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arXiv 2208.04072cond-mat.stat-mechphysics.chem-ph
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微观吸附动力学理论

Microscopic Theory of Adsorption Kinetics

Yuval Scher, Ofek Lauber Bonomo, Arnab Pal, Shlomi Reuveni

摘要:

吸附是溶质在溶液和另外的气体、液体或固体相之间形成的界面处的积聚。吸附的宏观理论可以追溯到一个多世纪以前,现在已经非常成熟。然而,尽管最近的进展,一个详细的和独立的单粒子吸附理论仍然缺乏。在这里,我们弥合这一差距,通过发展一个微观理论的吸附动力学,从宏观性能直接遵循。我们的主要成就之一是推导的microsopic版本的种子沃德-Tordai关系,它连接的表面和表面下的吸附物浓度通过一个通用的方程,适用于任意吸附动力学。此外,我们提出了一个微观解释的Ward-Tordai关系,反过来,使我们能够将其推广到任意尺寸,几何形状和初始条件。我们的方法的力量展示了一组迄今未解决的吸附问题,我们提出了精确的解析解。本文开发的框架揭示了吸附动力学的基本原理,这开辟了新的研究途径,在表面科学与人工和生物传感和纳米级器件的设计应用。

英文摘要:

Adsorption is the accumulation of a solute at an interface that is formed between a solution and an additional gas, liquid, or solid phase. The macroscopic theory of adsorption dates back more than a century and is now well-established. Yet, despite recent advancements, a detailed and self-contained theory of single-particle adsorption is still lacking. Here, we bridge this gap by developing a microscopic theory of adsorption kinetics, from which the macroscopic properties follow directly. One of our central achievements is the derivation of the microsopic version of the seminal Ward-Tordai relation which connects the surface and subsurface adsorbate concentrations via a universal equation that holds for arbitrary adsorption dynamics. Furthermore, we present a microscopic interpretation of the Ward-Tordai relation which, in turn, allows us to generalize it to arbitrary dimension, geometry and initial conditions. The power of our approach is showcased on a set of hitherto unsolved adsorption problems to which we present exact analytical solutions. The framework developed herein sheds fresh light on the fundamentals of adsorption kinetics, which opens new research avenues in surface science with applications to artificial and biological sensing and to the design of nano-scale devices.

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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