The Hamaker constant of anatase aqueous suspensions

Gómez-Merino, A.I.; Rubio-Hernández, F.J.; Velázquez-Navarro, J. F.; Galindo-Rosales, Francisco J.; Fortes-Quesada, P.

doi:10.1016/j.jcis.2007.08.001

Cited by 33 publications

(13 citation statements)

References 20 publications

(27 reference statements)

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“…A value of ATiO2-H2O-TiO2 = 3.5×10 -20 J was chosen for the Hamaker constant of nTiO2-water-nTiO2 system (Gómez-Merino et al, 2007). A value of ATiO2-H2O-silica = 1.4×10 -20 J was chosen for the Hamaker constant of the nTiO2-water-silica system (Butt et al, 2005, Petosa et al, 2010.…”

Section: Ntio2 Attachment To Sand At Various Ha Concentrationsmentioning

confidence: 99%

Stability of nTiO 2 particles and their attachment to sand: Effects of humic acid at different pH

Cheng

2016

Science of The Total Environment

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Influence of humic acid (HA) on stability and attachment of nTiO2 particles to sand was investigated. Results showed that HA can either promote or hinder nTiO2 stability, depending on pH and HA concentration. HA can either enhance or reduce nTiO2 attachment to Fe oxyhydroxide coating at pH 5, depending on HA concentration.Results further showed that at pH 5, Fe oxyhydroxide coating reduced nTiO2 attachment to sand in the absence of HA but increased nTiO2 attachment in the presence of low concentration of HA. Derjaguin-Landau-Verwey-Overbeek (DLVO) theory was invoked to analyze particle-to-particle and particle-to-sand interactions in order to elucidate the roles of pH, HA, quartz, and Fe coating in controlling nTiO2 stability and attachment. Overall, this study showed that changes in zeta potential of nTiO2 and Fe coating due to pH changes and/or HA adsorption are the key factors that influence stability and attachment of nTiO2.iii ACKNOWLEDGEMENTS

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Section: Ntio2 Attachment To Sand At Various Ha Concentrationsmentioning

confidence: 99%

Stability of nTiO 2 particles and their attachment to sand: Effects of humic acid at different pH

Cheng

2016

Science of The Total Environment

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“…A-data obtained with other methods, such as the contact angle method or a yield stress method, are considered less reliable and will be ignored [42][43]. The …”

Section: Application Of the Dlvo Theorymentioning

confidence: 99%

Effect of sodium dodecylsulfate monomers and micelles on the stability of aqueous dispersions of titanium dioxide pigment nanoparticles against agglomeration and sedimentation

Yang

Kelkar

Zhu

et al. 2015

Journal of Colloid and Interface Science

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“…For TiO 2 , it was deduced from linearly correlating yield stress data with the square zeta potential. 62 As in the case of colloidal Al 2 O 3 in decalin, 50 the Tabor-Winterton approximation was adopted to evaluate A H of tricalcium phosphate particles. Upon neglecting retardation effects, it gives: 63…”

Section: Resultsmentioning

confidence: 99%