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Surface femtochemistry: Ultrafast reaction dynamics driven by hot electron mediated reaction pathways

Denzler, D. N. ; Hess, Christian ; Funk, S. ; Ertl, Gerhard ; Bonn, M. ; Frischkorn, C. ; Wolf, M.
ed.: Douhal, Abderrazzak (2002)
Surface femtochemistry: Ultrafast reaction dynamics driven by hot electron mediated reaction pathways.
In: Femtochemistry and Femtobiology: Ultrafast Dynamics in Molecular Science
doi: 10.1142/9789812777980_0063
Book Section, Bibliographie

Abstract

Fundamental insights into the ultrafast dynamics of energy transfer processes at surfaces are of central importance for a microscopic understanding of chemical reactions at solid surfaces, e.g. in heterogeneous catalysis. The detailed investigation of the rates and pathways of energy flow in the adsorbate–substrate system as well as the chemical dynamics has become possible utilizing intense femtosecond laser pulses. Surprisingly, the strong non–equilibrium situation that arises upon irradiation with these pulses results in a new reaction channel caused by hot electron excitation for a number of systems investigated. This electron–mediated reaction mechanism is exemplified here for the model reaction Had+Had → H₂,g on Ru(001) and discussed in the broader context of other simple reactions such as the formation of H₂O, CO₂ and the CO desorption on the same surface.

Item Type: Book Section
Erschienen: 2002
Editors: Douhal, Abderrazzak
Creators: Denzler, D. N. ; Hess, Christian ; Funk, S. ; Ertl, Gerhard ; Bonn, M. ; Frischkorn, C. ; Wolf, M.
Type of entry: Bibliographie
Title: Surface femtochemistry: Ultrafast reaction dynamics driven by hot electron mediated reaction pathways
Language: English
Date: May 2002
Place of Publication: Singapore
Publisher: World Scientific
Journal or Publication Title: Proceedings-Femtochemistry and Femtobiology: Ultrafast Dynamics in Molecular Science
Book Title: Femtochemistry and Femtobiology: Ultrafast Dynamics in Molecular Science
DOI: 10.1142/9789812777980_0063
Abstract:

Fundamental insights into the ultrafast dynamics of energy transfer processes at surfaces are of central importance for a microscopic understanding of chemical reactions at solid surfaces, e.g. in heterogeneous catalysis. The detailed investigation of the rates and pathways of energy flow in the adsorbate–substrate system as well as the chemical dynamics has become possible utilizing intense femtosecond laser pulses. Surprisingly, the strong non–equilibrium situation that arises upon irradiation with these pulses results in a new reaction channel caused by hot electron excitation for a number of systems investigated. This electron–mediated reaction mechanism is exemplified here for the model reaction Had+Had → H₂,g on Ru(001) and discussed in the broader context of other simple reactions such as the formation of H₂O, CO₂ and the CO desorption on the same surface.

Divisions: 07 Department of Chemistry
07 Department of Chemistry > Eduard Zintl-Institut
07 Department of Chemistry > Eduard Zintl-Institut > Physical Chemistry
Date Deposited: 28 Jul 2010 12:39
Last Modified: 15 Feb 2024 13:10
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