri

Cabrerizo

Hidalgo‐Álvarez

1999

Journal of Colloid and Interface Science

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The influence of hydration upon the potential at the shear plane (zeta potential) of a hydrophobic surface in the presence of various electrolytes

Cited by 20 publications

References 51 publications

Specific Ion Effects on Adsorption at the Solid/Electrolyte Interface: A Probe into the Concentration Limit

Specific Ion Effects on Adsorption at the Solid/Electrolyte Interface: A Probe into the Concentration Limit

The effect of various forms of polarization on experimental procedures for the measurment of electrokinetic properties of porous systems. Application to polystyrene plugs

The Surface Charge Density Influence on the Electrokinetic Properties of Model Colloids: Solvent Composition Effect

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