Adsorption of water on O(2x2)/Ru(0001): thermal stability and inhibition of dissociation by H2O-O bonding
Abstract
The effect of preadsorbed oxygen on the subsequent adsorption and reactions of water on Ru(0001) has been studied using low temperature scanning tunneling microscopy and DFT calculations. Experiments were carried out for O coverages close to 0.25 ML. It was found that no dissociation of water takes place up to the desorption temperature of {approx}180-230 K. DFT calculations show that intact water on O(2x2)/Ru(0001) is {approx} 0.49 eV more stable than the dissociation products, H and OH, at their preferred fcc and top adsorption sites.
- Authors:
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- Materials Sciences Division
- OSTI Identifier:
- 946148
- Report Number(s):
- LBNL-1387E
Journal ID: ISSN 0022-3654; JPCHAX; TRN: US200903%%256
- DOE Contract Number:
- DE-AC02-05CH11231
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Physical Chemistry
- Additional Journal Information:
- Journal Name: Journal of Physical Chemistry; Journal ID: ISSN 0022-3654
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36; ADSORPTION; BONDING; DESORPTION; DISSOCIATION; OXYGEN; SCANNING TUNNELING MICROSCOPY; STABILITY; WATER
Citation Formats
Mugarza, Aitor, Shimizu, Tomoko, Cabrera-Sanfelix, Pepa, Sanchez-Portal, Daniel, Arnau, Andres, and Salmeron, Miquel. Adsorption of water on O(2x2)/Ru(0001): thermal stability and inhibition of dissociation by H2O-O bonding. United States: N. p., 2008.
Web.
Mugarza, Aitor, Shimizu, Tomoko, Cabrera-Sanfelix, Pepa, Sanchez-Portal, Daniel, Arnau, Andres, & Salmeron, Miquel. Adsorption of water on O(2x2)/Ru(0001): thermal stability and inhibition of dissociation by H2O-O bonding. United States.
Mugarza, Aitor, Shimizu, Tomoko, Cabrera-Sanfelix, Pepa, Sanchez-Portal, Daniel, Arnau, Andres, and Salmeron, Miquel. 2008.
"Adsorption of water on O(2x2)/Ru(0001): thermal stability and inhibition of dissociation by H2O-O bonding". United States. https://www.osti.gov/servlets/purl/946148.
@article{osti_946148,
title = {Adsorption of water on O(2x2)/Ru(0001): thermal stability and inhibition of dissociation by H2O-O bonding},
author = {Mugarza, Aitor and Shimizu, Tomoko and Cabrera-Sanfelix, Pepa and Sanchez-Portal, Daniel and Arnau, Andres and Salmeron, Miquel},
abstractNote = {The effect of preadsorbed oxygen on the subsequent adsorption and reactions of water on Ru(0001) has been studied using low temperature scanning tunneling microscopy and DFT calculations. Experiments were carried out for O coverages close to 0.25 ML. It was found that no dissociation of water takes place up to the desorption temperature of {approx}180-230 K. DFT calculations show that intact water on O(2x2)/Ru(0001) is {approx} 0.49 eV more stable than the dissociation products, H and OH, at their preferred fcc and top adsorption sites.},
doi = {},
url = {https://www.osti.gov/biblio/946148},
journal = {Journal of Physical Chemistry},
issn = {0022-3654},
number = ,
volume = ,
place = {United States},
year = {Fri Aug 01 00:00:00 EDT 2008},
month = {Fri Aug 01 00:00:00 EDT 2008}
}
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