Laboratoire de réactivité de surface

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  • Article dans une revue

Controlling the reproducibility of Coulomb blockade phenomena for gold nanoparticles on an organic monolayer/silicon system

L Caillard, S Sattayaporn, A-F Lamic-Humblot, S Casale, P Campbell, y J Chabal, Olivier Pluchery

Two types of highly ordered organic layers were prepared on silicon modified with an amine termination for binding gold nanoparticles (AuNPs). These two grafted organic monolayers (GOMs), consisting of alkyl chains with seven or 11 carbon atoms, were grafted on oxide-free Si(111) surfaces as tunnel…

Nanotechnology, 2015, 26 (6), pp.065301. ⟨10.1088/0957-4484/26/6/065301⟩. ⟨hal-01114456⟩

  • Article dans une revue

Aqueous-Phase Preparation of Model HDS Catalysts on Planar Alumina Substrates: Support Effect on Mo Adsorption and Sulfidation

Cédric Bara, Lucie Plais, Kim Larmier, Elodie Devers, Mathieu Digne, Anne-Félicie Lamic-Humblot, Gerhard D. Pirngruber, Xavier Carrier

The role of the oxide support on the structure of the MoS2 active phase (size, morphology, orientation, sulfidation ratio, etc.) remains an open question in hydrotreating catalysis and biomass processing with important industrial implications for the design of improved catalytic formulations. The…

Journal of the American Chemical Society, 2015, 137 (50), pp.15915-15928. ⟨10.1021/jacs.5b10975⟩. ⟨hal-01263787⟩

  • Article dans une revue

Co, Fe and CoFe oxide nanoparticle assemblies within an ordered silica matrix: effects of the metal ions and synthesis pathway on the microstructure and magnetic properties

Laura Altenschmidt, Patricia Beaunier, Eric Rivière, Giulia Fornasieri, Amélie Bordage, Anne Bleuzen

The magnetic properties of nanoparticle assemblies strongly depend on the structural and morphological characteristics of the individual nanoparticles as well as on their organization within the assembly. Here, we present the synthesis of cobalt and/or iron oxide nanoparticles within the ordered…

The European Physical Journal. Special Topics, 2022, ⟨10.1140/epjs/s11734-022-00571-0⟩. ⟨hal-03723932⟩

  • Article dans une revue

Cation Migration and Structural Deformations upon Dehydration of Nickel-Exchanged NaY Zeolite: A Combined Neutron Diffraction and Monte Carlo Study

Wilfried Louisfrema, Jean-Louis Paillaud, Florence Porcher, Elsa Perrin, Thomas Onfroy, Pascale Massiani, Anne Boutin, Benjamin Rotenberg

Combining neutron diffraction and classical molecular simulations, we describe the cation migration and associated structural changes taking place in a Ni-exchanged NaY faujasite zeolite upon stepwise dehydration from room temperature up to 400 °C. The cation redistribution between sites and the…

Journal of Physical Chemistry C, 2016, 120 (32), pp.18115-18125. ⟨10.1021/acs.jpcc.6b05657⟩. ⟨hal-01485629⟩

  • Article dans une revue

Surface‐Dependent Activation of Model α‐Al2O3‐Supported P‐Doped Hydrotreating Catalysts Prepared by Spin Coating

Ricardo Garcia de Castro, Jérémy Bertrand, Baptiste Rigaud, Elodie Devers, Mathieu Digne, Anne‐félicie Lamic-Humblot, Gerhard Pirngruber, Xavier Carrier

Requirements for improved catalytic formulations is continuously driving research in hydrotreating (HDT) catalysis for biomass upgrading and heteroatom removal for cleaner fuels. The present work proposes a surface-science approach for the understanding of the genesis of the active (sulfide) phase…

Chemistry - A European Journal, 2020, 26 (64), pp.14623-14638. ⟨10.1002/chem.202001882⟩. ⟨hal-04025167⟩

