Laboratoire de réactivité de surface

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  • Article dans une revue

A comparative study of the catalysis of peptide bonds formation by oxide surfaces

Jean-Francois Lambert, Maguy Jaber, Thomas Georgelin, Lorenzo Stievano

It is well-known that amino acids deposited on some inorganic oxides undergo peptidic condensation. It is seldom realised however that a large diversity of behaviours can be observed in such systems. Here we use the apparently simple case of glycine-non-porous silica as a reference system, in which…

Physical Chemistry Chemical Physics, 2013, 15 (32), pp.13371-13380. ⟨10.1039/C3CP51282G⟩. ⟨hal-00924129⟩

  • Poster de conférence

Chemical evolution of organic molecules under Mars-like UV radiation conditions simulated in the laboratory with the MOMIE setup

O. Poch, Patrice Coll, Cyril Szopa, F. Stalport, T. Georgelin, M. Jaber, J.F. Lambert

The search for organic carbon at the surface of Mars, as clues of past habitability or remnants of life, is a major science goal of Mars' exploration. Understanding the chemical evolution of organic molecules under current Martian environmental conditions is essential to support the past,…

Eighth International Conference on Mars, Jul 2014, Pasadena, United States. pp.abstract 1228, 2014. ⟨hal-01139973⟩

  • Article dans une revue

Temporin-SHa peptides grafted on gold surfaces display antibacterial activity

Andres Lombana, Zahid Raja, Sandra Casale, Claire-Marie Pradier, Thierry Foulon, Ali Ladram, Vincent Humblot

Development of resistant bacteria onto biomaterials is a major problem leading to nosocomial infections. Antimicrobial peptides are good candidates for the generation of antimicrobial surfaces because of their broad-spectrum activity and their original mechanism of action (i.e. rapid lysis of the…

Journal of Peptide Science, 2014, 20, pp.563-569. ⟨10.1002/psc.2654⟩. ⟨hal-01044512⟩

  • Article dans une revue

On an additional promoting role of hydrogen in the H2-assistedC3H6-SCR of NOxon Ag/Al2O3: A lowering of the temperature offormation-decomposition of the organo-NOxintermediates?

Cyril Thomas

tThe addition of minute amounts of H2to the selective catalytic reduction of nitrogen oxides (NOx)by hydrocarbons (HC-SCR) has been shown to promote the reduction of NOxat remarkably lowerreaction temperatures on Ag/Al2O3catalysts. Despite extensive investigations, the origin of this remark-able…

Applied Catalysis B: Environmental, 2014, 162, pp.454-462. ⟨10.1016/j.apcatb.2014.07.021⟩. ⟨hal-01064983⟩

  • Article dans une revue

ZSM-5/SBA-15 microporous/mesoporous composites prepared by a microwave-assisted zeolitisation of Al-SBA-15 mesoporous solids

Sami Habib, Franck Launay, Henri El Zakhem, Matjaž Mazaj, Flavien Guenneau, Patricia Beaunier, Dalil Brouri, Nataša Novak Tušar, Venčeslav Kaučič, Antoine Gedeon

ZSM-5/SBA-15 composites with high textural properties were synthesised by a microwave-assisted zeolitisation of Al-SBA-15 in the presence of tetrapropylammonium bromide. The effect of the hydrothermal treatment temperature and of ammonium fluoride, often used as a catalyst, was studied. Resulting…

Materials Research Bulletin, 2013, 48, pp.1288-1295. ⟨10.1016/j.materresbull.2012.12.030⟩. ⟨hal-00912818⟩

  • Article dans une revue

UV irradiation study of a tripeptide isolated in an argon matrix: A tautomerism process evidenced by infrared and X-ray photoemission spectroscopies.

Eva Mateo-Marti, Claire-Marie Pradier

Matrix isolation is a powerful tool for studying photochemical processes occurring in isolated molecules. In this way, we characterized the chemical modifications occurring within a tri peptide molecule, IGF, when exposed to the influence of Ultraviolet (UV) irradiation. This paper first describes…

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy [1994-..], 2013, 109, pp.247-252. ⟨10.1016/j.saa.2013.02.034⟩. ⟨hal-00915960⟩

  • Article dans une revue

Selective hydrodechlorination of 1,2-dichloroethane on NiSiBEA zeolite catalyst: Influence of the preparation procedure on a high dispersion of Ni centers

R. Baran, I.I. Kamińska, A. Śrębowata, S. Dzwigaj

NixSiBEA zeolites (x = 1-2 Ni wt.%) were prepared by a two-steps postsynthesis method which consists of (1) creation of vacant T-sites by dealumination of tetraethylammonium BEA zeolite with nitric acid and then (2) impregnation of resulting SiBEA zeolite with an aqueous solution of Ni(NO3)2,…

Microporous and Mesoporous Materials, 2013, 169, pp.120-127. ⟨10.1016/j.micromeso.2012.11.005⟩. ⟨hal-00811551⟩

  • Article dans une revue

Role of oxygen vacancies in the basicity of ZnO: From the model methylbutynol conversion to the ethanol transformation application

C. Drouilly, J.M. Krafft, F. Averseng, H. Lauron-Pernot, Delphine Bazer-Bachi, Céline Chizallet, V. Lecocq, Guylène Costentin

The parameters governing the basic reactivity of kadox and ex-carbonate zinc oxide samples towards alcohol conversion were investigated varying the atmosphere of pre-treatment for a model reaction, the methylbutynol (MBOH) conversion, and the ethanol conversion reaction, a transformation of…

Applied Catalysis A : General, 2012, 453, pp.121-129. ⟨10.1016/j.apcata.2012.11.045⟩. ⟨hal-00811509⟩

  • Thèse

Etude du front de minéralisation du tissu osseux et des modèles biomimétiques associés, Study of the mineralization front in bone tissue and in biomimetic models

Marc Robin

Les travaux réalisés ont pour but de répondre à deux questions : comment le collagène s'organise-t-il dans l'os mature ? Comment la phase minérale de l'os se forme-t-elle et quel est l'effet de son environnement sur sa formation ? Nous avons étudié d'un point de vue…, This work aims to understand: How is reached the plywood architecture in bone? How is bone apatite formed and what is the effect of the environment on apatite formation? Thus, histological bone thin sections were investigated focusing on the interface between the osteoid and mature bone tissues.…

Chimie thérapeutique. Université Pierre et Marie Curie - Paris VI, 2016. Français. ⟨NNT : 2016PA066635⟩. ⟨tel-01907278v2⟩

  • Thèse

Preparation of amorphous silica-aluminas with enhanced acidic properties and spectroscopic identification of their acid sites, Préparation de silice-alumines amorphes avec des propriétés acides améliorées et identification spectroscopique de leurs sites acides

Xiaojing Jin

ASAs with enhanced acidity and a higher fraction of acidic Al were prepared by two experimental strategies. Their textures have been investigated by N2 adsorption–desorption and their acidic properties by FTIR of adsorbed probe molecule (pyridine or CO). Besides, isomerization of 33DMB1 was…, Des silice-alumines (SA) avec des propriétés acides améliorées et une fraction plus élevée d’aluminium acides ont été préparées en utilisant deux stratégies de synthèse. Leurs propriétés texturales ont été étudiées par physisorption de N2 et leurs propriétés acides par suivi FTIR de l’adsorption de…

Catalysis. Université Pierre et Marie Curie - Paris VI, 2017. English. ⟨NNT : 2017PA066355⟩. ⟨tel-02334604⟩