Wettability and chemical bonding of water and hydroxyl at metal surfaces

Schiros, Theanne1; Näslund, L.-Å.2; Andersson, Klas3; Odelius, Michael1; Yamamoto, Susumu2; Karlberg, G.S.3; Öström, H.1; Ogasawara, H.2; Pettersson, L.G.M.1; Nilsson, A.2 1Sweden; 2United States; 3Denmark

The nature of the chemical bonding and structure of water and water coadsorbed with hydroxyl at metal surfaces is of immense relevance to a number of important reactions in heterogenous catalysis, including the water gas shift reaction over Cu and the fuel cell reaction over Pt and related alloys. We have combined core level x-ray spectroscopy with density functional theory to derive a detailed picture and comparison of the interaction of water and water plus hydroxyl with different metal surfaces, including Cu(110), Cu(111) and Pt(111).

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