Crystalline ice growth on PT(111): observation of a hydrophobic water monolayer.
The growth of crystalline water films on Pt(111) is investigated using rare gas physisorption. The water monolayer wets Pt(111) at all temperatures investigated (20-155 K). At low temperatures (T< or =120 K), additional water layers kinetically wet the monolayer surface. However, crystalline ice films grown at higher temperatures (T > 135 K) do not wet the water monolayer. These results are consistent with recent theory and experiments suggesting that the molecules in the water monolayer form a surface with no dangling OH bonds or lone pair electrons, giving rise to a hydrophobic water monolayer on Pt(111).
Kimmel
Greg A
GA
Pacific Northwest National Laboratory, Chemical Sciences Division, Richland, Washington 99352, USA.
Petrik
Nikolay G
NG
Dohnálek
Zdenek
Z
Kay
Bruce D
BD