Alexandre C. Foucher
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View article: Dynamic behavior of molecular Pd-acetate trimers and dimers in heterogeneous vinyl acetate synthesis
Dynamic behavior of molecular Pd-acetate trimers and dimers in heterogeneous vinyl acetate synthesis Open
Vinyl acetate monomer (VAM) is a crucial intermediate in the production of various polymers. While molecular Pd-acetate trimers and dimers, such as Pd3(OAc)6 and K2Pd2(OAc)6, are known…
View article: Reducing Coke and Increasing Bio-Oil Yield during Catalytic Fast Pyrolysis of Biomass Using Phosphorus-Modified Zeolite Catalysts
Reducing Coke and Increasing Bio-Oil Yield during Catalytic Fast Pyrolysis of Biomass Using Phosphorus-Modified Zeolite Catalysts Open
View article: Enhanced ferromagnetism in monolayer Cr<sub>2</sub>Te<sub>3</sub> via topological insulator coupling
Enhanced ferromagnetism in monolayer Cr<sub>2</sub>Te<sub>3</sub> via topological insulator coupling Open
Exchange-coupled interfaces are pivotal in exploiting two-dimensional (2D) ferromagnetism. Due to the extraordinary correlations among charge, spin, orbital and lattice degrees of freedom, layered magnetic transition metal chalcogenides (T…
View article: Correction to “Biomimetic Control over Bimetallic Nanoparticle Structure and Activity via Peptide Capping Ligand Sequence”
Correction to “Biomimetic Control over Bimetallic Nanoparticle Structure and Activity via Peptide Capping Ligand Sequence” Open
View article: Cu Based Dilute Alloys for Tuning the C<sub>2+</sub> Selectivity of Electrochemical CO<sub>2</sub> Reduction
Cu Based Dilute Alloys for Tuning the C<sub>2+</sub> Selectivity of Electrochemical CO<sub>2</sub> Reduction Open
Electrochemical CO 2 reduction is a promising technology for replacing fossil fuel feedstocks in the chemical industry but further improvements in catalyst selectivity need to be made. So far, only copper‐based catalysts have shown efficie…
View article: Anisotropic 2D van der Waals Magnets Hosting 1D Spin Chains
Anisotropic 2D van der Waals Magnets Hosting 1D Spin Chains Open
The exploration of 1D magnetism, frequently portrayed as spin chains, constitutes an actively pursued research field that illuminates fundamental principles in many‐body problems and applications in magnonics and spintronics. The inherent …
View article: Effect of Surface Oxidation and Crystal Thickness on the Magnetic Properties and Magnetic Domain Structures of Cr<sub>2</sub>Ge<sub>2</sub>Te<sub>6</sub>
Effect of Surface Oxidation and Crystal Thickness on the Magnetic Properties and Magnetic Domain Structures of Cr<sub>2</sub>Ge<sub>2</sub>Te<sub>6</sub> Open
van der Waals (vdW) magnetic materials, such as Cr2Ge2Te6 (CGT), show promise for memory and logic applications. This is due to their broadly tunable magnetic properties and the presence of topological magn…
View article: Biomimetic Control over Bimetallic Nanoparticle Structure and Activity via Peptide Capping Ligand Sequence
Biomimetic Control over Bimetallic Nanoparticle Structure and Activity via Peptide Capping Ligand Sequence Open
The controlled design of bimetallic nanoparticles (BNPs) is a key goal in tailoring their catalytic properties. Recently, biomimetic pathways demonstrated potent control over the distribution of different metals within BNPs, but a direct u…
View article: Understanding the fast kinetics and mechanism of sodium storage in antimony using <i>ab initio</i> grand canonical Monte Carlo simulation and <i>operando</i> X-ray scattering
Understanding the fast kinetics and mechanism of sodium storage in antimony using <i>ab initio</i> grand canonical Monte Carlo simulation and <i>operando</i> X-ray scattering Open
Using ai-GCMC simulations, operando WAXS, and kinetics analysis, we found that the high-rate performance of Sb as an alloy anode in Na-ion batteries is due to the presence of an amorphous intermediate phase formed during sodiation and deso…
View article: Structural changes in HfSe<sub>2</sub>and ZrSe<sub>2</sub>thin films with various oxidation methods
Structural changes in HfSe<sub>2</sub>and ZrSe<sub>2</sub>thin films with various oxidation methods Open
Plasma oxidation is the most efficient method to form defect-free oxide layers on top of HfSe 2 and ZrSe 2 transition metal dichalcogenides, whereas thermal oxidation causes the formation of defects and cavities in the oxide.
