• Article dans une revue

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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Speciation of chromium on a straw lignin: adsorption isotherm, EPR, and XAS studies

Karine Flogeac, Emmanuel Guillon, E. Marceau, Michel Aplincourt

New Journal of Chemistry, 2003, 27 (4), pp.714-720. ⟨10.1039/b211411a⟩. ⟨hal-03032210⟩

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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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Accessibility of Co3O4 nanoparticles patterned in SBA-15

Irène Lopes, Nissrine El Hassan, Gilles Wallez, Cyril Thomas, Anne Davidson

Calibrated crystalline Co3O4 nanoparticles with a narrow size distribution were synthesized inside the pores of SBA-15 silicas and studied by HR-TEM, XRD and Raman spectroscopy. Preferential orientation and size-related structural modifications are revealed. The reactivity for CO oxidation and the…

Studies in Surface Science and Catalysis, 2007, 170B, pp.1213-1221. ⟨hal-00181050⟩

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One-Pot Radiolytic Synthesis of Gold Nanorods and Their Optical Properties

Wafa Abidi, P. R. Selvakannan, Yanick Guillet, Isabelle Lampre, Patricia Beaunier, Brigitte Pansu, Bruno Palpant, Hynd Remita

A novel one-pot synthesis method to prepare gold nanorods of different aspect ratios using radiolysis is presented. The gold nanorods are synthesized by radiolytic reduction of Au-III complexes in a micellar solution formed by a mixture of cationic surfactants (cetyltrimethylammonium bromide and…

Journal of Physical Chemistry C, 2010, 114 (35), pp.4794-14803. ⟨10.1021/jp104819c⟩. ⟨hal-00833023⟩

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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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Should W Surface Density of WOx-ZrO2 Catalysts Be Calculated With Respect To the Specific Surface Area of the Sample or That of ZrO2 Only?

Cyril Thomas

On the basis of the critical analysis of the NOx-TPD data obtained on WOx-ZrO2 samples [Law, H. Y.; Blanchard, J.; Carrier, X.; Thomas, C. J. Phys. Chem. C 2010, 114, 9731], this work provides convincing arguments for the first time upon which calculation of W surface density should be done by…

Journal of Physical Chemistry C, 2011, 115 (5), pp.2253-2256. ⟨10.1021/jp110497e⟩. ⟨hal-00602957⟩

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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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Identification and Distribution of Surface Ions in Low Coordination of CaO Powders with Photoluminescence Spectroscopy

Hugo Petitjean, Jean-Marc Krafft, Michel Che, Helene Lauron-Pernot, Guylene Costentin

Oxide ions in low coordination (O-LC(2-)) Play a major role in adsorption and catalysis properties of CaO powders. They also give specific photoluminescence features that could be used to characterize the distribution of these ions at the molecular level, but up to now, the photoluminescence of…

Journal of Physical Chemistry C, 2011, 115 (3), pp.751-756. ⟨10.1021/jp110193k⟩. ⟨hal-00602946⟩

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Immobilization of polyoxometalate hybrid catalysts onto mesoporous silica supports using phenylene diisothiocyanate as a cross-linking agent

Ourania Makrygenni, Dalil Brouri, Anna Proust, Franck Launay, Richard Villanneau

The hybrid derivative of heteropolytungstate bearing two aniline groups, namely (nBu4N)3[NaHPW9O34{As(O)C6H4NH2}2], was post-functionalized in the presence of 1,4-phenylene diisothiocyanate (PDITC). The resulting molecular moiety was characterized by IR, 1H and 31P NMR spectroscopy. In a second…

Microporous and Mesoporous Materials, 2018, 278, pp.314-321. ⟨10.1016/j.micromeso.2018.11.036⟩. ⟨hal-02143825⟩