Laboratoire de réactivité de surface

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  • Article dans une revue

Heteropolytungstate-decorated core-shell magnetic nanoparticles: A covalent strategy for polyoxometalate-based hybrid nanomaterials

Ourania Makrygenni, Emilie Secret, Aude Michel, Dalil Brouri, Vincent Dupuis, Anna Proust, Jean-Michel Siaugue, Richard Villanneau

Amino-functionalized core-shell magnetic nanoparticles have been covalently grafted with Polyoxometalates (POMs). These multifunctional nanocomposites have been obtained through the coupling of heteropolytungstate-based hybrids bearing carboxylic acid functions with aminopropyl functions that…

Journal of Colloid and Interface Science, 2018, 514, pp.49-58. ⟨10.1016/j.jcis.2017.12.019⟩. ⟨hal-03511208v2⟩

  • Article dans une revue

In Situ Cobalt Speciation on γ-Al 2 O 3 in the Presence of Carboxylate Ligands in Supported Catalyst Preparation

A. Davantès, C. Schlaup, X. Carrier, Mickael Rivallan, G. Lefèvre

Molecular-scale understanding of metal impregnation on a porous oxide support is a key step toward the development of optimized (and cost ,effective) catalytic materials with enhanced activity, selectivity and time on stream stability. In the present contribution in situ ATR-IR and ex situ…

Journal of Physical Chemistry C, 2017, 121 (39), pp.21461 - 21471. ⟨10.1021/acs.jpcc.7b06559⟩. ⟨hal-01651978⟩

  • Article dans une revue

Hierarchical Self-Assembly of Polyoxometalate-Based Hybrids Driven by Metal Coordination and Electrostatic Interactions: From Discrete Supramolecular Species to Dense Monodisperse Nanoparticles

Guillaume Izzet, Benjamin Abécassis, Dalil Brouri, Madeleine Piot, Benjamin Matt, Stefano Artin Serapian, Carles Bo, Anna Proust

The metal-driven self-assembly processes of a covalent polyoxometalate (POM)-based hybrid bearing remote terpyridine binding sites have been investigated. In a strongly dissociating solvent, a discrete metallomacrocycle, described as a molecular triangle, is formed and characterized by 2D diffusion…

Journal of the American Chemical Society, 2016, 138 (15), pp.5093 - 5099. ⟨10.1021/jacs.6b00972⟩. ⟨hal-01548125⟩

  • Article dans une revue

Microporous polyacrylate matrix containing hydrogen bonded nanotubular assemblies

Farid Ouhib, Emmanuelle Bugnet, Andrei Nossov, Jean-Luc Bonardet, Laurent Bouteiller

We report the straightforward photo-polymn. of polyacrylate films contg. bis-urea based self-assembled nanotubes. The obtained materials are characterized by gas adsorption measurements, 129Xe NMR spectroscopy and WAXS. The presence of the bis-ureas is shown by butane adsorption (at 273 K and…

Polymer, 2010, 51 (15), pp.3360-3364. ⟨10.1016/j.polymer.2010.05.047⟩. ⟨hal-00604788⟩

  • Communication dans un congrès

Structural and electrochemical properties of Y(Ni,Mn)3 compounds in protic ionic liquid

J Monnier, G Fedlouk, J Chan, E Kurchavova, M Turmine, V Vivier, L. Laversenne, M Mateos, F Cuevas, J Zhang

The achievable voltage of an alkaline battery is limited by the narrow electrochemical stability window of water and its service life is constrained by corrosion issues related to highly concentrated alkaline solutions. An alternative to aqueous media is the use of ionic liquid (IL)-based…

MH2024, May 2024, Saint-Malo, France. ⟨hal-04959488⟩

  • Article dans une revue

Catalytic behavior of nickel loaded on acid-activated and pillared clay in total gas-phase oxidation of ethanol

Nadjat Lahoues-Chakour, Siham Barama, Akila Barama, Brahim Djellouli, Cyril Domingos, Anne Davidson

Layered and acid-activated clays, used as catalytic support, were synthesized from natural Algerian montmorillonite. All supports were prepared by (1) pillaring with aquo/hydroxo/oxo Al clusters, in particular Al13 that contains only octahedral Al-species, (2) an acidic H2SO4 treatment, and (3)…

Journal of Nanoparticle Research, 2018, 20 (11), pp.294. ⟨10.1007/s11051-018-4385-1⟩. ⟨hal-02022621⟩

  • Article dans une revue

Surface Science Approach to the Solid-Liquid Interface: Surface-Dependent Precipitation of Ni(OH)2 on a-Al2O3 Surfaces

Asma Tougerti, Isabelle Llorens, Francesco d'Acapito, Emiliano Fonda, Jean-Louis Hazemann, Yves Joly, Dominique Thiaudi Ère, Michel Che, Xavier Carrier

A molecular-scale understanding of the adsorption of metal ions on oxide surfaces is of fundamental importance for various scientific areas where the oxide/water interface plays a central role, such as corrosion science, preparation of heterogeneous catalysts, transport of contaminants in the…

Angewandte Chemie International Edition, 2012, 51, pp.7697-7701. ⟨10.1002/anie.201201349⟩. ⟨hal-00749941⟩

  • Article dans une revue

EPR Characterization and Reactivity of Surface-Localized Inorganic Radicals and Radical Ions

Mario Chiesa, Elio Giamello, Michel Che

A review. The role of surface inorg. radicals and radical ions formed at the interface between a solid and a gas phase was discussed. The formation of such species is relevant to field such as electrochem., heterogeneous catalysts, photocatalysis and corrosion. The characterization of these…

Chemical Reviews, 2010, 110 (3), pp.1320-1347. ⟨10.1021/cr800366v⟩. ⟨hal-00604710⟩

  • Article dans une revue

Successive Strong Electrostatic Adsorptions of [RhCl6]3– on Tungstated-Ceria as an Original Approach to Preserve Rh Clusters From Sintering Under High-Temperature Reduction

Jeffrey Miller, Neil Schweitzer, Mimoun Aouine, Philippe Vernoux, Abdelmalik Boufar, Juliette Blanchard, Jean-Marc Krafft, Christophe Méthivier, Céline Sayag, Frédéric Ser, Mickaël Sicard, Cyril Thomas

Supported transition metal materials have been identified as ideal candidates for decades to catalyze various reactions of interest in the fields of hydrocarbon refining, energy and environmental catalysis. As the resources in transition metals on earth are known to be limited, it appears to be of…

Journal of Physical Chemistry C, 2021, 125 (45), pp.25094-25111. ⟨10.1021/acs.jpcc.1c07644⟩. ⟨hal-03449235⟩

  • Article dans une revue

Selective Oxidation of Methane to Formaldehyde Catalyzed by Phosphates: Kinetic Description by Bond Strengths and Specific Total Acidities

Vasilij Gomonaj, Hervé Toulhoat

A kinetic model predicts the experimental activity and selectivity patterns obtained in oxidation of methane for divided unsupported orthophosphates (M II 3(PO4)2, M III PO4,) and pyrophosphates (M II 2P2O7, M IV P2O7) catalysts spanning extended ranges of M-O bond strength (calculated from first…

ACS Catalysis, 2018, 8 (9), pp.8263-8272. ⟨10.1021/acscatal.8b02629⟩. ⟨hal-01955648⟩