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Journal of Molecular Liquids
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publication venue for: Charge asymmetric electrolytes around a rigid cylindrical polyelectrolyte: A generalization of the capacitive compactness
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Charge asymmetric electrolytes around a rigid cylindrical polyelectrolyte: A generalization of the capacitive compactness
abstract: The surface mean electrostatic potential and capacitive compactness of the electrical double layer surrounding an infinite rigid cylindrical polyelectrolyte are analysed for equally-sized -1:z%2b aqueous electrolytes. Monte Carlo simulations, the non-linear Poisson–Boltzman equation, the modified Poisson–Boltzmann theory, and the hypernetted chain/mean spherical approximation integral equation are used to examine the role of multivalent cations (coions) when the properties of monovalent anions (counterions) are fixed. A non-zero mean electrostatic potential in the neighbourhood of an uncharged polyelectrolyte is predicted by the simulations and the modified Poisson–Boltzmann theory in the presence of multivalent cations. The concept of capacitive compactness is generalised to overcome the divergence found in the classical definition, when a non-zero potential at the point of zero charge is present. With a highly electrified colloidal surface an inversion is observed, as a function of colloidal charge, in the precedence of the mean electrostatic potential near the polyelectrolyte%27s surface and of the capacitive compactness between -1:%2b1 and -1:z%2b electrolytes. © 2022 Elsevier B.V.
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artnum: 120538
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volume: 367
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crisid: 10272
has publication venue: Journal of Molecular Liquids
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date time value: article date 10272
freetext keyword: Capacitive compactness; Electrical double layer; Ionic specific adsorption; Multivalent coions Boltzmann equation; Electrostatics; Integral equations; Intelligent systems; Monte Carlo methods; Poisson equation; Positive ions; Capacitive compactness; Charge-asymmetric electrolytes; Electrical double layers; Electrostatic potentials; Generalisation; Ionic specific adsorption; Multivalent cations; Multivalent coion; Poisson-Boltzmann theory; Specific adsorption; Polyelectrolytes
origen: scopus
e iscopus: 2-s2.0-85140080563
most specific type: Document
type: Generically Dependent Continuant
abstract: The surface mean electrostatic potential and capacitive compactness of the electrical double layer surrounding an infinite rigid cylindrical polyelectrolyte are analysed for equally-sized -1:z aqueous electrolytes. Monte Carlo simulations, the non-linear Poisson–Boltzman equation, the modified Poisson–Boltzmann theory, and the hypernetted chain/mean spherical approximation integral equation are used to examine the role of multivalent cations (coions) when the properties of monovalent anions (counterions) are fixed. A non-zero mean electrostatic potential in the neighbourhood of an uncharged polyelectrolyte is predicted by the simulations and the modified Poisson–Boltzmann theory in the presence of multivalent cations. The concept of capacitive compactness is generalised to overcome the divergence found in the classical definition, when a non-zero potential at the point of zero charge is present. With a highly electrified colloidal surface an inversion is observed, as a function of colloidal charge, in the precedence of the mean electrostatic potential near the polyelectrolyte%27s surface and of the capacitive compactness between -1: 1 and -1:z electrolytes. © 2022 Elsevier B.V.
type: Information Content Entity
doi: 10.1016/j.molliq.2022.120538
related by: authorship_70292
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funding4126
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label: TKII-IVGU001; Consejo Nacional de Ciencia y Tecnología, CONACYT: 286105, CB-2016; Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, CINVESTAV: 13–2022, FOP16-2021–01-320091
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date: 2026-08-24T04:43:33
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