skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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}
}