View article: Revealing the Nature of Active Oxygen Species and Reaction Mechanism of Ethylene Epoxidation by Supported Ag/α-Al<sub>2</sub>O<sub>3</sub> Catalysts
Revealing the Nature of Active Oxygen Species and Reaction Mechanism of Ethylene Epoxidation by Supported Ag/α-Al<sub>2</sub>O<sub>3</sub> Catalysts Open
The oxygen species on Ag catalysts and reaction mechanisms for ethylene epoxidation and ethylene combustion continue to be debated in the literature despite decades of investigation. Fundamental details of ethylene oxidation by supported A…
View article: Influence of Pd Concentration in Au–Pd Nanoparticles for the Hydrogenation of Alkynes
Influence of Pd Concentration in Au–Pd Nanoparticles for the Hydrogenation of Alkynes Open
Supported Au–Pd nanoparticles with low Pd content (between 2% and 25%) are excellent catalysts for the selective hydrogenation of alkynes into alkenes, a crucial step for elimination of alkynes from the reactants for olefin polymerization.…
View article: Identifying dynamic restructuring effects in nanocatalysts by combining in situ scanning transmission electron microscopy and in situ X-ray absorption spectroscopy: A review
Identifying dynamic restructuring effects in nanocatalysts by combining in situ scanning transmission electron microscopy and in situ X-ray absorption spectroscopy: A review Open
View article: The effect of surface oxidation and crystal thickness on magnetic properties and magnetic domain structures of Cr2Ge2Te6
The effect of surface oxidation and crystal thickness on magnetic properties and magnetic domain structures of Cr2Ge2Te6 Open
Van der Waals (vdW) magnetic materials such as Cr2Ge2Te6 (CGT) show promise for novel memory and logic applications. This is due to their broadly tunable magnetic properties and the presence of topological magnetic features such as skyrmio…
View article: Structure and stability of core-shell Cu-Pt nanoparticles for catalytic applications
Structure and stability of core-shell Cu-Pt nanoparticles for catalytic applications Open
We have successfully synthesized monodisperse core-shell Cu-Pt particles through a solvothermal method that enables control of the shell thickness to enhance the exposed Pt surface area and keep a narrow size distribution. The core-shell C…
View article: Carbon Vacancies Steer the Activity in Dual Ni Carbon Nitride Photocatalysis
Carbon Vacancies Steer the Activity in Dual Ni Carbon Nitride Photocatalysis Open
The manipulation of carbon nitride (CN) structures is one main avenue to enhance the activity of CN‐based photocatalysts. Increasing the efficiency of photocatalytic heterogeneous materials is a critical step toward the realistic implement…
View article: Synthesis of Mo4VAlC4 MAX Phase and Two-Dimensional Mo4VC4 MXene with Five Atomic Layers of Transition Metals
Synthesis of Mo4VAlC4 MAX Phase and Two-Dimensional Mo4VC4 MXene with Five Atomic Layers of Transition Metals Open
MXenes are a family of two-dimensional (2D) transition\nmetal carbides,\nnitrides, and carbonitrides with a general formula of Mn+1XnTx, in which two, three, or four atomic layers of a …
View article: Strain-tunable Berry curvature in quasi-two-dimensional chromium telluride
Strain-tunable Berry curvature in quasi-two-dimensional chromium telluride Open
Magnetic transition metal chalcogenides form an emerging platform for exploring spin-orbit driven Berry phase phenomena owing to the nontrivial interplay between topology and magnetism. Here we show that the anomalous Hall effect in pristi…
View article: Stable and efficient Ir nanoshells for oxygen reduction and evolution reactions
Stable and efficient Ir nanoshells for oxygen reduction and evolution reactions Open
We report the characterization and applications of core-shell Cu-Ir nanocatalysts for fuel cells. Core-shell Cu-Ir particles with tunable thickness of Ir can be oxidized to remove the Cu core and obtain Ir shells. The thickness of the Ir s…
View article: Optimization of Pd in Au-Pd nanoparticles for the hydrogenation of alkynes
Optimization of Pd in Au-Pd nanoparticles for the hydrogenation of alkynes Open
Supported Au-Pd nanoparticles are an excellent catalyst for the hydrogenation of alkynes, a crucial step for olefin polymerization. They have better selectivity at a high conversion rate for the hydrogenation of 1-hexyne compared to pure P…
