• Article dans une revue

Cysteine-montmorillonite composites for heavy metal cation complexation: A combined experimental and theoretical study

Khaled El Adraa, Thomas Georgelin, Jean-François Lambert, Farouk Jaber, Frederik Tielens, Maguy Jaber

Green composites based on montmorillonite (Mt) and cysteine, were prepared for heavy metal removal. A comparison between the adsorption properties of the resulting hybrid inorganic-organic materials and the pure montmorillonite was carried out for the following heavy metal cations Cd2+, Hg2+, Pb2…

Chemical Engineering Journal, 2017, 314, pp.406 - 417. ⟨10.1016/j.cej.2016.11.160⟩. ⟨hal-01490419⟩

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Characterization of Supported Vanadium Oxide Species on Silica: A Periodic DFT Investigation

Mazharul M. Islam, Dominique Costa, Monica Calatayud, Frederik Tielens

The geometry, energetic, and spectroscopic properties of molecular structures of silica-supported vanadium oxide catalysts are studied using periodic density functional calculations. Isolated vanadia units deposed on amorphous silica are modeled at low coverage, 0.44 atoms nm(-2). The models are…

Journal of Physical Chemistry C, 2009, 113 (24), pp.10740-10746. ⟨10.1021/jp902818m⟩. ⟨hal-01361362⟩

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Exploring the reactivity of mixed omega-functionalized undecanethiol self-assembled monolayers - A DFT study

Frederik Tielens, Vincent Humblot, Claire-Marie Pradier

The reactive sites of self-assembled monolayers (SAM) formed by substituted thiolalkyl chains have been predicted in the case of the pure mercaptoundecane acid, for the pure mercaptoundecane alcohol, and the mixed 1:1 SAMs. The differences in reactivity between the different SAM domains (pure and…

International Journal of Quantum Chemistry, 2008, 108 (10), pp.1792-1795. ⟨10.1002/qua.21600⟩. ⟨hal-01361371⟩

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How dusty is α Centauri?

J. Wiegert, R. Liseau, P. Thebault, G. Olofsson, A. Mora, G. Bryden, J. Marshall, C. Eiroa, B. Montesinos, D. Ardila, J. Augereau, A. Bayo Aran, W. Danchi, C. del Burgo, S. Ertel, M. Fridlund, M. Hajigholi, A. Krivov, G. Pilbratt, A. Roberge, G. White, S. Wolf

Astronomy & Astrophysics - A&A, 2014, 563, pp.A102. ⟨10.1051/0004-6361/201321887⟩. ⟨hal-02574414⟩

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One Step up the Ladder of Prebiotic Complexity: Formation of Nonrandom Linear Polypeptides from Binary Systems of Amino Acids on Silica

Yuriy Sakhno, Alice Battistella, Alberto Mezzetti, Maguy Jaber, Thomas Georgelin, Laurent Michot, Jean-François Lambert

Evidence for the formation of linear oligopeptides with nonrandom sequences from mixtures of amino acids coadsorbed on silica and submitted to a simple thermal activation is presented. The amino acid couples (glutamic acid+leucine) and (aspartic acid+valine) were deposited on a fumed silica and…

Chemistry - A European Journal, 2019, 25 (5), pp.1275-1285. ⟨10.1002/chem.201803845⟩. ⟨hal-02067461⟩

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Phosphate Boosts Nonhydroxyl Radical Species Production upon Air Oxidation of Magnetite and Iron Sulfides at Neutral pH

Guillaume Morin, Frédéric Averseng, Xavier Carrier, Pierre Le Pape, Yishan Du, Yusheng Honge, Elora Bourbon, Giuseppe Sportelli, Tiago A da Silva, Alberto Mezzetti, Camille Baya, Thierry Allard, Jessica Brest, Maryse Rouelle

Heterogeneous Fenton-like reactions using O2 as sole oxidant are gaining interest for designing organic contaminant degradation in soils and groundwaters, since they may provide alternatives to current processes involving strong oxidants. Indeed, several Fe(II)-bearing oxide and sulfide mineral…

Journal of Physical Chemistry C, 2023, 127 (20), pp.9650-9662. ⟨10.1021/acs.jpcc.3c02236⟩. ⟨hal-04248112⟩

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Triple structuration and enhanced corrosion performance of 316L in Laser-Powder Bed Fusion

Alexis Fouchereau, Hicham Maskrot, Fernando Lomello, Sophie Bosonnet, Oumaïma Gharbi, Benoit Gwinner, Pierre Laghoutaris, Frédéric Schuster, Vincent Vivier, Beatriz Puga

This work focuses on the influence of the feedstock powders on the microstructural properties and corrosion behavior of 316L stainless steel (SS) produced by laser powder bed fusion (L-PBF) from two different suppliers. Microstructural investigations conducted after additive manufacturing reveal…

Corrosion Science, 2024, 228, pp.111830. ⟨10.1016/j.corsci.2024.111830⟩. ⟨cea-04602059⟩

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In Vitro Cytotoxicity and Transforming Potential of Industrial Carbon Dust (Fibers and Particles) in Syrian Hamster Embryo (SHE) Cells

C. Darne, F. Terzetti, C. Coulais, Jeanine Fournier, Y. Guichard, L. Gate, S. Binet

Carbon fibers have many applications, mainly in high-tech industries such as the aviation industry. Eleven carbon samples (fibers and particles) coming from an aeronautic group were tested for their cytotoxicity and carcinogenic potential using in vitro short-term assays in Syrian hamster embryo…

Annals of Occupational Hygiene, 2010, 54 (5), pp.532-544. ⟨10.1093/annhyg/meq012⟩. ⟨hal-00604711⟩

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The role of organic additives in the synthesis of mesoporous aluminas and Ni/mesoporous alumina catalysts

Faiza Bentaleb, Eric Marceau

Mesoporous aluminas can be prepd. using org. additives as porogens even if these are not surfactants, as is the case for glucose. It is shown here that porosity arises from glucose entrapped in the material pptd. at the beginning of the synthesis, and subsequently caramelized. After impregnation by…

Studies in Surface Science and Catalysis, 2010, 175 (Scientific Bases for the Preparation of Heterogeneous Catalysts), pp.311-314. ⟨hal-00604700⟩

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Activation of C‐H Bond of Propane by Strong Basic Sites Generated by Bulk Proton Conduction on V‐Modified Hydroxyapatites for the Formation of Propene

Sarah Petit, Cyril Thomas, Yannick Millot, Jean-Marc Krafft, Christel Laberty-Robert, Guylène Costentin

Insights into the catalytic transformation of propane to propene on V‐apatites catalysts are provided based on structure‐reactivity relationships. Substitution of phosphates by vanadates in the hydroxyapatite structure leads to the formation of Ca10(PO4)6‐x(VO4)x(OH)2‐yOy V‐oxy‐hydroxy‐apatite…

ChemCatChem, 2020, 12 (9), pp.2506-2521. ⟨10.1002/cctc.201902181⟩. ⟨hal-02503822⟩