Hydrogen bonding, H/D exchange and diffusion in water films (? 2 monolayers) on TiO2(110) have been studied using water electron-stimulated desorption. For T 70 K, H/D exchange and molecular diffusion between these “layers” occur with a distribution of activation energies. The results demonstrate that all the water molecules that are directly bound to TiO2(110) – i.e. water in the first and second layers – are also hydrogen bonded to each other, thus influencing the chemistry of the water/TiO2(110) interface.
Revised: August 10, 2009 |
Published: November 9, 2007
Citation
Petrik N.G., and G.A. Kimmel. 2007.Hydrogen Bonding, H-D Exchange, and Molecular Mobility in Thin Water Films on TiO2(110).Physical Review Letters 99, no. 19:Art.No.196103.PNNL-SA-55179.doi:10.1103/PhysRevLett.99.196103