• Article dans une revue

Probing the Binding Mechanism of Peptides on a Copper Surface: Multi layer Self-Assembly Promoted by Glutamate Residues

Christophe Methivier, Victor Lebec, Jessem Landoulsi, Claire-Marie Pradier

Short peptides interact strongly with copper surfaces We report here a full characterization on the Interaction of Gly-Pto and the Cu(110) surface: By combining infrared analysis with X-ray photoelectron spectroscopy, two binding centers have been identified: the carboxylate and the amino groups…

Journal of Physical Chemistry C, 2011, 115 (10), pp.4041-4046. ⟨hal-00602943⟩

• Article dans une revue

Anchoring of Pt(II) Pyridyl Complex to Mesoporous Silica Materials: Enhanced Photoluminescence Emission at Room Temperature and Photooxidation Activity using Molecular Oxygen

Kohsuke Mori, Kentaro Watanabe, Masayoshi Kawashima, Michel Che, Hiromi Yamashita

Chloro(2,2':6',2''-terpyridine)platinum(II) ([Pt(tpy)Cl]Cl) complex was successfully anchored to a series of (3-aminopropyl)trimethoxysilane-modified mesoporous silica materials (MCM-41, SBA-15, and MCM-48). Pt LIII-edge x-ray absorption fine structure (XAFS) measurements reveal…

Journal of Physical Chemistry C, 2011, 115 (4), pp.1044-1050. ⟨10.1021/jp105577f⟩. ⟨hal-00602944⟩

• Article dans une revue

In situ surface imaging: High temperature environmental SEM study of the surface changes during heat treatment of an Al Si coated boron steel

M. Barreau, C. Méthivier, T. Sturel, C. Allely, P. Drillet, S. Cremel, R. Grigorieva, B. Nabi, Renaud Podor, J. Lautru, V. Humblot, J. Landoulsi, X. Carrier

Al-Si coated boron steels have been of interest for many years because of their superior mechanical properties and their excellent oxidation resistance. These high strength steels are particularly used in hot stamping processes during which the Al-Si coating undergoes multiple microstructural…

Materials Characterization, 2020, 163, pp.110266. ⟨10.1016/j.matchar.2020.110266⟩. ⟨hal-03012691⟩

• Article dans une revue

Different Kinds of Tetrahedral V Species in Vanadium-Containing Zeolites Evidenced by Diffuse Reflectance UV-vis, Raman, and Periodic Density Functional Theory

Anna E. Lewandowska, Miguel A. Banares, Frederik Tielens, Michel Che, Stanislaw Dzwigaj

The combined use of DR-UV-vis and Raman spectroscopies allows one to evidence three kinds of tetrahedral V-V with different structure in V(x)SiBEA zeolite. In all cases, vanadium species possess distorted tetrahedral configuration. At very low vanadium content (0.05 wt %), the majority of…

Journal of Physical Chemistry C, 2010, 114 (46), pp.19771-19776. ⟨10.1021/jp107589d⟩. ⟨hal-00604774⟩

• Article dans une revue

In Situ Generation of Active Pd Nanoparticles within a Macroreticular Acidic Resin: Efficient Catalyst for the Direct Synthesis of Hydrogen Peroxide

Kohsuke Mori, Akihiro Hanafusa, Michel Che, Hiromi Yamashita

An acidic resin bearing SO3H functional groups within its reticular structure acts as an efficient support for the in situ formation of highly active Pd nanoparticles (NPs) responsible for the direct synthesis of hydrogen peroxide from H2 and O2. Characterization by means of X-ray absorption fine…

Journal of Physical Chemistry Letters, 2010, 1 (10), pp.1675-1678. ⟨10.1021/jz100509x⟩. ⟨hal-00604783⟩

• Communication dans un congrès

Identification of the interplay between Fe and Ni in bimetallic Fe-Ni/SiO2 catalysts for furfural hydrogenation

Dichao Shi, Jean-Sébastien Girardon, Anne Constant, Anne-Sophie Mamede, Robert Wojcieszak, Paul Sébastien, E. Marceau, Anne-Félicie Lamic-Humblot, Maya Marinova, Valérie Briois, Lorenzo Stievano, Moulay T. Sougrati

EuropaCat 2019, Aug 2019, Aachen, Germany. ⟨hal-03514739⟩

• Thèse

Bulk TiO2 vs alternative Ti-based photocatalysts for the mild aerobic oxidation of alcohols, Masse de TiO2 versus photocatalyseurs alternatifs à base de titane de l’oxydation ménagée et aérobie d’alcools

Diaa Obaid

A series of metal oxides semiconductors, including commercially available TiO2 or synthesized mesoporous samples, were tested as photocatalysts for the aerobic mild oxidation of alcohols in acetonitrile under UV. Benzyl alcohol, used as a reference, was oxidized mainly into benzaldehyde. Best yield…, Des oxydes semi-conducteurs, en particulier TiO2 commercialement disponible ou des échantillons mésoporeux synthétisés, ont été testés comme photocatalyseurs de l'oxydation ménagée et aérobie d'alcools dans l'acétonitrile sous UV. L'alcool benzylique a été oxydé principalement…

Theoretical and/or physical chemistry. Université Pierre et Marie Curie - Paris VI, 2017. English. ⟨NNT : 2017PA066578⟩. ⟨tel-01913747⟩

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An Experimental and Theoretical Approach to Investigate the Effect of Chain Length on Aminothiol Adsorption and Assembly on Gold

Erin Bedford, Vincent Humblot, Christophe Méthivier, Claire-Marie Pradier, Frank Gu, Frederik Tielens, Souhir Boujday

Despite the numerous studies on the self-assembled monolayers (SAMs) of alkylthiols on gold, the mechanisms involved, especially the nature and influence of the thiol-gold interface are still under debate. In this work the adsorption of aminothiols on Au(111) surfaces has been studied by using…

Chemistry - A European Journal, 2015, 21 (41), pp.14555-14561. ⟨10.1002/chem.201500653⟩. ⟨hal-01275048⟩

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Isopropanol Dehydration on Amorphous Silica–Alumina: Synergy of Brønsted and Lewis Acidities at Pseudo-Bridging Silanols

Kim Larmier, Céline Chizallet, Sylvie Maury, Nicolas Cadran, Johnny Abboud, Anne-Félicie Lamic-Humblot, Eric Marceau, Hélène Lauron-Pernot

The mechanism of isopropanol dehydration on amorphous silica–alumina (ASA) was unraveled by a combination of experimental kinetic measurements and periodic density functional theory (DFT) calculations. We show that pseudo-bridging silanols (PBS-Al) are the most likely active sites owing to the…

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Non-biological selectivity in amino acids polymerization on TiO2 nanoparticles

Maguy Jaber, Jolanda Spadavecchia, Houssein Bazzi, Thomas Georgelin, France Costa-Torro, Jean-François Lambert

For the first, time a strong selectivity is evidenced in inorganic peptide synthesis. When an equimolar mixture of Ala and Arg monomers is added to the synthesis medium of TiO2 nanoparticles from Ti(IV) isopropoxide in benzyl alcohol, the Ala-Arg dipeptide is observed by 13C NMR in the resulting…

Amino Acids, 2013, 45, pp.403-406. ⟨10.1007/s00726-013-1516-y⟩. ⟨hal-00957907⟩