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Adv Colloid Interface Sci. 2018 Jan;251:115-138. doi: 10.1016/j.cis.2017.10.005. Epub 2017 Nov 3.

The pH dependent surface charging and points of zero charge. VII. Update.

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Lublin University of Technology, Nadbystrzycka 38, PL-20618 Lublin, Poland. Electronic address:


The pristine points of zero charge (PZC) and isoelectric points (IEP) of metal oxides and IEP of other materials from the recent literature, and a few older results (overlooked in previous searches) are summarized. This study is an update of the previous compilations by the same author [Surface Charging and Points of Zero Charge, CRC, Boca Raton, 2009; J. Colloid Interface Sci. 337 (2009) 439; 353 (2011) 1; 426 (2014) 209]. The field has been very active, but most PZC and IEP are reported for materials, which are very well-documented already (silica, alumina, titania, iron oxides). IEP of (nominally) Gd2O3, NaTaO3, and SrTiO3 have been reported in the recent literature. Their IEP were not reported in older studies.


Electrokinetic potential; Isoelectric point; Point of zero charge; Surface charge density; Zeta potential


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