An analysis of the dependence of the zeta potential and surface charge on surfactant concentration, ionic strength, and pH

Wnek, Walter J.; Davies, Reg

doi:10.1016/0021-9797(77)90295-8

Cited by 44 publications

(22 citation statements)

References 10 publications

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“…The pH value of this crossing point is rather low, compared to the values in the literature, but remains within the reported range [17,[21][22][23]. Interestingly, Wnek and Davies [24] and Parks [25] reported that the greater the degree of hydration of a material, the higher the point of zero charge, which would reveal a rather low hydration degree in our case. XPS spectra have revealed a higher hydroxylation state of the rutile powder after 24 h of contact with an aqueous solution (Fig.…”

Section: Measurement Of Zeta Potential-dynamic Methodssupporting

confidence: 61%

Comparison between batch and column experiments to determine the surface charge properties of rutile TiO2 powder

Švecová

Cremel

Sirguey

et al. 2008

Journal of Colloid and Interface Science

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Section: Measurement Of Zeta Potential-dynamic Methodssupporting

confidence: 61%

Comparison between batch and column experiments to determine the surface charge properties of rutile TiO2 powder

Švecová

Cremel

Sirguey

et al. 2008

Journal of Colloid and Interface Science

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“…Generally zeta potential gives a direct measure of inter-particle repulsive force and the flocculation tendency of particles5051. The behavior of zeta potential as depicted from fig.…”

Section: Discussionmentioning

confidence: 99%

Synthesis, cytotoxicity and hydroxyapatite formation in 27-Tris-SBF for sol-gel based CaO-P2O5-SiO2-B2O3-ZnO bioactive glasses

Kaur

Pickrell

Kimsawatde

et al. 2014

Sci Rep

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CaO-P2O5-SiO2-B2O3-ZnO bioactive glasses were prepared via an optimized sol–gel method. The current investigation was focused on producing novel zinc based calcium phosphoborosilicate glasses and to evaluate their mechanical, rheological, and biocompatible properties. The morphology and composition of these glasses were studied using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The particle size, mechanical and flexural strength was also determined. Furthermore, the zeta potential of all the glasses were determined to estimate their flocculation tendency. The thermal analysis and weight loss measurements were carried out using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) respectively. For assessing the in-vitro bioactive character of synthesized glasses, the ability for apatite formation on their surface upon their immersion in simulated body fluid (SBF) was checked using SEM and pH measurements. MTS assay cytotoxicity assay and live-dead cell viability test were conducted on J774A.1 cells murine macrophage cells for different glass concentrations.

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“…Accordingly, different aluminol groups ( AlOH, Al 2 OH, O 2 AlOH) might exist at the hydrated alumina surfaces, where the aluminum ions are the resources of acidity and oxygen ions contribute to the alkalinity. That is to say, the alumina-A surface had hydroxyl groups that were slightly more polarized than hydroxyls on the alumina hydroxide surface, because of the differences in coordination number of the aluminum ions [20]. Therefore, it could be expected that the more acidic surfaces of alumina-A would exhibit stronger anion affinity.…”

Section: Potentiometric Titrationsmentioning

confidence: 99%

Adsorption of phosphate at the aluminum (hydr)oxides–water interface: Role of the surface acid–base properties

Yang

Wang

Sun

et al. 2007

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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In this paper, the adsorption of phosphate on two crystallized aluminum oxides, pseudo-boehmite (pseudo-␥-AlOOH) and ␣-Al 2 O 3 , was studied. The adsorption experiments were carried out in 0.01 M KNO 3 solutions at pH 4 and 6, respectively. Adsorption densities were calculated to evaluate the phosphate adsorption affinity for the two aluminum oxides. To better understand the effect of surface properties on the adsorption behavior of phosphate, the surface structure and properties were investigated with X-ray diffraction, N 2 adsorption-desorption, electron microscope observation and surface acid-base titrations. The results from adsorption isotherms showed that at both pH 4 and 6, pseudo-␥-AlOOH exhibited greater adsorption capacity than ␣-Al 2 O 3 . For both pseudo-␥-AlOOH and ␣-Al 2 O 3 , the adsorbed amount of phosphate at pH 4 was higher than that at pH 6. Adsorption density calculation indicated that ␣-Al 2 O 3 had greater affinity for phosphate than pseudo-␥-AlOOH. Information gained from examinations of surface properties revealed that the specific surface area played an important role on adsorption capacity, while the acidity of surface aluminol groups evaluated from acid-base titration curves contributed more to adsorption affinity and consequently the adsorption density.

show abstract

An analysis of the dependence of the zeta potential and surface charge on surfactant concentration, ionic strength, and pH

Cited by 44 publications

References 10 publications

Comparison between batch and column experiments to determine the surface charge properties of rutile TiO2 powder

Comparison between batch and column experiments to determine the surface charge properties of rutile TiO2 powder

Synthesis, cytotoxicity and hydroxyapatite formation in 27-Tris-SBF for sol-gel based CaO-P2O5-SiO2-B2O3-ZnO bioactive glasses

Adsorption of phosphate at the aluminum (hydr)oxides–water interface: Role of the surface acid–base properties

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