Laboratoire de réactivité de surface

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  • Article dans une revue

Drastic Au(111) Surface Reconstruction upon Insulin Growth Factor Tripeptide Adsorption

Vincent Humblot, Anne Vallee, Ahmed Naitabdi, Frederik Tielens, Claire-Marie Pradier

Adsorption of biomolecules at metal surfaces often creates two-dimensional ordering of the adlayers. However, metal substrate reconstruction is less commonly observed, unless upon annealing of the molecule−surface system. Here, we report on the drastic room-temperature reconstruction of the Au(111…

Journal of the American Chemical Society, 2012, 134, pp.6579−6583. ⟨10.1021/ja302530q⟩. ⟨hal-00748253⟩

  • Article dans une revue

Impact of Collagen Crosslinking on Dislocated Human Shoulder Capsules—Effect on Structural and Mechanical Properties

Pauline Cornette, Ilhem Jaabar, Vincent Dupres, Jean-David Werthel, Francis Berenbaum, Xavier Houard, Jessem Landoulsi, Geoffroy Nourissat

Classical treatments of shoulder instability are associated with recurrence. To determine whether the modification of the capsule properties may be an alternative procedure, the effect of crosslinking treatment on the structure and mechanical properties of diseased human shoulder capsules was…

International Journal of Molecular Sciences, 2022, 23 (4), pp.2297. ⟨10.3390/ijms23042297⟩. ⟨hal-03617260⟩

  • Article dans une revue

Vanadium-Substituted Phosphomolybdic Acids for the Aerobic Cleavage of Lignin Models-Mechanistic Aspect and Extension to Lignin

Louay Al-Hussaini, Franck Launay, Elena Galvez

This work deals with the aerobic oxidative cleavage of CC and CO bonds catalyzed by the Keggin-type phosphovanadomolybdic acid (H 6 [PMo 9 V 3 O 40 ], noted H 6 PV 3). The latter was synthesized by an adapted hydrothermal procedure classically used for lower vanadium content and was tested as a…

Materials, 2020, 13 (4), pp.812. ⟨10.3390/ma13040812⟩. ⟨hal-02553354⟩

  • Article dans une revue

One-pot prepared mesoporous silica SBA-15-like monoliths with embedded Ni particles as selective and stable catalysts for methane dry reforming

Oscar Daoura, Giulia Fornasieri, Maya Boutros, Nissrine El Hassan, Patricia Beaunier, Cyril Thomas, Mohamed Selmane, Antoine Miche, Capucine Sassoye, Ovidiu Ersen, Walid Baaziz, Pascale Massiani, Anne Bleuzen, Franck Launay

Ni@SBA-15 monoliths with up to 5 wt.% of Ni were successfully synthetized by means of an original and easy one-pot sol-gel method. Transmission Electron Microscopy (TEM), X-ray Photoelectron Spectroscopy (XPS), Temperature-Programmed Reduction (TPR), Pair Distribution Function (PDF) and X-Ray…

Applied Catalysis B: Environmental, 2021, 280, pp.119417. ⟨10.1016/j.apcatb.2020.119417⟩. ⟨hal-02991760⟩

  • Article dans une revue

Tuning the load in gold and magnetic nanoparticles in nanogels through their design for enhanced dual magneto-photo-thermia

Esther Cazares-Cortes, Claire Wilhelm, Jose Efrain Perez, Ana Espinosa, Sandra Casale, Aude Michel, Ali Abou-Hassan, Christine Ménager

We describe a novel synthesis allowing to enhance the load in magnetic nanoparticles and gold nanorods in nanogels. Two different structures, simple cores and core-shells were synthesized and their heating properties upon alternating magnetic field or laser exposure are compared. Remarkably, the…

Chemical Communications, In press, ⟨10.1039/D0CC07176E⟩. ⟨hal-03236485⟩

  • Article dans une revue

Halide-free CO 2 cycloaddition onto styrene oxide catalysed by first row transition-metal derivatives of polyoxotungstates

Jingjing Ren, Franck Launay, Richard Villanneau, Anna Proust

Quaternary ammonium salts of metal derivatives of polyoxometalates [XW11O39M(H2O)]n- (X = P, Si; M = Cr, Mn, Co, Ni, Zn) were successfully tested instead of quaternary ammonium halides as catalysts in the cycloaddition of CO2 to styrene oxide. Remarkably, they gave very satisfactory yields of…

Chemical Communications, 2024, ⟨10.1039/D4CC00522H⟩. ⟨hal-04545491⟩

  • Article dans une revue

Laccase production from sucrose by recombinant Yarrowia lipolytica and its application to decolorization of environmental pollutant dyes

Farshad Darvishi, Marzieh Moradi, Claude Jolivalt, Catherine Madzak

Laccases are used in decolorization and biodegradation of synthetic dyes, bioremediation of industrial waste-waters and delignification of lignocellulosic compounds. The aims of the present study were the optimization of a recombinant laccase production in Yarrowia lipolytica yeast using sucrose as…

Ecotoxicology and Environmental Safety, 2018, 165, pp.278-283. ⟨10.1016/j.ecoenv.2018.09.026⟩. ⟨hal-02621256⟩

  • Article dans une revue

Light-induced infrared difference spectroscopy on three different forms of orange carotenoid protein: focus on carotenoid vibrations

Silvia Leccese, Adjélé Wilson, Diana Kirilovsky, Riccardo Spezia, Claude Jolivalt, Alberto Mezzetti

Orange carotenoid protein (OCP) is a photoactive carotenoprotein involved in photoprotection of cyanobacteria, which uses a keto-catorenoid as a chromophore. When it absorbs blue-green light, it converts from an inactive OCPO orange form to an activated OCPR red form, the latter being able to bind…

Photochemical & Photobiological Sciences , 2023, 22 (6), pp.1379-1391. ⟨10.1007/s43630-023-00384-7⟩. ⟨hal-04225642⟩

  • Article dans une revue

Nanosized Layered TOT Magnesium-Silicates: Equilibrium Morphologies and Surface Speciation, a Computational and Experimental Study

Hervé Toulhoat, Longfei Lin, Dalil Brouri, Jean-Marc Krafft, Yannick Millot, Guillaume Laugel, Hélène Lauron-Pernot

The morphology, surface speciation, NMR, and IR spectroscopic properties of nanosized layered magnesium silicate isostructural to talc at equilibrium in an aqueous environment were computed from first principles. The theoretical predictions were successfully compared with experimental results…

Journal of Physical Chemistry C, 2019, 123 (44), pp.26965-26979. ⟨10.1021/acs.jpcc.9b06794⟩. ⟨hal-02457716⟩

  • Article dans une revue

Effect of Ca-doping on microstructure and photocatalytic activity of ZnO nanoparticles synthesized by sol gel method

R. Slama, J. El Ghoul, K. Omri, A. Houas, L. El Mir, Franck Launay

We report the synthesis of Zn1−xCaxO nanoparticles prepared by a sol–gel processing technique for x ranging from 0 to 0.05. The structural, morphological and optical properties of the nanoparticles were investigated by X-ray diffraction, transition electron microscopy, UV measurements, and…

Journal of Materials Science: Materials in Electronics, 2016, 27 (8), pp.7939 - 7946. ⟨10.1007/s10854-016-4786-9⟩. ⟨hal-01548339⟩