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Unusual process of water formation on RuO2(110) by hydrogen exposure at room temperature

Knapp, M. ; Crihan, D. ; Seitsonen, A. P. ; Resta, Andrea LU ; Lundgren, Edvin LU ; Andersen, Jesper N LU ; Schmid, M. ; Varga, P. and Over, H. (2006) In The Journal of Physical Chemistry Part B 110(29). p.14007-14010
Abstract
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 (O-br-H) species and subsequently part of these O-br-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.
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author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
The Journal of Physical Chemistry Part B
volume
110
issue
29
pages
14007 - 14010
publisher
The American Chemical Society (ACS)
external identifiers
  • wos:000239141800001
  • scopus:33746881427
ISSN
1520-5207
DOI
10.1021/jp0626622
language
English
LU publication?
yes
id
9c2dce8d-1767-4193-b53a-8f4de451ef24 (old id 401307)
date added to LUP
2016-04-01 16:38:55
date last changed
2021-09-29 05:31:48
@article{9c2dce8d-1767-4193-b53a-8f4de451ef24,
  abstract     = {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 (O-br-H) species and subsequently part of these O-br-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.},
  author       = {Knapp, M. and Crihan, D. and Seitsonen, A. P. and Resta, Andrea and Lundgren, Edvin and Andersen, Jesper N and Schmid, M. and Varga, P. and Over, H.},
  issn         = {1520-5207},
  language     = {eng},
  number       = {29},
  pages        = {14007--14010},
  publisher    = {The American Chemical Society (ACS)},
  series       = {The Journal of Physical Chemistry Part B},
  title        = {Unusual process of water formation on RuO2(110) by hydrogen exposure at room temperature},
  url          = {http://dx.doi.org/10.1021/jp0626622},
  doi          = {10.1021/jp0626622},
  volume       = {110},
  year         = {2006},
}