Structure of Water Adsorbed on a Mica Surface
Sungho ParkGeochemistry Department, Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA. [email protected]Garrison SpositoGeochemistry Department, Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720
2002en
ABI
Annotatsiya
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 A 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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