Effect of H2SO4 and alkali metal SO42-/HSO4- salt solutions on surface water molecules using sum frequency generation

被引：61

作者：

Baldelli, S ^{[1
]}

Schnitzer, C ^{[1
]}

Campbell, DJ ^{[1
]}

Shultz, MJ ^{[1
]}

机构：

[1] Tufts Univ, Dept Chem, Medford, MA 02155 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1999年 / 103卷 / 14期

关键词：

D O I：

10.1021/jp9843353

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The surface-specific vibrational spectroscopy, sum frequency generation, has been used to study:he structure of water at air/liquid interfaces of inorganic, ionic solutions. The experiments suggest that ions in solution reorient surface water into a more structured, hydrogen-bonded network compared with the neat water/air interface. In more concentrated solutions, there is a high degree of ion association. A model based on Hard Soft Acid Base theory indicates that associated ions are able to penetrate closer to the air interface than unassociated ions. Associated ions incorporate surface water into the ion-pair hydration shell.

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页码：2789 / 2795

页数：7

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