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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Lauritsen, Jeppe Vang
Aarhus University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (25/25 displayed)
- 2023Atomic-Scale Site Characterization of Cu-Zn Exchange on Cu(111)citations
- 2023Steering carbon dioxide reduction toward C–C coupling using copper electrodes modified with porous molecular filmscitations
- 2023The interface of in-situ grown single-layer epitaxial MoS2 on SrTiO3(001) and (111)citations
- 2022Iron carbide formation on thin iron films grown on Cu(1 0 0)citations
- 2022WO3 Monomers Supported on Anatase TiO2(101), −(001), and Rutile TiO2(110)citations
- 2022Can the CO 2 Reduction Reaction Be Improved on Cu:Selectivity and Intrinsic Activity of Functionalized Cu Surfacescitations
- 2022Can the CO2Reduction Reaction Be Improved on Cucitations
- 2021Nanoscale Chevrel-Phase Mo6S8Prepared by a Molecular Precursor Approach for Highly Efficient Electrocatalysis of the Hydrogen Evolution Reaction in Acidic Mediacitations
- 2020Molecular Nanowire Bonding to Epitaxial Single-Layer MoS2 by an On-Surface Ullmann Coupling Reactioncitations
- 2020Cubes on a string:a series of linear coordination polymers with cubane-like nodes and dicarboxylate linkerscitations
- 2019Anisotropic iron-doping patterns in two-dimensional cobalt oxide nanoislands on Au(111)citations
- 2019Structural and electronic properties of Fe dopants in cobalt oxide nanoislands on Au(111)citations
- 2018Phase Transitions of Cobalt Oxide Bilayers on Au(111) and Pt(111)citations
- 2018Topotactic Growth of Edge-Terminated MoS 2 from MoO 2 Nanocrystalscitations
- 2018Topotactic Growth of Edge-Terminated MoS2 from MoO2 Nanocrystalscitations
- 2017Gold-supported two-dimensional cobalt oxyhydroxide (CoOOH) and multilayer cobalt oxide islandscitations
- 2017Edge reactivity and water-assisted dissociation on cobalt oxide nanoislandscitations
- 2015Electronic Structure of Epitaxial Single-Layer MoS2citations
- 2015Noncontact AFM Imaging of Atomic Defects on the Rutile TiO2 (110) Surfacecitations
- 2015Electronic structure of epitaxial single-layer MoS2citations
- 2015Synthesis of Epitaxial Single-Layer MoS2 on Au(111)citations
- 2014Structure and Electronic Properties of In Situ Synthesized Single-Layer MoS2 on a Gold Surfacecitations
- 2014Structure and Electronic Properties of In Situ Synthesized Single-Layer MoS 2 on a Gold Surfacecitations
- 2011Atomic-scale non-contact AFM studies of alumina supported nanoparticles
- 2011Stabilization Principles for Polar Surfaces of ZnOcitations
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article
Phase Transitions of Cobalt Oxide Bilayers on Au(111) and Pt(111)
Abstract
<p>Well-characterized metal oxides supported on single crystal surfaces serve as valuable model systems to study fundamental chemical properties and reaction mechanisms in heterogeneous catalysis or as new thin film metal oxide catalysts in their own right. Here, we present scanning tunneling microscopy and X-ray photoelectron spectroscopy results for cobalt oxide nanoislands that reveal the detailed atomistic mechanisms leading to transitions between Co-O bilayer and O-Co-O trilayer, induced by oxidation in O<sub>2</sub> and reductive vacuum annealing treatments, respectively. By comparing between two different noble metal substrates, Au(111) and Pt(111), we further address the influence of the substrate. Overall, nanoisland edges act to initiate both the oxidation and reduction processes on both substrates. However, important influences of the choice of substrate were found, as the progress of oxidation includes intermediate steps on Au(111) not observed on Pt(111), where the oxidation on the other hand takes place at a significantly higher rate. During reductive treatment of trilayer, the bilayer structure gradually reappears on Pt(111), but not on Au(111) where the reduction rather results in the appearance of a stacked cobalt oxide morphology. These observations point to strong differences in the catalytic behavior between Au and Pt supported cobalt oxides, despite the otherwise strong structural similarities.</p>