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APS » Journals » Phys. Rev. Lett. » Volume 89 » Issue 27
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Phys. Rev. Lett. 89, 276102 (2002) [4 pages]

Structure and Bonding of Water on Pt(111)

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H. Ogasawara1, B. Brena1, D. Nordlund1,2, M. Nyberg1, A. Pelmenschikov1, L. G. M. Pettersson1, and A. Nilsson1,3
1FYSIKUM, Stockholm University, Albanova University Center, S-10691 Stockholm, Sweden
2Department of Physics, Uppsala University, Box 530, S-75121 Uppsala, Sweden
3Stanford Synchrotron Radiation Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025

Received 26 August 2002; published 18 December 2002

See accompanying Physics Focus

We address the adsorption of water on Pt(111) using x-ray absorption, x-ray emission, and x-ray photoelectron spectroscopy along with calculations in the framework of density functional theory. Using the direct relationship between the electronic structure and adsorbate geometry, we show that in the first layer all the molecules bind directly to the surface and to each other through the in-layer H bonds without dissociation, creating a nearly flat overlayer. The water molecules are adsorbed through alternating metal-oxygen (M-O) and metal-hydrogen (M-HO) bonds.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.276102
DOI:
10.1103/PhysRevLett.89.276102
PACS:
68.43.–h, 73.20.Hb, 82.45.Jn, 82.65.+r
 
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