Laboratoire de réactivité de surface

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  • Article dans une revue

Identification of Surface Basic Sites and Acid–Base Pairs of Hydroxyapatite

Sarah Diallo-Garcia, Manel Ben Osman, Jean-Marc Krafft, Sandra Casale, Cyril Thomas, Jun Kubo, Guylène Costentin

The Lewis and Brønsted basic properties of a stoichiometric hydroxyapatite (HAp) were investigated by infrared spectroscopy following the adsorption and desorption processes of a Lewis acidic molecule, CO2, and a Brønsted acidic molecule, C2H2. CO2 interacts with basic OH– and O2– of PO43– groups…

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 2014, 118 (24), pp.12744-12757. ⟨10.1021/jp500469x⟩. ⟨hal-01120667⟩

  • Article dans une revue

On the detrimental effect of tungstates on the n-C10-SCR of NOx on Ag/g-Al2O3

Juliette Blanchard, Rachel P. Doherty, Hiu Ying Law, Christophe Méthivier, Cyril Thomas

The influence of the addition of W to Al2O3, promoted or not by Ag, on the n-C10 SCR of NOx was investigated. It was shown that the addition of W was detrimental to the n-C10 SCR reaction. Based on the NOx- TPD, the XPS and the n-C10 SCR measurements, it was concluded that the loss of activity…

Top. Catal., 2013, Springer Science+Business Media New York 2013, pp.134-139. ⟨10.1007/s11244-013-9942-3⟩. ⟨hal-01121204⟩

  • Article dans une revue

Elucidation of the low coverage chiral adsorption assembly of L-lysine on Cu(110) surface: A theoretical study

Frederik Tielens, Vincent Humblot, Claire-Marie Pradier

The adsorption of L-lysine on Cu(110) surface was studied using periodic DFT. The geometry is discussed in terms of the molecular electrostatic interactions, and electronic properties such as DOS. An STM image was simulated and compared with our recently obtained experimental results. Compelling…

Surface Science : A Journal Devoted to the Physics and Chemistry of Interfaces, 2008, 602 (5), pp.1032-1039. ⟨10.1016/j.susc.2007.12.033⟩. ⟨hal-01361368⟩

  • Article dans une revue

Theoretical investigation of the inversion parameter in Co-3 (-) sAlsO4 (s=0-3) spinel structures

Frederik Tielens, M. Calatayud, R. Franco, J. M. Recio, J. Perez-Ramirez, C. Minot

The structural, energetic, and thermodynamic properties of the Co-3 (-) sAlsO4 (s = 0, 1, 2, and 3) crystal family are studied using periodic DFT calculations. We provide a quantitative discussion of the cation distribution effect on the cell parameter, the oxygen Wyckoff position, the interatomic…

Solid State Ionics, 2009, 180 (14-16), pp.1011-1016. ⟨10.1016/j.ssi.2009.03.023⟩. ⟨hal-01361360⟩

  • Article dans une revue

New route toward nanosized crystalline metal borides with tuneable stoichiometry and variable morphologies

Guillaume Gouget, Patricia Beaunier, David Portehault, Clément Sanchez

Herein we highlight for the first time the ability to tune the stoichiometry of metal boride nanocrystals through nanoparticle synthesis in thermally stable inorganic molten salts. Two metal-boron systems are chosen as case studies: boron-poor nickel borides and boron-rich yttrium borides. We show…

Faraday Discussions, 2016, 191, pp.511 - 525. ⟨10.1039/C6FD00053C⟩. ⟨hal-01440776⟩

  • Article dans une revue

Mn-analcime: Synthesis, characterization and application to cyclohexene oxidation

Amal Bejar, Semy Ben Chaabene, Maguy Jaber, Jean-François Lambert, Latifa Bergaoui

The hydrothermal synthesis of Mn-analcime was performed by mixing manganese(II) carbonate, silicic acid and aluminum nitrate in a basic medium in the 120–175 °C temperature range for 6–72 h. Different Mn/Al ratios were used. The obtained samples were characterized by powder XRD, N2 physical…

Microporous and Mesoporous Materials, 2014, 196, pp.158-164. ⟨10.1016/j.micromeso.2014.05.004⟩. ⟨hal-01121654⟩

  • Article dans une revue

Molybdenum oxide model catalysts and vanadium phosphates as actual catalysts for understanding heterogeneous catalytic partial oxidation reactions: A contribution by Jean-Claude Volta

Jacques C. Védrine, Graham J. Hutchings, Christopher J. Kiely

This review summarises and expands part of the work that Jean Claude Volta carried out during his scientific career at the Institut de Recherches sur la Catalyse (IRC), CNRS, University of Lyon in France. The first part deals with the structure sensitivity of molybdenum oxide (MoO3) for oxidation…

Catalysis Today, 2013, 217, pp.57-64. ⟨10.1016/j.cattod.2013.01.004⟩. ⟨hal-01121661⟩

  • Article dans une revue

Enzymatic Approach in Calcium Phosphate Biomineralization: A Contribution to Reconcile the Physicochemical with the Physiological View

Clément Guibert, Jessem Landoulsi

Biomineralization is the process by which organisms produce hard inorganic matter from soft tissues with outstanding control of mineral deposition in time and space. For this purpose, organisms deploy a sophisticated “toolkit” that has resulted in significant evolutionary innovations, for which…

International Journal of Molecular Sciences, 2021, 22 (23), pp.12957. ⟨10.3390/ijms222312957⟩. ⟨hal-03479544⟩

  • Article dans une revue

Redox-Triggered Control of Cell Adhesion and Deadhesion on Poly(lysine)- g -poly(ethylene oxide) Adlayers

Louise Hespel, Julien Dupré de Baubigny, Pierre Lalanne, Simon de Beco, Mathieu Coppey, Catherine Villard, Vincent Humblot, Emmanuelle Marie, Christophe Tribet

Spontaneous adsorption of poly(lysine)-g-poly(ethyleneglycol) comb-like copolymers (PLL-g-PEG) is a versatile mean to coat substrates with polymer layers that resist cell adhesion. We prepared redox cleavable PLL-g-PEG to switch adhesion on demand. Redox sensitivity was obtained by introducing…

ACS Applied Bio Materials, 2019, 2 (10), pp.4367-4376. ⟨10.1021/acsabm.9b00601⟩. ⟨hal-02301433⟩

  • Article dans une revue

Surface Chirality of Gly-Pro Dipeptide Adsorbed on a Cu(110) Surface

Hervé Cruguel, Christophe Méthivier, Claire-Marie Pradier, Vincent Humblot

The adsorption of chiral Gly-Pro dipeptide on Cu(110) has been characterized by combining in situ polarization modulation infrared reflection absorption spectroscopy (PM-RAIRS) and X-ray photoelectron spectroscopy (XPS). The chemical state of the dipeptide, and its anchoring points and adsorption…

Chirality, 2015, 27 (7), pp.411-416. ⟨10.1002/chir.22445⟩. ⟨hal-01238940⟩