Laboratoire de réactivité de surface

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  • Thèse

Préparation de nanoparticules de rhodium(0) sur support mésoporeux assistée par des sels d'ammonium quaternaires : Application à la catalyse d'hydrogénation asymétrique d'arènes prochiraux, Preparation of rhodium (0) nanoparticles on mesoporus support assisted by quaternary ammonium salts : application to asymmetric hydrogenation of prochiral arenes

Rita Sassine

Ces travaux de thèse visent à développer de nouveaux catalyseurs associant les activités prometteuses des nanoparticules de Rh(0) et l'effet de confinement des supports mésoporeux pour des applications en hydrogénation asymétrique dans l'eau. Des particules ont été préparées par réaction…, This thesis aims to develop new catalysts combining Rh(0) nanoparticles with promising activities and the confinement effect of mesoporous materials for applications in asymmetric hydrogenation in water. Particles were prepared by the reaction of NaBH4 with RhCl3, directly, within silicic (SBA-15)…

Génie des procédés. Université Pierre et Marie Curie - Paris VI, 2012. Français. ⟨NNT : 2012PA066053⟩. ⟨tel-00834363⟩

  • Thèse

Defects in ZnO nanoparticles obtained by gas-phase syntheses, Défauts dans les nanoparticules de ZnO obtenues par synthèses en phase gazeuse

Miao Zhang

By far, the assignment of defects-related spectroscopic features of zinc oxide is still a matter of great controversy. This is probably due to the variety of possible defects in ZnO as well as to their still uncertain formation energies and positions within the band gap. Uncontrolled measurement…, L’attribution des signatures spectrales liées aux défauts dans l’oxyde de zinc fait encore l’objet de controverses. Ceci est probablement dû à la grande variété de défauts possibles, à l’incertitude de leur niveau d’énergie ainsi que leur énergie de formation dans la bande interdite. De plus, l’…

Chemical Sciences. Sorbone Université; ED, 2017. English. ⟨NNT : ⟩. ⟨tel-03952778⟩

  • Article dans une revue

Promoting Ag/Al2O3 Performance in Low-Temperature H2-C3H6-SCR by Thermal Pretreatment of γ-Alumina in Water

Tesnim Chaieb, Laurent Delannoy, Catherine Louis, Cyril Thomas

The present work highlights for the first time that a thermal treatment of γ-Al2O3 in water at 80 °C for 24 h prior to Ag deposition (Ag/Al2O3-OH) leads to a drastic enhancement of H2-C3H6-SCR performance at low temperature. This enhancement is attributed to the higher NOx coverage on Ag/Al2O3-OH…

Catalysis Letters, 2016, pp.1-8. ⟨10.1007/s10562-016-1864-9⟩. ⟨hal-01390045⟩

  • Article dans une revue

Acidic Properties of Alkaline-Earth Phosphates Determined by an Experimental-Theoretical Approach

E. Blanco, Q. Gu, J. Couble, L. Martin, T. Onfroy, G. Costentin, Jean-Francois Paul, Carine Michel, S. Loridant

Alkaline-earth phosphates efficient in the dehydration of lactic acid to acrylic acid were previously shown to contain a surface mono/dihydrogen phosphate amorphous layer composed of M2+ cations and both P═O and POH groups. In this work, acidic properties of such a layer were determined combining…

Journal of Physical Chemistry C, 2020, 124 (3), pp.2013-2023. ⟨10.1021/acs.jpcc.9b10472⟩. ⟨hal-02472130⟩

  • Article dans une revue

Phosphoribosyl Pyrophosphate: A Molecular Vestige of the Origin of Life on Minerals

Mariame Akouche, Maguy Jaber, Marie-Christine Maurel, Jean-François Lambert, Thomas Georgelin

In this contribution, we report the formation under prebiotic conditions of phosphoribosyl pyrophosphate (PRPP) as a molecular precursor in the one-pot synthesis of a canonical nucleotide, namely adenosine monophosphate (AMP) from its building blocks (KH2PO4 or Pi, adenine, and d-ribose), on a…

