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arXiv 1608.07797cond-mat.softcond-mat.stat-mechphysics.bio-phphysics.chem-ph
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酸溶液的表面张力:非线性Poisson-Boltzmann理论之外的涨落

Surface Tension of Acid Solutions: Fluctuations beyond the Non-linear Poisson-Boltzmann Theory

Tomer Markovich, David Andelman, Rudi Podgornik

摘要:

我们扩展了我们以前的研究离子溶液的表面张力,并将其应用到具有强离子-表面相互作用的酸(和盐)的情况。这些离子-表面相互作用产生非线性边界条件,由于从本体到界面上的离子的吸附,具有有效的表面电荷。计算是使用环路展开技术完成的,其中零环路(平均场)对应于非线性Poisson-Boltzmann方程。的表面张力得到解析的单回路的顺序,其中的平均场的贡献是一个修改的Poisson-Boltzmann表面张力,和单回路的贡献给出了一个推广的Onsager-Samaras结果。我们的理论很好地适用于各种不同的酸和盐,并且与酸的逆Hofmeister级数一致。

英文摘要:

We extend our previous study of surface tension of ionic solutions and apply it to the case of acids (and salts) with strong ion-surface interactions. These ion-surface interactions yield a non-linear boundary condition with an effective surface charge due to adsorption of ions from the bulk onto the interface. The calculation is done using the loop-expansion technique, where the zero-loop (mean field) corresponds of the non-linear Poisson-Boltzmann equation. The surface tension is obtained analytically to one-loop order, where the mean-field contribution is a modification of the Poisson-Boltzmann surface tension, and the one-loop contribution gives a generalization of the Onsager-Samaras result. Our theory fits well a wide range of different acids and salts, and is in accord with the reverse Hofmeister series for acids.

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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