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arXiv 1207.3282cond-mat.soft
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带电狭缝系统中吸附电解质电性质的蒙特卡罗模拟

Monte Carlo simulation of the electrical properties of electrolytes adsorbed in charged slit-systems

R. Kovács, M. Valiskó, D. Boda

摘要:

我们用巨正则蒙特卡罗模拟研究了原始模型电解质在层状狭缝系统中的吸附。狭缝系统包含一系列带电膜。离子被禁止从膜,而它们被允许被吸附到膜之间的狭缝中。我们专注于狭缝系统的电学性质。我们展示了浓度、电荷、电场和电势的分布。结果表明,狭缝系统与体相之间的电势差主要是由于狭缝系统边界处形成的双电层引起的,但外狭缝的极化也对电位差有贡献。我们证明,只有当我们在一个单一的模拟单元中模拟狭缝与体相一起时,才能研究将离子带入狭缝系统所需的电功。

英文摘要:

We study the adsorption of primitive model electrolytes into a layered slit system using grand canonical Monte Carlo simulations. The slit system contains a series of charged membranes. The ions are forbidden from the membranes, while they are allowed to be adsorbed into the slits between the membranes. We focus on the electrical properties of the slit system. We show concentration, charge, electric field, and electrical potential profiles. We show that the potential difference between the slit system and the bulk phase is mainly due to the double layers formed at the boundaries of the slit system, but polarization of external slits also contributes to the potential drop. We demonstrate that the electrical work necessary to bring an ion into the slit system can be studied only if we simulate the slit together with the bulk phases in one single simulation cell.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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