Ions at the Air-Water Interface: An End to a Hundred-Year-Old Mystery?

被引：290

作者：

Levin, Yan ^{[1
]}

dos Santos, Alexandre P. ^{[1
]}

Diehl, Alexandre ^{[2
]}

机构：

[1] Univ Fed Rio Grande do Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil

[2] Univ Fed Pelotas, Dept Fis, Inst Fis & Matemat, BR-96010900 Pelotas, RS, Brazil

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 25期

关键词：

MOLECULAR-DYNAMICS SIMULATIONS; AQUEOUS-ELECTROLYTE SOLUTIONS; SURFACE-TENSION; AIR/WATER INTERFACE; THERMODYNAMIC QUANTITIES; SALT-SOLUTIONS; CLUSTERS; SPECTROSCOPY; SOLVATION; HYDRATION;

D O I：

10.1103/PhysRevLett.103.257802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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 Letter 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.

引用

页数：4

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