空气-水界面的离子:百年之谜的终结?
Ions at the air-water interface: An end to one hundred year old mystery?
摘要:
气溶胶表面存在的高活性卤素离子对大气化学有着巨大的影响。然而,无论是模拟,实验,或现有的理论都不能提供一个完全一致的描述电解质-空气界面。在本文中,提出了一个新的理论,它使我们能够明确地计算离子密度分布,表面张力,和静电电势差在溶液-空气界面。的理论预测进行了比较实验,并发现是非常一致的。该理论还为物理化学中最古老的难题之一--霍夫迈斯特效应--提供了新的线索。
英文摘要:
Availability of highly reactive halogen ions at the surface of aerosols has tremendous implications for the atmospheric chemistry. Yet neither simulations, experiments, nor existing theories are able to provide a fully consistent description of the electrolyte-air interface. In this paper a new theory is proposed which allows us to explicitly calculate the ionic density profiles, the surface tension, and the electrostatic potential difference across the solution-air interface. Predictions of the theory are compared to experiments and are found to be in excellent agreement. The theory also sheds new light on one of the oldest puzzles of physical chemistry -- the Hofmeister effect.
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