pH and the surface tension of water

Beattie, James K.; Djerdjev, Alex M.; Gray‐Weale, Angus; Kallay, Nikola; Lützenkirchen, Johannes; Preočanin, Tajana; Selmani, Atiđa

doi:10.1016/j.jcis.2014.02.003

Cited by 95 publications

(77 citation statements)

References 22 publications

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“…[90] No decrease in surface tensions is observed. This is inconsistent with a large hydroxide adsorption.…”

Section: Hydroxide Adsorptionmentioning

confidence: 93%

“…This is inconsistent with a large hydroxide adsorption. [40,91,92,93] A Poisson Boltzmann model combined with the Gibbs adsorption isotherm predicts this enhancement would cause a very large decrease in surface tension in this regime (pH 7 → 10) where the zeta potential is still measurable and so the hydroxide anions must still be enhanced. The fact that there is strong theoretical evidence to refute this supposed dramatic attraction, that spectroscopic experiments show no conclusive evidence for this massive enhancement and that surface tension measurements are essentially impossible to reconcile with such a large effect strongly indicates that there is no large adsorption of hydroxide anions to the air-water interface, and that the explanation of these properties probably lies elsewhere.…”

Section: Hydroxide Adsorptionmentioning

confidence: 99%

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Hydronium and hydroxide at the air–water interface with a continuum solvent model

Duignan

Parsons

Ninham

2015

Chemical Physics Letters

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The distribution of hydronium and hydroxide ions at the air-water interface has been a problem of much interest in recent years. Here we explore what insights can be gained from a continuum solvent model. We extend our model of ionic solvation free energies and surface interaction free energies to include hydronium and hydroxide. The hydronium cation is attracted to the air-water interface, whereas the hydroxide anion is repelled. If the cavity size parameters required by the model are adjusted to reproduce solvation energies, quantitative agreement with experimental surface tensions is achieved. To the best of our knowledge, this is the most accurate theoretical prediction of this property so far. The results indicate that even if 'water structure' is important, its effects can be captured with a relatively simple model. They also contradict the inference from electrophoresis that there is strong hydroxide enhancement at the air-water interface.

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“…[90] No decrease in surface tensions is observed. This is inconsistent with a large hydroxide adsorption.…”

Section: Hydroxide Adsorptionmentioning

confidence: 93%

Section: Hydroxide Adsorptionmentioning

confidence: 99%

Hydronium and hydroxide at the air–water interface with a continuum solvent model

Duignan

Parsons

Ninham

2015

Chemical Physics Letters

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“…The change in surface adsorption of species can influence coalescence via surface tension or steric mechanisms [251]. Lorentz, in early work, suggested surface tension independence from pH 1 to pH 13, citing that absorption of hydroxide ions is always balanced by equilibrium conditions in the form of similar absorption of hydronium ions [252]. However, there is an unaccounted for dynamic surface tension in this context.…”

Section: Changes In Phmentioning

confidence: 99%

A parametric review of sonochemistry: Control and augmentation of sonochemical activity in aqueous solutions

Wood

Lee

Bussemaker

2017

Ultrasonics Sonochemistry

236

125

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Please cite this article as: R.J. Wood, J. Lee, M.J. Bussemaker, A parametric review of sonochemistry: control and augmentation of sonochemical activity in aqueous solutions, Ultrasonics Sonochemistry (2017), doi: http:// dx.doi.org/10. 1016/j.ultsonch.2017.03.030 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.A parametric review of sonochemistry: control and augmentation of sonochemical activity in aqueous solutions

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“…Beattie et al measured surface tension of water as a function of pH and found that ''the surface tension is essentially constant from pH 1 to pH 13'' [1]. From this constant surface tension behavior one would normally deduce, using the Gibbs adsorption equation [2], that there is no appreciable adsorption of any of the involved species (i.e., H 3 O + , OH À , Na + , and Cl À ) in the investigated concentration range.…”

mentioning

confidence: 99%

A comment on “pH and the surface tension of water” (J. K. Beattie, A. M. Djerdjev, A. Gray-Weale, N. Kallay, J. Lützenkirchen, T. Preočanin, A. Selmani, J. Colloid Interface Sci. 422 (2014) 54.)

Jungwirth

Tobias

2015

Journal of Colloid and Interface Science

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pH and the surface tension of water

Cited by 95 publications

References 22 publications

Hydronium and hydroxide at the air–water interface with a continuum solvent model

Hydronium and hydroxide at the air–water interface with a continuum solvent model

A parametric review of sonochemistry: Control and augmentation of sonochemical activity in aqueous solutions

A comment on “pH and the surface tension of water” (J. K. Beattie, A. M. Djerdjev, A. Gray-Weale, N. Kallay, J. Lützenkirchen, T. Preočanin, A. Selmani, J. Colloid Interface Sci. 422 (2014) 54.)

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