Angewandte Chemie International Edition, 2017, 56 (27), pp.7920 - 7923. ⟨10.1002/anie.201702633⟩. ⟨hal-01652008⟩

  • Article dans une revue

Author Correction: Proton irradiation: a key to the challenge of N-glycosidic bond formation in a prebiotic context

Raffaele Saladino, Bruno Bizzarri, Lorenzo Botta, Jiří Šponer, Judit Šponer, Thomas Georgelin, Maguy Jaber, Baptiste Rigaud, Mikhail Kapralov, Gennady Timoshenko, Alexei Rozanov, Eugene Krasavin, Anna Maria Timperio, Ernesto Di Mauro

The original version of this Article contained a typographical error in the spelling of the author Mikhail Kapralov, which was incorrectly given as Michail Kapralov. This has now been corrected in the PDF and HTML versions of the Article and in the accompanying Supplementary Information.

Scientific Reports, 2019, 9 (1), pp.4649. ⟨10.1038/s41598-019-40290-6⟩. ⟨hal-02543419⟩

  • Article dans une revue

Molecular Understanding of the Bulk Composition of Crystalline Nonstoichiometric Hydroxyapatites: Application to the Rationalization of Structure-Reactivity Relationships

Manel Ben Osman, Jean Marc Krafft, Yannick Millot, Frederic Averseng, Tetsuya Yoshioka, Jun Kubo, Guylène Costentin

Crystalline hydroxyapatite samples (HAps) have been prepared by using the co-precipitation method under various pH conditions, leading to nonstoichiometric solids (1.65 < Ca/P < 1.77). The aim of this study was to rationalize the sensitivity of the catalytic activity of HAps to their bulk…

European Journal of Inorganic Chemistry, 2016, 2016 (17), pp.2709 - 2720. ⟨10.1002/ejic.201600244⟩. ⟨hal-01378491⟩

  • Article dans une revue

Adsorption of l-DOPA Intercalated in Hydrated Na-Saponite Clay: A Combined Experimental and Theoretical Study

K. El Adraa, V. Timon, J.-F. Lambert, Abdel-Rahman Al-Rabaa, F. Jaber, M. Jaber, Frederik Tielens

The intercalation of L-DOPA into the interlayer space of saponite, a 2:1 phyllosilicate, and the nature of host−guest interactions are investigated by a combined experimental and theoretical approach. L-DOPA zwitterions are accommodated vertically in the interlayer region as a bilayer of partially…

Journal of Physical Chemistry C, 2012, 116, pp.26414−26421. ⟨10.1021/jp3094148⟩. ⟨hal-00808607⟩

  • Article dans une revue

Importance of the Nature of the Active Acid/Base Pairs of Hydroxyapatite Involved in the Catalytic Transformation of Ethanol to n ‐Butanol Revealed by Operando DRIFTS

Manel Ben Osman, Jean‐marc Krafft, Cyril Thomas, Tetsuya Yoshioka, Jun Kubo, Guylène Costentin

Operando DRIFTS is used to identify the nature and the role of the surface sites of hydroxyapatites (HAps) involved in the catalytic transformation of ethanol to n‐butanol. The surface processes occurring upon a first reaction step followed by a step under He flow greatly influence the reactivity…

ChemCatChem, 2019, 11 (6), pp.1765-1778. ⟨10.1002/cctc.201801880⟩. ⟨hal-02168502⟩

  • Article dans une revue

Chemical Modifications of Au/SiO2 Template Substrates for Patterned Biofunctional Surfaces

Elisabeth Briand, Vincent Humblot, Jessem Landoulsi, Sarunas Petronis, Claire-Marie Pradier, Bengt Kasemo, Sofia Svedhem

The aim of this work was to create patterned surfaces for localized and specific biochemical recognition. For this purpose, we have developed a protocol for orthogonal and material-selective surface modifications of microfabricated patterned surfaces composed of SiO2 areas (100 mu m diameter)…

Langmuir, 2011, 27 (2), pp.678-685. ⟨10.1021/la101858y⟩. ⟨hal-00602936⟩