Laboratoire de réactivité de surface

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  • Article dans une revue

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⟩

  • Article dans une revue

Assessing the Oxidation Behavior of EC:DMC Based Electrolyte on Non- Catalytically Active Surface

Iban Azcarate, Wei Yin, Christophe Méthivier, François Ribot, Christel Laberty-Robert, Alexis Grimaud

The race for developing Li-ion batteries positive electrodes with always greater energy density has recently renewed interest towards understanding the formation of the so-called cathode electrolyte interface (CEI) forming upon cycling at high potential. In this work, we used an approach combining…

Journal of The Electrochemical Society, 2020, 167 (8), pp.080530. ⟨10.1149/1945-7111/ab8f57⟩. ⟨hal-02640318⟩

  • Article dans une revue

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⟩

  • Article dans une revue

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⟩

  • Article dans une revue

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⟩

  • Article dans une revue

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⟩

  • Article dans une revue

Using Prussian blue analogue nanoparticles confined into ordered mesoporous silica monoliths as precursors of oxides

Virgile Trannoy, Émilie Delahaye, Giulia Fornasieri, Patricia Beaunier, Anne Bleuzen

Powdered Prussian blue analogues (PBAs) and PBAs confined in ordered mesoporous silica monoliths were used as oxide precursors through thermal treatment under an oxidizing atmosphere. The study focuses on the transformation of the alkali cation-free CoCo PBA of chemical formula K0.1CoII4[CoIII(CN)6…

Comptes Rendus. Chimie, 2014, 17 (6), pp.512-520. ⟨10.1016/j.crci.2014.02.001⟩. ⟨hal-01078316⟩

  • Article dans une revue

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⟩

  • Article dans une revue

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⟩

  • Pré-publication, Document de travail

Quantifying Cell Traction Forces at the Individual Fiber Scale in 3D: A Novel Approach Based on Deformable Photopolymerized Fiber Arrays

Pierre Ucla, Joanne Le Chesnais, Henri Ver Hulst, Xingming Ju, Isabel Calvente, Ludovic Leconte, Jean Salamero, Isabelle Bonnet, Catherine Monnot, Hélène Moreau, Jessem Landoulsi, Vincent Semetey, Sylvie Coscoy

The forces exerted by cells upon the fibers of the extracellular matrix play a decisive role in cell motility in development and disease. How the local physical properties of the matrix (such as density, stiffness, orientation) affect cellular forces remains poorly understood. Existing approaches…

2024. ⟨hal-04795582⟩