Abstract
We report different wetting properties of Cu(110) and Cu(111) at near-ambient conditions using in situ photoemission spectroscopy. At near-ambient conditions of pressure (1 Torr) and temperature (295 K), the Cu( 110) surface is covered with a mixed OH and H2O layer, whereas the Cu(111) surface remains clean and adsorbate-free. We show that wetting is controlled by the presence of OH groups on the surface, acting as anchors for water adsorption. Hydroxylation of the Cu(110) surface is facilitated by a lower activation barrier for water dissociation compared to Cu(111).
Original language | English |
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Pages (from-to) | 7848-7850 |
Number of pages | 3 |
Journal | Journal of Physical Chemistry C |
Volume | 111 |
Issue number | 22 |
DOIs | |
Publication status | Published - 2007 Jun 7 |