View article: Synthesis and Characterization of Stable Cu-Pt Nanoparticles under Reductive and Oxidative Conditions
Synthesis and Characterization of Stable Cu-Pt Nanoparticles under Reductive and Oxidative Conditions Open
We report a synthesis method for highly monodisperse Cu-Pt alloy nanospheres. Small and large Cu-Pt particles with a Cu:Pt ratio of 1:1 can be obtained through colloidal synthesis at 300 °C. The fresh particles have a Pt-rich surface and a…
View article: Amino-tethering synthesis strategy toward highly accessible sub-3-nm L10-PtM catalysts for high-power fuel cells
Amino-tethering synthesis strategy toward highly accessible sub-3-nm L10-PtM catalysts for high-power fuel cells Open
View article: Identifying Dynamic Restructuring Effects in Nanocatalysts by Combining in Situ Scanning Transmission Electron Microscopy and in Situ X-Ray Absorption Spectroscopy: A Review
Identifying Dynamic Restructuring Effects in Nanocatalysts by Combining in Situ Scanning Transmission Electron Microscopy and in Situ X-Ray Absorption Spectroscopy: A Review Open
View article: Boosting the H<sub>2</sub>–D<sub>2</sub> Exchange Activity of Dilute Nanoporous Ti–Cu Catalysts through Oxidation–Reduction Cycle–Induced Restructuring
Boosting the H<sub>2</sub>–D<sub>2</sub> Exchange Activity of Dilute Nanoporous Ti–Cu Catalysts through Oxidation–Reduction Cycle–Induced Restructuring Open
The use of nanoporous metals as catalysts has attracted significant interest in recent years. Their high‐curvature, nanoscale ligaments provide not only high surface area but also a high density of undercoordinated step edge and kink sites…
View article: Kinetic control for planar oxidation of MoS$_2$
Kinetic control for planar oxidation of MoS$_2$ Open
Layered transition metal dichalcogenide (TMD) semiconductors oxidize readily in a variety of conditions, and a thorough understanding of this oxide formation is required for the advancement of TMD-based microelectronics. Here, we combine s…
View article: Micromagnetic and morphological characterization of heteropolymer human ferritin cores
Micromagnetic and morphological characterization of heteropolymer human ferritin cores Open
The physical properties of in vitro iron-reconstituted and genetically engineered human heteropolymer ferritins were investigated.
View article: Effect of Gold Catalyst Surface Morphology on Wetting Behavior and Electrochemical CO<sub>2</sub> Reduction Performance in a Large-Area Zero-Gap Gas Diffusion Electrolyzer
Effect of Gold Catalyst Surface Morphology on Wetting Behavior and Electrochemical CO<sub>2</sub> Reduction Performance in a Large-Area Zero-Gap Gas Diffusion Electrolyzer Open
We report catalyst surface area and wetting behavior are key factors in determining the performance of gas diffusion electrode (GDE) electrolyzers for electrochemical CO2 reduction. In this work, we report the integration of sub…
View article: Atomic-Scale STEM Analysis Shows Structural Changes of Au–Pd Nanoparticles in Various Gaseous Environments
Atomic-Scale STEM Analysis Shows Structural Changes of Au–Pd Nanoparticles in Various Gaseous Environments Open
We report dynamical restructuring effects in free-standing Au0.75Pd0.25 nanoparticles occurring in gaseous environments at elevated temperatures. The freshly prepared sample was found to have a core–shell structure wi…
View article: Efficient microwave absorption with Vn+1CnT MXenes
Efficient microwave absorption with Vn+1CnT MXenes Open
The availability of MXenes and other two-dimensional conductive nanomaterials with tunable surface chemistry has reshaped the field of electromagnetic protection. However, the high electrical conductivity and low dielectric loss of titaniu…
View article: Effect of Phosphate and Ferritin Subunit Composition on the Kinetics, Structure, and Reactivity of the Iron Core in Human Homo- and Heteropolymer Ferritins
Effect of Phosphate and Ferritin Subunit Composition on the Kinetics, Structure, and Reactivity of the Iron Core in Human Homo- and Heteropolymer Ferritins Open
Ferritins are highly conserved supramolecular protein nanostructures that play a key role in iron homeostasis. Thousands of iron atoms can be stored inside their hollow cavity as a hydrated ferric oxyhydroxide mineral. Although phosphate a…