Publications in Scientific Journals:
M. Knapp, D. Crihan, A.P. Seitsonen, A. Resta, E. Lundgren, J.N. Andersen, M. Schmid, P. Varga, H. Over:
"Unusual Process of Water Formation on RuO2(110) by Hydrogen Exposure at Room Temperature";
Journal of Physical Chemistry B,
The reduction mechanism of the RuO2(110) surface by molecular hydrogen exposure is unraveled to an unprecedented level by a combination of temperature programmed reaction, scanning tunneling microscopy, high-resolution core level shift spectroscopy, and density functional theory calculations. We demonstrate that even at room temperature hydrogen exposure to the RuO2(110) surface leads to the formation of water. In a two-step process, hydrogen saturates first the bridging oxygen atoms to form (Obr-H) species and subsequently part of these Obr-H groups move to the undercoordinated Ru atoms where they form adsorbed water. This latter process is driven by thermodynamics, leaving vacancies in the bridging O rows.
Corresponding author: H. Over. Reprints also available from M. Schmid (schmid).
Users with online access to J. Phys. Chem. B can load the article from the publisher.
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Created from the Publication Database of the Vienna University of Technology.