期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 10, 期 32, 页码 4975-4980出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b806432f
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The behavior of hydronium and hydroxide ions at the water/alkane, water/vapor, and water/rigid wall interfaces was investigated by means of molecular dynamics simulations. All these interfaces exhibit a strong affinity for hydronium, which is in agreement with spectroscopic and low pH zeta-potential measurements. Except for the water/rigid wall interface, which strongly structures water and weakly attracts OH-, none of the other investigated interfaces shows an appreciable accumulation of hydroxide. This computational result is at odds with the interpretation of higher pH zeta-potential and titration experiments, however, it is supported by surface selective spectroscopies of the surface of water and hydroxide solutions.
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