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The adsorption of water on Ni(110): Monolayer, bilayer and related phenomena |
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| Authors: | B W Callen K Griffiths and U Memmert D A Harrington S J Bushby and P R Norton |
| Institution: | Interface Science Western, Departments of Chemistry and Physics, The University of Western Ontario, London, Canada N6A 5B7 Department of Chemistry, University of Victoria, Victoria, British Columbia, Canada Interface Science Western, Departments of Chemistry and Physics, The University of Western Ontario, London, Canada N6A 5B7 |
| Abstract: | The adsorption of water of Ni(110) has been studied by nuclear reaction analysis (NRA), thermal desorption spectroscopy (TDS), LEED and work function measurements (Δφ). The major findings of this study are: (1) the saturation coverage of the first chemisorbed layer of water is slightly less than 0.5 water molecules per surface Ni atom or 0.5 ML (1 ML = 1 MONOLAYER = 1.14 × 1015 molecules cm?2) and the layer exhibits a c(2 × 2) LEED pattern; (2) this water desorbs in three separate desorption states; (3) the slightly less strongly bound, second layer of water can be distinguished from subsequent “ice” layers by a discrete work function change. These results are discussed in terms of a recently published model of Benndorf and Madey C. Benndorf and T.E. Madey, Surf. Sci. 194 (1988) 63]. |
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