期刊
ADVANCES IN COLLOID AND INTERFACE SCIENCE
卷 274, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.cis.2019.102040
关键词
Charge inversion; Overcharging; Charge reversal; Charge regulation
Both overcharging and charge inversion denote a general observation that the sign of a surface charge can flip in the presence of interacting species such as surfactants, polyelectrolytes, proteins and multivalent ions. Moreover, charge inversion of proteins through charge regulation, is one explanation for protein adsorption to similarly charged surfaces. While overcharging and charge inversion have been long studied, the explanations for these phenomena are often still debated. Broadly these explanations can be categorized as chemical where specific attractive interactions are seen as the cause of charge inversion, and physical where purely electrostatic interactions and constraints of geometry are used as explanation. In this review, charge inversion is discussed from a very broad viewpoint, where we draw connections between the various explanations proposed for very different systems. Especially, we highlight the work of Johannes Lyklema, who always carefully balanced between the competing chemical and physical explanations, and demonstrated that only few experimental systems allow just a single explanation. (C) 2019 The Authors. Published by Elsevier B.V.
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