  • Thèse

Design de composites verts pour la dépollution des terres agricoles : expérience et théorie, Design of green composite for the decontamination of agricultural land : experimental and theoretical

Khaled El Adraa

Des matériaux verts biodégradables à base de Montmorillonite et de cystéine ont été préparés dans le but de co-adsorber des cations de métaux lourds et des polluants émergeants en combinant l’expérience et la théorie (calculs DFT). Les analyses thermiques différentielles ont permis d’estimer le…, Layered silicates like smectites are important soil components. Many works have been devoted to functionalize these materials in order to increase their chelating properties which may help retain heavy metals. It is well known that Cd2+, Hg2+, Pb2+, Co2+ and Zn2+ forms stable complexes with sulfur…

Chimie-Physique [physics.chem-ph]. Université Pierre et Marie Curie - Paris VI, 2014. Français. ⟨NNT : 2014PA066539⟩. ⟨tel-01134688⟩

  • Article dans une revue

Effect of water on cobalt speciation during solid-state synthesis of Co2+/ZSM5 catalysts: quantitative study by TPR and XAS

Eric Marceau, Michel Che, Françoise Villain, Younès Ben Taarit

The effect of water on cobalt speciation in the synthesis of Co2+/ZSM5 catalysts is quantitatively studied by the combined use of macroscopic and local characterization techniques, TPR and X-ray absorption spectroscopies, respectively. The addition of a small quantity of water to cobalt acetate and…

Microporous and Mesoporous Materials, 2006, 93, pp.62-70. ⟨10.1016/j.micromeso.2006.02.004⟩. ⟨hal-00109394⟩

  • Article dans une revue

Transformations of γ-alumina in aqueous suspensions. 1. Alumina chemical weathering studied as a function of pH

Xavier Carrier, Eric Marceau, Jean-François Lambert, Michel Che

Hydration of γ-Al2O3 is often reported to occur via the superficial transformation of the alumina surface into alumina hydroxide-like layers. However, very little evidence has been given so far to support this hypothesis. It is demonstrated here by X-ray diffraction, TEM, electron diffraction and…

Journal of Colloid and Interface Science, 2007, 308, pp.429-437. ⟨10.1016/j.jcis.2006.12.074⟩. ⟨hal-00133775⟩

  • Article dans une revue

ADSORPTION ON STAINLESS STEEL SURFACES OF BIOSURFACTANTS PRODUCED BY GRAM-NEGATIVE AND GRAM-POSITIVE BACTERIA : CONSEQUENCE ON THE BIOADHESIVE BEHAVIOR OF PATHOGENIC STRAINS.

Thierry Meylheuc, Christophe Méthivier, Margareth Renault, Jean-Marie Herry, Claire-Marie Pradier, Marie-Noëlle Bellon-Fontaine

The ability of adsorbed biosurfactants (Pf and Lb) obtained from gram negative bacterium (Pseudomonas fluorescens) or gram positive bacterium (Lactobacillus helveticus) to inhibit adhesion of four listerial strains to stainless steel was investigated. These metallic surfaces were characterized…

Colloids and Surfaces B: Biointerfaces, 2006, 52 (2), pp.146-155. ⟨10.1016/j.colsurfb.2006.04.016⟩. ⟨hal-00111667⟩

  • Article dans une revue

Building of an immunosensor : how can the composition and structure of the thiol attachment layer affect the immunosensor efficiency ?

Elisabeth Briand, Michèle Salmain, Jean-Marie Herry, Hubert Perrot, Chantal Compere, Claire-Marie Pradier

Immunosensors, based on the immobilsation of model rabbit antibodies on a mixed self assembled monolyaers and Protein A as a linking agent on gold transducers, were elaborated and characterised at each step by Modulated polarisation- Infrared Spectroscopy (PM-IRRAS) and punctually by Atomic Force…

Biosensors and Bioelectronics, 2006, 22 (3), pp.440-448. ⟨10.1016/j.bios.2006.05.018⟩. ⟨hal-00111673⟩