title: Carbon dioxide activation and reaction induced by electron transfer at an oxide-metal interface.
abstract: A model system has been created to shuttle electrons through a metal-insulator-metal (MIM) structure to induce the formation of a CO2 anion radical from adsorbed gas-phase carbon dioxide that subsequently reacts to form an oxalate species. The process is completely reversible, and thus allows the elementary steps involved to be studied at the atomic level. The oxalate species at the MIM interface have been identified locally by scanning tunneling microscopy, chemically by IR spectroscopy, and their formation verified by density functional calculations.
authors.affiliation: Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin (Germany). calaza@fhi-berlin.mpg.de.
authors.forename: Florencia
authors.initials: F
authors.lastname: Calaza
authors.affiliation: Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin (Germany).
authors.forename: Christian
authors.initials: C
authors.lastname: Stiehler
authors.affiliation: Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin (Germany).
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Fujimori
authors.affiliation: Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin (Germany).|Permanent address: Institute of Physics, University of Graz, 8010 Graz (Austria).
authors.forename: Martin
authors.initials: M
authors.lastname: Sterrer
authors.affiliation: Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin (Germany).
authors.forename: Sebastian
authors.initials: S
authors.lastname: Beeg
authors.affiliation: Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin (Germany).
authors.forename: Miguel
authors.initials: M
authors.lastname: Ruiz-Oses
authors.affiliation: Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin (Germany).|Permanent address: Institute of Physics, Carl von Ossietzky Universität Oldenburg, 26111 Oldenburg (Germany).
authors.forename: Niklas
authors.initials: N
authors.lastname: Nilius
authors.affiliation: Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin (Germany).
authors.forename: Markus
authors.initials: M
authors.lastname: Heyde
authors.affiliation: Department of Physics, Nanoscience Center, University of Jyväskylä, 40014 Jyväskylä (Finland).
authors.forename: Teemu
authors.initials: T
authors.lastname: Parviainen
authors.affiliation: Department of Chemistry, Nanoscience Center, University of Jyväskylä" 40014 Jyväskylä (Finland).
authors.forename: Karoliina
authors.initials: K
authors.lastname: Honkala
authors.affiliation: Department of Physics, Nanoscience Center, University of Jyväskylä, 40014 Jyväskylä (Finland).|Department of Chemistry, Nanoscience Center, University of Jyväskylä" 40014 Jyväskylä (Finland).
authors.forename: Hannu
authors.initials: H
authors.lastname: Häkkinen
authors.affiliation: Department of Chemical Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin (Germany).
authors.forename: Hans-Joachim
authors.initials: HJ
authors.lastname: Freund
keywords: carbon dioxide; electron transfer; metal-insulator-metal structure; oxalate; oxygen