Journal ArticleDOI
Alkali-promoted stabilization of subsurface oxygen on Cu(1 1 1)
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In this article, the coadsorption of alkalis (Na, K) with O on Cu(1 1 1) and Ni(1/1) surfaces was studied by vibrational measurements.About:
This article is published in Chemical Physics.The article was published on 2010-02-08. It has received 11 citations till now. The article focuses on the topics: Population & Oxygen.read more
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Plasma-Activated Copper Nanocube Catalysts for Efficient Carbon Dioxide Electroreduction to Hydrocarbons and Alcohols
Dungfeng Gao,Ioannis Zegkinoglou,Núria J. Divins,Fabian Scholten,Ilya Sinev,Phillipp Grosse,Beatriz Roldan Cuenya +6 more
TL;DR: This work has developed highly active and selective copper nanocube catalysts with tunable Cu(100) facet and oxygen/chlorine ion content by low-pressure plasma pretreatments, demonstrating that the catalyst shape, ion content, and ion stability under electrochemical reaction conditions can be systematically tuned through plasma treatments.
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Vibrational spectroscopy and theory of alkali metal adsorption and co-adsorption on single-crystal surfaces
Antonio Politano,Gennaro Chiarello,Giorgio Benedek,Giorgio Benedek,Eugene V. Chulkov,Eugene V. Chulkov,Eugene V. Chulkov,Pedro M. Echenique,Pedro M. Echenique +8 more
TL;DR: In this paper, the vibrational properties of AM on metal surfaces have been investigated, and the two principal experimental techniques for studying the vibrations of AM adsorbed phases are high-resolution electron energy loss spectroscopy (HREELS) and inelastic helium atom scattering (HAS).
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Multiple acoustic surface plasmons in graphene/Cu(111) contacts
TL;DR: In this article, the authors investigated the mutual interaction between the acoustic surface plasmons (ASP) of the graphene overlayer and that of the underlying Cu(111) substrate, and found that the damping processes of ASP are mitigated as compared to the cases of other graphene/metal interfaces.
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Vibrational Investigation of Catalyst Surfaces: Change of the Adsorption Site of CO Molecules upon Coadsorption
TL;DR: In this article, the authors used vibrational spectroscopy to identify adsorption sites in coadsorption systems on catalyst surfaces, and showed that the preferential sites are the 3-fold hollows on the Ni(111 and Ni(100) surfaces.
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Spectroscopic Investigations of Phonons in Epitaxial Graphene
TL;DR: In this article, the vibrational characterization by means of various inelastic scattering spectroscopies is surveyed for graphene epitaxially grown on metals and transition carbides. And the manifestations of electron-phonon interaction, such as Kohn anomalies, the evaluation of elastic properties and the nanoscale control of phonon modes are presented and discussed.
References
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Journal ArticleDOI
The roles of subsurface carbon and hydrogen in palladium-catalyzed alkyne hydrogenation.
Detre Teschner,Janos Borsodi,Attila Wootsch,Zsolt Révay,Michael Hävecker,Axel Knop-Gericke,S. David Jackson,Robert Schlögl +7 more
TL;DR: The population of subsurface sites of palladium, by either hydrogen or carbon, governs the hydrogenation events on the surface, and unselective hydrogenation proceeds on hydrogen-saturated β-hydride whereas selective hydrogenation was only possible after decoupling bulk properties from the surface events.
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Surface and subsurface hydrogen: adsorption properties on transition metals and near-surface alloys.
Jeffrey Greeley,Manos Mavrikakis +1 more
TL;DR: Periodic, self-consistent DFT-GGA calculations are used to study the thermochemical properties of both surface and subsurface atomic hydrogen on a variety of pure metals and near-surface alloys (NSAs).
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Methanol Oxidation on a Copper Catalyst Investigated Using in Situ X-ray Photoelectron Spectroscopy†
Hendrik Bluhm,Michael Hävecker,Axel Knop-Gericke,Evgueni Kleimenov,Robert Schlögl,Detre Teschner,Valerii I. Bukhtiyarov,D. Frank Ogletree,Miquel Salmeron +8 more
TL;DR: In this article, the surface and near-surface regions of an active catalyst and the adjacent gas-phase reactants were investigated simultaneously under reaction conditions using in situ X-ray photoelectron spectroscopy (XPS).
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Formation of subsurface oxygen species and its high activity toward CO oxidation over silver catalysts
TL;DR: In this paper, the catalytic activity of silver catalysts toward co-gelective oxidation in h-2 was investigated, and it was observed that adsorbed co on the surface of silver particles can directly react with subsurface oxygen species at low temperatures.
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Effect of subsurface oxygen on the reactivity of the Ag(111) surface.
TL;DR: These findings point to the important role that near-surface impurities, such as O(sb), can play in determining the thermochemistry and kinetics of elementary steps catalyzed by transition metal surfaces.