Adsorption of water on O(2×2)/Ru(0001): Thermal stability and inhibition of dissociation

Aitor Mugarza; Tomoko K. Shimizu; Pepa Cabrera-Sanfelix; Daniel Sánchez-Portal; Andres Arnau; Miquel Salmeron

doi:10.1021/jp8026622

Adsorption of water on O(2×2)/Ru(0001): Thermal stability and inhibition of dissociation

Aitor Mugarza, Tomoko K. Shimizu, Pepa Cabrera-Sanfelix, Daniel Sánchez-Portal, Andres Arnau, Miquel Salmeron

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

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 #180-230 K. DFT calculations show that intact water on O(2 × 2)/Ru(0001) is #0.49 eV more stable than the dissociation products, H and OH, at their preferred fee and top adsorption sites.

Original language	English
Pages (from-to)	14052-14057
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	112
Issue number	36
DOIs	https://doi.org/10.1021/jp8026622
Publication status	Published - 2008 Sep 11
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Energy(all)
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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10.1021/jp8026622

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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 #180-230 K. DFT calculations show that intact water on O(2 × 2)/Ru(0001) is #0.49 eV more stable than the dissociation products, H and OH, at their preferred fee and top adsorption sites.",

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T2 - Thermal stability and inhibition of dissociation

AU - Mugarza, Aitor

AU - Shimizu, Tomoko K.

AU - Cabrera-Sanfelix, Pepa

AU - Sánchez-Portal, Daniel

AU - Arnau, Andres

AU - Salmeron, Miquel

PY - 2008/9/11

Y1 - 2008/9/11

N2 - 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 #180-230 K. DFT calculations show that intact water on O(2 × 2)/Ru(0001) is #0.49 eV more stable than the dissociation products, H and OH, at their preferred fee and top adsorption sites.

AB - 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 #180-230 K. DFT calculations show that intact water on O(2 × 2)/Ru(0001) is #0.49 eV more stable than the dissociation products, H and OH, at their preferred fee and top adsorption sites.

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JO - Journal of Physical Chemistry C

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SN - 1932-7447

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Adsorption of water on O(2×2)/Ru(0001): Thermal stability and inhibition of dissociation

Abstract

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