Acidic Water Monolayer on Ruthenium(0001)


  • This work was supported by the National Research Foundation grant funded by the Korea government (MEST; 2007-0056333).


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Acidic water: The first monolayer of water on a Ru(0001) surface is anomalously acidic compared to bulk water, according to infrared and mass spectroscopic investigations of the water layer using ammonia as a probe for surface acidity. The observation suggests that acid–base chemistry may be quite different at the water–metal interfaces than in aqueous solution.