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RESEARCH PRODUCT

Carbon Dioxide Activation and Reaction Induced by Electron Transfer at an Oxide-Metal Interface

Niklas NiliusMarkus HeydeYuichi FujimoriKaroliina HonkalaChristian StiehlerMartin SterrerHannu HäkkinenTeemu ParviainenM. Ruiz-osesSebastian BeegFlorencia CalazaHans-joachim Freund

subject

oxalateta114Inorganic chemistryOxidecarbon dioxideInfrared spectroscopychemistry.chemical_elementGeneral Chemistryelectron transferOxygenmetal-insulator-metal structureCatalysisOxalateIonlaw.inventionMetalElectron transferchemistry.chemical_compoundchemistrylawvisual_artvisual_art.visual_art_mediumScanning tunneling microscopeta116oxygen

description

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.

https://doi.org/10.1002/anie.201501420