Laboratoire de réactivité de surface

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  • Article dans une revue

A comparative study of alanine adsorption and condensation to peptides in two clay minerals

Fabrícia de Castro Silva, Luciano Clécio Brandão Lima, Edson Silva-Filho, Maria Gardennia Fonseca, Jean-François Lambert, Maguy Jaber

The polycondensation of amino acids to oligopeptides is an important step in the origins of life, and known to be effective on several mineral surfaces. The data available on clay mineral surfaces are heterogeneous and sometimes contradictory, however. The objective of the present work is to…

Applied Clay Science, 2020, 192, pp.105617. ⟨10.1016/j.clay.2020.105617⟩. ⟨hal-02887409⟩

  • Article dans une revue

Covalent Grafting of Organic–Inorganic Polyoxometalates Hybrids onto Mesoporous SBA-15: A Key Step for New Anchored Homogeneous Catalysts

Richard Villanneau, Asma Marzouk, Yan Wang, Aicha Ben Djamaa, Guillaume Laugel, Anna Proust, Franck Launay

Covalent grafting of the polyoxometalate (POM) hybrid [AsW9O33{P(O)(CH2CH2CO2H)}2]5- on mesoporous NH2-functionalized SBA-15 is the first example of anchored vacant POMs in which nucleophilic oxygen atoms are still available after incorporation into the supports. Such systems are interesting…

Inorganic Chemistry, 2013, 52 (6), pp.2958 - 2965. ⟨10.1021/ic302374v⟩. ⟨hal-01563887⟩

  • Article dans une revue

Structured hybrid nanoparticles via surface-initiated ATRP of methyl methacrylate from ordered mesoporous silica

F. Audouin, H. Bias, P. Pasetto, P. Beaunier, C. Boissiere, C. Sanchez, M. Save, B. Charleux

Structured hybrid nanoparticles were synthesized via surface-initiated atom transfer radical polymerization of MMA from ordered mesoporous silica (QMS) nanoparticles with various morphologies. The design of the QMS particles was adjusted to target either spherical core-shell or cylindrical…

Macromolecular Rapid Communications, 2008, 29 (11), pp.914-921. ⟨10.1002/marc.200800179⟩. ⟨hal-01563804⟩

  • Thèse

Préparation de nanoparticules de rhodium(0) sur support mésoporeux assistée par des sels d'ammonium quaternaires : Application à la catalyse d'hydrogénation asymétrique d'arènes prochiraux, Preparation of rhodium (0) nanoparticles on mesoporus support assisted by quaternary ammonium salts : application to asymmetric hydrogenation of prochiral arenes

Rita Sassine

Ces travaux de thèse visent à développer de nouveaux catalyseurs associant les activités prometteuses des nanoparticules de Rh(0) et l'effet de confinement des supports mésoporeux pour des applications en hydrogénation asymétrique dans l'eau. Des particules ont été préparées par réaction…, This thesis aims to develop new catalysts combining Rh(0) nanoparticles with promising activities and the confinement effect of mesoporous materials for applications in asymmetric hydrogenation in water. Particles were prepared by the reaction of NaBH4 with RhCl3, directly, within silicic (SBA-15)…

Génie des procédés. Université Pierre et Marie Curie - Paris VI, 2012. Français. ⟨NNT : 2012PA066053⟩. ⟨tel-00834363⟩

  • Article dans une revue

Revealing the Interplay between Adsorbed Molecular Layers and Gold Nanoparticles by Linear and Nonlinear Optical Properties

Laetitia Dalstein, Maroua Ben Haddada, Grégory Barbillon, Christophe Humbert, Abderrahmane Tadjeddine, Souhir Boujday, Bertrand Busson

Gold nanoparticles (AuNPs) chemically grafted on substrates are widely used as sensors due to their plasmonic properties. The efficiency and robustness of such sensors strongly depend on the molecular sublayer structure, which influences the distribution of AuNPs, and therefore the plasmonic…

Journal of Physical Chemistry C, 2015, 119 (30), pp.17146-17155. ⟨10.1021/acs.jpcc.5b03601⟩. ⟨hal-02111041⟩

  • Pré-publication, Document de travail

Preparation of Supported Gold Nanoparticles by a Modified Incipient Wetness Impregnation Method

Laurent Delannoy, Nissrine El Hassan, Andrea Musi, Nga Nguyen Le To, Jean-Marc Krafft, Catherine Louis

In this work, we show that if the mere procedure of impregnation of oxide supports with chloroauric acid, which is well-known to lead to large gold particles, is followed by a step of washing with ammonia, small gold particles (3-4 nm) can be obtained after a treatment of calcination at 300 °C on…

2006. ⟨hal-00115962⟩

  • Article dans une revue

Oxidation and Surface Segregation Behavior of a Pt–Pd–Rh Alloy Catalyst

Paul A. J. Bagot, Karen Kruska, Daniel Haley, Xavier Carrier, Eric Marceau, Michael. P. Moody, George D. W. Smith

Platinum gauze catalysts are used extensively in the production of nitricacid from ammonia, where they are subject to harsh operating conditions combiningelevated temperatures and oxidizing environments. These cause significant loss of metalspecies as volatile oxides. How different metallic species…

Journal of Physical Chemistry C, 2014, 118 (45), pp.26130−26138. ⟨10.1021/jp508144z⟩. ⟨hal-01089821⟩

  • Article dans une revue

Pseudoaneurysm of anterior tibial artery following a diaphyseal fracture ă of the tibia mimicking a malignant bone tumor

Pierre Sautet, Elie Choufani, Philippe Petit, Franck Launay, Jean-Luc Jouve, Sebastien Pesenti

Pseudoaneurysms of the lower limb are rare and frequently iatrogenics ă complications. Closed traumas are likely to generate lesions of the ă arterial wall, which generally become symptomatic at a later stage. The ă diagnosis of such vascular lesion is difficult because the ă symptomatology and the…

Archives of Orthopaedic and Trauma Surgery, 2016, 136 (9), pp.1247-1250. ⟨10.1007/s00402-016-2525-6⟩. ⟨hal-01482636⟩

  • Article dans une revue

An EPR characterisation of stable and transient reactive oxygen species formed under radiative and non-radiative conditions

E. Richards, D. M Murphy, M. Che

Electron paramagnetic resonance (EPR) spectroscopy is the ideal method of choice when detecting and studying the wide variety of paramagnetic oxygen-centred radicals. For simple diatomic radicals, such as the superoxide (O 2 −) or peroxy (ROO •) species, the CW EPR profile (in particular the g-…

Research on Chemical Intermediates, 2019, 45 (12), pp.5763-5779. ⟨10.1007/s11164-019-04001-0⟩. ⟨hal-02355558⟩

  • Article dans une revue

Synthesis and Treatment Parameters for Controlling Metal Particle Size and Composition in Cu/ZnO MaterialsFirst Evidence of Cu3Zn Alloy Formation

Salim Derrouiche, Hélène Lauron-Pernot, Catherine Louis

This paper deals with the study of the conditions of obtention of small metal copper particles on ZnO using easy synthesis methods and activation treatments, which were found "efficient" for the preparation of copper particles on silica, that is, deposition-precipitation with urea and…

Chemistry of Materials, 2012, 24, pp.2282−2291. ⟨10.1021/cm3001915⟩. ⟨hal-00745898⟩