Structure of water adsorbed on a mica surface

被引:172
作者
Park, SH [1 ]
Sposito, G [1 ]
机构
[1] Lawrence Berkeley Natl Lab, Div Earth Sci, Dept Geochem, Berkeley, CA 94720 USA
关键词
D O I
10.1103/PhysRevLett.89.085501
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Monte Carlo simulations of hydration water on the mica (001) surface under ambient conditions revealed water molecules bound closely to the ditrigonal cavities in the surface, with a lateral distribution of approximately one per cavity, and water molecules (interposed between K+ counter ions) in a layer situated about 2.5 Angstrom from a surface O along a direction normal to the (001) plane. The calculated water O density profile was in quantitative agreement with recent x-ray reflectivity measurements indicating strong lateral ordering of the hydration water but liquidlike disorder otherwise.
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页数:3
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