Water and ions at interfaces

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• 作者：Netz ; Roland R.
• 关键词：Water ; Ion ; Quantum chemistry
• 刊名：Current Opinion in Colloids and Interface Science
• 出版年：2004
• 出版时间：August, 2004
• 年：2004
• 卷：9
• 期：1-2
• 页码：192-197
• 全文大小：272 K

文摘

Experiments and simulations show that water at hydrophobic substrates forms a few Angstrom-thick vacuum layer. The top water layer is oriented, giving rise to a sizeable dipole moment and thus a potential drop, favoring the adsorption of negative ions. Ab-initio quantum chemistry methods allow to calculate the interactions between ions and ionic properties such as ionization potentials and polarizabilities, important for the prediction of ionic interfacial density profiles.