David Kordus
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View article: Metastable Crystalline Cobalt Iron Oxide Nano‐Flakes with Antiferromagnetic/Ferrimagnetic Composition Mosaicity
Metastable Crystalline Cobalt Iron Oxide Nano‐Flakes with Antiferromagnetic/Ferrimagnetic Composition Mosaicity Open
By thermal decomposition of a crystalline hydroxycarbonate precursor with a Co:Fe ratio of 2:1, crystals with alternating ferrimagnetic and antiferromagnetic nano‐domains were synthesized using a facile synthetic approach that combined bot…
View article: Cu–Ga Interactions and Support Effects in CO<sub>2</sub> Hydrogenation to Methanol Catalyzed by Size-Controlled CuGa Nanoparticles Deposited on SiO<sub>2</sub> and ZnO
Cu–Ga Interactions and Support Effects in CO<sub>2</sub> Hydrogenation to Methanol Catalyzed by Size-Controlled CuGa Nanoparticles Deposited on SiO<sub>2</sub> and ZnO Open
Growing environmental concerns have led to a need for the reduction of CO2 emissions and the search for alternative fuels. The synthesis of methanol via the CO2 hydrogenation reaction provides a promising approach for these tasks. Promotin…
View article: The Haber Bosch Catalyst from Solid state Chemistry to Mesotechnology
The Haber Bosch Catalyst from Solid state Chemistry to Mesotechnology Open
Ammonia is industrially synthesized over multi‐promoted Fe‐based catalysts for more than a century. Although ammonia synthesis reflects a prototypical catalytic reaction, rational catalyst design is still impossible as the full structural …
View article: X-ray absorption by a microgranular sample
X-ray absorption by a microgranular sample Open
Sample homogeneity on the microscopic scale is critical for the reliable interpretation of x-ray absorption spectra collected in transmission mode. Unfortunately, it is not always easy to ensure it in practice. Especially in studies of cat…
View article: Promoting H <sub>2</sub> O <sub>2</sub> direct synthesis through Fe incorporation into AuPd catalysts
Promoting H <sub>2</sub> O <sub>2</sub> direct synthesis through Fe incorporation into AuPd catalysts Open
The incorporation of Fe into bimetallic AuPd nanoalloys significantly improves catalytic performance towards H 2 O 2 direct synthesis via the electronic modification of Pd species.
View article: Effect of Iron Doping in Ordered Nickel Oxide Thin Film Catalyst for the Oxygen Evolution Reaction
Effect of Iron Doping in Ordered Nickel Oxide Thin Film Catalyst for the Oxygen Evolution Reaction Open
Water splitting has emerged as a promising route for generating hydrogen as an alternative to conventional production methods. Finding affordable and scalable catalysts for the anodic half-reaction, the oxygen evolution reaction (OER), cou…
View article: Enhanced Methanol Synthesis from CO<sub>2</sub> Hydrogenation Achieved by Tuning the Cu–ZnO Interaction in ZnO/Cu<sub>2</sub>O Nanocube Catalysts Supported on ZrO<sub>2</sub> and SiO<sub>2</sub>
Enhanced Methanol Synthesis from CO<sub>2</sub> Hydrogenation Achieved by Tuning the Cu–ZnO Interaction in ZnO/Cu<sub>2</sub>O Nanocube Catalysts Supported on ZrO<sub>2</sub> and SiO<sub>2</sub> Open
[Image: see text] The nature of the Cu–Zn interaction and especially the role of Zn in Cu/ZnO catalysts used for methanol synthesis from CO(2) hydrogenation are still debated. Migration of Zn onto the Cu surface during reaction results in …
View article: Time-resolved <i>operando</i> insights into the tunable selectivity of Cu–Zn nanocubes during pulsed CO<sub>2</sub> electroreduction
Time-resolved <i>operando</i> insights into the tunable selectivity of Cu–Zn nanocubes during pulsed CO<sub>2</sub> electroreduction Open
Electrochemical CO 2 reduction using CuZn nanocubes boosted ethanol selectivity when pulsed in the oxidation regime of zinc, while time-resolved operando techniques uncovered the key roles of dynamic zinc oxide formation and hydroxide cove…
View article: <i>Operando</i> insights into correlating CO coverage and Cu–Au alloying with the selectivity of Au NP-decorated Cu<sub>2</sub>O nanocubes during the electrocatalytic CO<sub>2</sub> reduction
<i>Operando</i> insights into correlating CO coverage and Cu–Au alloying with the selectivity of Au NP-decorated Cu<sub>2</sub>O nanocubes during the electrocatalytic CO<sub>2</sub> reduction Open
Adding small amounts of Au Nanoparticles on Cu 2 O Nanocubes boost the selectivity of C 2+ products during electrocatalytic CO 2 reduction reaction.
View article: Shape-Dependent CO<sub>2</sub> Hydrogenation to Methanol over Cu<sub>2</sub>O Nanocubes Supported on ZnO
Shape-Dependent CO<sub>2</sub> Hydrogenation to Methanol over Cu<sub>2</sub>O Nanocubes Supported on ZnO Open
The hydrogenation of CO2 to methanol over Cu/ZnO-based catalysts is highly sensitive to the surface composition and catalyst structure. Thus, its optimization requires a deep understanding of the influence of the pre-catalyst structure on …
View article: Role of the Oxide Support on the Structural and Chemical Evolution of Fe Catalysts during the Hydrogenation of CO<sub>2</sub>
Role of the Oxide Support on the Structural and Chemical Evolution of Fe Catalysts during the Hydrogenation of CO<sub>2</sub> Open
Iron-based catalysts are considered active for the hydrogenation of CO2 toward high-order hydrocarbons. Here, we address the structural and chemical evolution of oxide-supported iron nanoparticles (NPs) during the activation stages and dur…
View article: Surface Segregation in CuNi Nanoparticle Catalysts During CO<sub>2</sub> Hydrogenation: The Role of CO in the Reactant Mixture
Surface Segregation in CuNi Nanoparticle Catalysts During CO<sub>2</sub> Hydrogenation: The Role of CO in the Reactant Mixture Open
Surface segregation and restructuring in size-selected CuNi nanoparticles were investigated via near-ambient pressure X-ray photoelectron spectroscopy (NAP-XPS) at various temperatures in different gas environments. Particularly in focus w…