期刊
LANGMUIR
卷 32, 期 2, 页码 380-400出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.5b03611
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资金
- University of Geneva
- Swiss National Science Foundation [140327, 159874]
- U.S. National Science Foundation [1134398, 1160138]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1134398] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1160138] Funding Source: National Science Foundation
Charge regulation in the electrical double layer has important implications for ion adsorption, interparticle forces, colloidal stability, and deposition phenomena. Although charge regulation generally receives little attention, its consequences can be major, especially when considering interactions between unequally charged surfaces. The present article discusses common approaches to quantify such phenomena, especially within classical Poisson-Boltzmann theory, and pinpoints numerous situations where a consideration of charge regulation is essential. For the interpretation of interaction energy profiles, we advocate the use of the constant regulation approximation, which summarizes the surface properties in terms of two quantities, namely, the diffuse layer potential and the regulation parameter. This description also captures some pronounced regulation effects observed in the presence of multivalent ions.
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