Laboratoire de réactivité de surface

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  • Article dans une revue

Influence of synthesis parameters of mesocellular silica foams doped by nickel on methane reforming by CO 2

M. Boutros, O. Daoura, Franck Launay, P. Massiani, N. El Hassan

New catalysts based on Ni(0) dispersed onto mesocellular silica foams (MCF) were prepared for Dry Reforming of Methane (DRM). Different synthesis methods of MCF supports (with and without using NH4F or n-butanol) were tested in order to study the influence of the textural properties of the support…

MATEC Web of Conferences, 2018, 171, pp.03002. ⟨10.1051/matecconf/201817103002⟩. ⟨hal-02925312⟩

  • Article dans une revue

Effect of Fe on the activity of Au/FeO x -TiO2 catalysts for CO oxidation

Mpfunzeni Raphulu, Thabang Ntho, Pumeza Gqogqa, John Moma, Lebohang Mokoena, Gary Pattrick, Mike Scurrell, Laurent Delannoy, Catherine Louis

A thorough characterisation of Au/TiO2 and Au/ FeOx-TiO2 catalysts was conducted in order to get a better understanding of the effect of Fe on the Au/TiO2 catalysts and link it to differences observed in their activities for CO oxidation. Several techniques including HRTEM, temperature-programmed…

Gold Bulletin : The journal of gold science, technology and applications , 2016, 49 (1-2), pp.9-20. ⟨10.1007/s13404-016-0178-4⟩. ⟨hal-01548378⟩

  • Article dans une revue

Scanning Electrochemical Microscopy for Investigating Gas Bubble/Liquid Interfaces

Claude Gabrielli, François Huet, Michel Keddam, Philippe Rousseau, Vincent Vivier

Scanning electrochemical microscopy was used to characterize air bubble/electrolyte interfaces for bubbles of diameter in the millimeter range. Contrary to rigid insulated substrate/liquid interfaces, the approach of the tip of the microelectrode was shown to lead to a deformation of the bubble…

Electrochemical and Solid-State Letters, 2003, 6 (10), pp.E23. ⟨10.1149/1.1604971⟩. ⟨hal-04219330⟩

  • Article dans une revue

Elaboration of antibiofilm surfaces functionalized with antifungal-cyclodextrin inclusion complexes.

Aïcha Gharbi, Vincent Humblot, Turpin Frédéric, Claire-Marie Pradier, Christine Imbert, Jean-Marc Berjeaud

To tackle the loss of activity of surfaces functionalized by coating and covalently bound molecules to materials, an intermediate system implying the noncovalent immobilization of active molecules in the inner cavity of grafted cyclodextrins (CDs) was investigated. The antifungal and antibiofilm…

FEMS Immunology and Medical Microbiology, 2012, pp.257-269. ⟨10.1111/j.1574-695X.2012.00932.x⟩. ⟨hal-00707695⟩

  • Article dans une revue

Ultrafast time-resolved quantum cascade laser diagnostic for enlightening the role of surface formate species in the photocatalytic oxidation of methanol

Josefine Schnee, Marco Daturi, Mohamad El-Roz

In the present work, a new quantum cascade laser (QCL)-assisted operando FT-IR setup was used to get direct insight into the relationship between the overall catalytic performance of TiO2 photocatalysts in the gas phase photooxidation of methanol at 25 °C, and the kinetics of intermediate surface…

Catalysis Science & Technology, 2020, 10 (16), pp.5618-5627. ⟨10.1039/D0CY00865F⟩. ⟨hal-03013711⟩

  • Article dans une revue

On the relationship between the basicity of a surface and its ability to catalyze transesterification in liquid and gas phases: the case of MgO

Damien Cornu, Hazar Guesmi, Guillaume Laugel, Jean-Marc Krafft, Hélène Lauron-Pernot

Gas or liquid phase transesterification reactions are used in the field of biomass valorization to transform some platform molecules into valuable products. Basic heterogeneous catalysts are often claimed for these applications but the role of basicity in the reaction mechanism depending on the…

Physical Chemistry Chemical Physics, 2015, 17, pp.14168-14176 ⟨10.1039/C5CP00217F⟩. ⟨hal-01153367⟩

  • Article dans une revue

Static and dynamic electronic characterization of organic monolayers grafted on a silicon surface

Olivier Pluchery, Y. Zhang, R. Benbalagh, L. Caillard, J. J. Gallet, F. Bournel, A.-F. Lamic-Humblot, M. Salmeron, Y. J. Chabal, F. Rochet

Organic layers chemically grafted on silicon offer excellent interfaces that may open up the way for new organic–inorganic hybrid nanoelectronic devices. However, technological achievements rely on the precise electronic characterization of such organic layers. We have prepared ordered grafted…

Physical Chemistry Chemical Physics, 2016, 18 (5), pp.3675-3684. ⟨10.1039/C5CP05943G⟩. ⟨hal-01262800⟩

  • Article dans une revue

Critical assessment of solvent effects on absorption and fluorescence of 3HF in acetonitrile in the QM/PCM framework: A synergic computational and experimental study

Daniele Loco, Stefano Protti, Benedetta Mennucci, Alberto Mezzetti

Absorption and fluorescence properties of 3-hydroxyflavone (3HF) dissolved in the polar aprotic solvent acetonitrile have been investigated by electronic spectroscopies, associated to mixed quantum mechanical (QM)/classical calculations, where the effect of the solvent is included at the classical…

Journal of Molecular Structure, 2019, 1182, pp.283-291. ⟨10.1016/j.molstruc.2018.12.085⟩. ⟨hal-02178337⟩

  • Article dans une revue

Cation Migration and Structural Deformations upon Dehydration of Nickel-Exchanged NaY Zeolite: A Combined Neutron Diffraction and Monte Carlo Study

Wilfried Louisfrema, Jean-Louis Paillaud, Florence Porcher, Elsa Perrin, Thomas Onfroy, Pascale Massiani, Anne Boutin, Benjamin Rotenberg

Combining neutron diffraction and classical molecular simulations, we describe the cation migration and associated structural changes taking place in a Ni-exchanged NaY faujasite zeolite upon stepwise dehydration from room temperature up to 400 °C. The cation redistribution between sites and the…

Journal of Physical Chemistry C, 2016, 120 (32), pp.18115-18125. ⟨10.1021/acs.jpcc.6b05657⟩. ⟨hal-01485629⟩

  • Article dans une revue

Co-grafting of antiadhesive and antimicrobial agents onto UV-micropatterned copper surfaces

Jessie Peyre, Vincent Humblot, Christophe Méthivier, Jean-Marc Berjeaud, Claire-Marie Pradier

Adhesion of proteins and bacteria was reduced by a factor close to one order of magnitude, and adhered bacteria were dramatically damaged on copper surfaces by grafting a PEG-modified PMMA-based (polymethyl methacrylate) copolymer together with an antimicrobial peptide. To obtain PEG and a peptide…

Colloids and Surfaces B: Biointerfaces, 2015, 136, pp.1120 - 1130. ⟨10.1016/j.colsurfb.2015.11.025⟩. ⟨hal-01564034⟩