Laboratoire de réactivité de surface

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  • 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

Chemical Differentiation of Planets: A Core Issue

Hervé Toulhoat, Viacheslav Zgonnik

By plotting empirical chemical element abundances on Earth relative to the Sun and normalized to silicon versus their first ionization potentials, we confirm the existence of a correlation reported earlier. To explain this, we develop a model based on principles of statistical physics that predicts…

The Astrophysical Journal, 2022, 924 (2), pp.83. ⟨10.3847/1538-4357/ac300b⟩. ⟨hal-03536637⟩

  • Article dans une revue

The state of BEA zeolite supported nickel catalysts in CO2 methanation reaction

Wojciech Gac, Witold Zawadzki, Grzegorz Słowik, Marcin Kuśmierz, Stanislaw Dzwigaj

Two model nickel catalysts for CO2 methanation reaction were prepared by the impregnation method using unmodified and dealuminated BEA-type zeolite supports, denoted NiHAlBEA and NiSiBEA. Transmission electron microscopy (TEM) and X-ray diffraction studies evidenced formation of metallic nickel…

Applied Surface Science, 2021, 564, pp.150421. ⟨10.1016/j.apsusc.2021.150421⟩. ⟨hal-03360250⟩

  • Article dans une revue

Metal Oxides in Heterogeneous Oxidation Catalysis: State of the Art and Challenges for a More Sustainable World

Jacques C. Védrine

This Review presents current knowledge, recent results, and challenges for the future in heterogeneous oxidation catalysis in liquid and gaseous phases on solid metal oxide catalysts. Metal oxides that are used as catalysts and their main structures and properties are summarized, as well as their…

ChemSusChem, 2019, 50 years of the Jerzy Haber Institute, 12 (3), pp.577-588. ⟨10.1002/cssc.201802248⟩. ⟨hal-02181788⟩

  • Article dans une revue

Effects of dealumination on the performance of Ni-containing BEA catalysts in bioethanol steam reforming

Wojciech Gac, Magdalena Greluk, Grzegorz Słowik, Yannick Millot, Laetitia Valentin, Stanislaw Dzwigaj

The effects of dealumination of BEA zeolite on the formation of nickel active sites and the performance of Ni-containing BEA zeolite catalysts in the steam reforming of ethanol have been studied. Ni-containing BEA zeolite catalysts were prepared by the impregnation of unmodified and dealuminated…

Applied Catalysis B: Environmental, 2018, 237, pp.94-109. ⟨10.1016/j.apcatb.2018.05.040⟩. ⟨hal-01909340⟩

  • 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

Design of model tokamak particles for future toxicity studies: Morphology and physical characterization

E. Bernard, F. Jambon, I. Georges, M. Sanles Sobrido, Jérôme Rose, N. Herlin-Boime, F. Miserque, P. Beaunier, D. Vrel, S. Dine, E. Hodille, J. Chêne, S. Garcia-Argote, G. Pieters, S. Peillon, F. Gensdarmes, G. Dinescu, T. Acsente, Chiara Uboldi, Thierry Orsière, Veronique Malard, B. Rousseau, G. Dine, Ph. Delaporte, C Grisolia

During ITER operation, it is expected that the large panel of plasma-wall interactions triggers the production of dust particles from the tungsten and beryllium first wall. These particles can be loaded with tritium (T) used as a fuel for the fusion reaction; T inventory is of prime importance for…

Fusion Engineering and Design, 2019, 145, pp.60-65. ⟨10.1016/j.fusengdes.2019.05.037⟩. ⟨hal-02169319⟩

  • 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⟩