A5075528290- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Electrocatalysts for Energy Conversion
- Advanced Photocatalysis Techniques
- Catalysis and Hydrodesulfurization Studies
- Surface Chemistry and Catalysis
- Surface and Thin Film Phenomena
- Graphene research and applications
- TiO2 Photocatalysis and Solar Cells
- Chalcogenide Semiconductor Thin Films
- Molecular Junctions and Nanostructures
- Catalysis for Biomass Conversion
- Catalysts for Methane Reforming
- Cardiac Arrest and Resuscitation
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Quantum and electron transport phenomena
- Electron and X-Ray Spectroscopy Techniques
- Quantum Dots Synthesis And Properties
- Advanced Nanomaterials in Catalysis
- Mesoporous Materials and Catalysis
- Covalent Organic Framework Applications
- Advanced Chemical Physics Studies
- Superconductivity in MgB2 and Alloys
- Physics of Superconductivity and Magnetism
Catalyse
2020-2024
Centre National de la Recherche Scientifique
2015-2024
Université Claude Bernard Lyon 1
2015-2024
Christiana Care Health System
2022-2024
Institut de Recherches sur la Catalyse et l'Environnement de Lyon
2015-2024
Tecnológico de Monterrey
2024
Nanjing Medical University
2023
Chinese Academy of Medical Sciences & Peking Union Medical College
2023
Xavier University
2022
Herman Miller (United States)
2022
We provide insight into surface-catalyzed dehalogenative polymerization, analyzing the organometallic intermediate and its evolution planar polymeric structures. A combined study using scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS), low energy electron diffraction (LEED), near-edge absorption fine structure (NEXAFS) first-principles calculations unveils structural conformation of substrate-bound phenylene intermediates generated from 1,4-dibromobenzene precursors...
Positioning of absolute energy levels and the quantitative description occupied obtained for TiO<sub>2</sub> nanopowders, combining UPS UV-Vis spectroscopies.
We report the synthesis and first electronic characterization of an atomically thin two dimensional π-conjugated polymer. Polymerization via Ullmann coupling a tetrabrominated tetrathienoanthracene on Ag(111) in ultra-high vacuum (UHV) produces porous 2D polymer network that has been characterized by scanning tunnelling microscopy (STM). High-resolution X-ray photoelectron spectroscopy (HRXPS) shows reaction proceeds distinct steps: dehalogenation brominated precursor, which begins at room...
Two-dimensional molecular self-assembly at the liquid/solid interface is a widely employed approach in surface science to pattern surfaces nanometre scale. A multitude of supramolecular structures can be realized depending on parameters such as functionalization building blocks, temperature which takes place, type solvent and solute concentration. How these other influence kinetics thermodynamics process subject this review.
We report the synthesis of extended two-dimensional organic networks on Cu(111), Ag(111), Cu(110), and Ag(110) from thiophene-based molecules. A combination scanning tunnelling microscopy X-ray photoemission spectroscopy yields insight into reaction pathways single molecules towards formation organometallic polymeric structures via Ullmann dehalogenation C-C coupling. The thermal stability molecular is probed by annealing at elevated temperatures up to 500 °C. On Cu(111) only are formed,...
Abstract Pt‐based materials are widely used as heterogeneous catalysts, in particular for pollutant removal applications. The state of Pt has often been proposed to differ depending on experimental conditions, example, metallic poisoned with CO being present at lower temperature before light‐off, while an oxidized surface prevails above light‐off temperature. In stark contrast all previous reports, we show herein that both and similar proportions under reaction conditions the ca. 1 nm...
Abstract On-surface covalent self-assembly of organic molecules is a very promising bottom–up approach for producing atomically controlled nanostructures. Due to their highly tuneable properties, these structures may be used as building blocks in electronic carbon-based molecular devices. Following this idea, here we report on the structure an ordered array poly(para-phenylene) nanowires produced by surface-catalysed dehalogenative reaction. By scanning tunnelling spectroscopy follow...
Metal Organic Frameworks (MOFs) have been recently proposed as promising electrocatalysts, yet the exact nature of mechanisms in play has not addressed depth. By comparing electrocatalytic activity a MOF for oxygen reduction reaction (ORR) and corresponding molecular building units through electrochemical techniques, here, we investigate catalytic sites, their redox states electron transfer pathways.
come from teaching and research institutions in France or abroad, public private centers.L'archive ouverte pluridisciplinaire
Furfural is a pivotal renewable platform molecule obtained from the chemical breakdown of hemicellulose. While it has traditionally been valorized to value-added chemicals through catalytic hydrogenation in biorefineries, its direct electrocatalytic presents attractive advantages. This article describes significant improvements brought by structuring copper cathodes applied this process terms activity and selectivity. We show that structured electrodes are capable converting furfural...
We report a new method for the growth of reduced graphene oxide (rGO) on 316L alloy stainless steel (SS) and its relevance biomedical applications. demonstrate that electrochemical etching increases concentration metallic species surface enables rGO. This result is supported through combination Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), scanning electron (SEM), density functional theory (DFT) calculations static water contact angle...
Here we present a series of heterogeneous catalysts based on metal–organic frameworks and microporous polymers used as macroligands for heterogenized organometallic complexes. We show that both homogeneous follow the same linear correlation between electronic effect ligand, described by Hammett parameter, catalytic activity. This highlights crucial impact local environment surrounding active center over long-range framework structure porous support. The rational design can thus be guided...
Surface fluorination improves the photocatalytic activity of TiO2, and influences various features fluorinated TiO2 (TiO2–F) have often been discussed in literature. The present paper addresses changes induced by surface on morphological, structural, surface, electronic TiO2. In particular, X-ray diffraction, specific area analysis, transmission scanning electron microscopy give evidence that does not affect structural properties morphology nanoparticles. contrast, induces properties....
Molybdenum species highly dispersed on selected titania materials catalyse CO 2 hydrogenation to methanol.
Abstract Eumelanin is a ubiquitous pigment in the human body, animals, and plants, with potential for bioelectronic applications because of its unique set physical chemical properties, including strong UV‐vis absorption, mixed ionic/electronic conduction, free radical scavenging anti‐oxidant properties. Herein, detailed investigation reported eumelanin thin films grown on substrates patterned gold electrodes as model system device integration, using electrical measurements, atomic force...
Among patients receiving mechanical ventilation, tidal volumes with each breath are often constant or similar. This may lead to ventilator-induced lung injury by altering depleting surfactant. The role of sigh breaths in reducing among trauma at risk poor outcomes is unknown.
A novel and controlled methodology combining UPS/XPS spectroscopies intended to determine the electronic state at surface of ceria nanopowders.
Among the inorganic compounds, many oxides and sulfides are known to be semiconductors. At crossroads of these two families, oxysulfide MxOySz compounds were much less investigated because they scarce in nature complex synthesize. them, lanthanide Ln2O2S (Ln = lanthanide) indirect band gap semiconductors, with wide gaps, except for Ce2O2S. (Gd,Ce)2O2S anisotropic nanoparticles a hexagonal structure obtained over whole composition range exhibit colors varying from white brown increasing Ce...
Surfactant-free CuAgSe–TiO<sub>2</sub> composites show an improved photocatalysis as compared to Cu<sub>2−x</sub>Se–TiO<sub>2</sub> or TiO<sub>2</sub> alone.