Laboratoire de réactivité de surface

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  • 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

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⟩

  • Article dans une revue

Current state of electrochemical techniques and corrosion rate analysis for next-generation materials

Junsoo Han, Oumaïma Gharbi

Current theoretical models and electrochemical techniques used to investigate corrosion mechanisms, including corrosion rates, have been tailored for conventional alloy systems. However, the application of conventional theories and techniques toward next-generation alloys such as multi-principal…

Current Opinion in Electrochemistry, 2022, 36, pp.101131. ⟨10.1016/j.coelec.2022.101131⟩. ⟨hal-03776989⟩

  • Article dans une revue

Semiconductor quantum dots reveal dipolar coupling from exciton to ligand vibration

T. Noblet, L. Dreesen, S. Boujday, C. Methivier, Bertrand Busson, A. Tadjeddine, Christophe Humbert

Within semiconductor quantum dots (QDs), exciton recombination processes are noteworthy for depending on the nature of surface coordination and nanocrystal/ligand bonding. The influence of the molecular surroundings on QDs optoelectronic properties is therefore intensively studied. Here, from the…

Communications Chemistry, 2018, 1, pp.76. ⟨10.1038/s42004-018-0079-y⟩. ⟨hal-02111047v2⟩

  • Article dans une revue

Antibacterial properties of glycosylated surfaces: variation of the glucosidal moiety and fatty acid conformation of grafted microbial glycolipids

Claire Valotteau, Sophie Roelants, Dasaiyan Prabhu, Susanne Zibek, Michael Günther, Wim Soetaert, Bernd Everaert, Claire-Marie Pradier, Florence Babonneau, Niki Baccile, Vincent Humblot

Glycosylated surfaces can display antimicrobial properties. It has been shown that sophorolipids can be used to develop biocidal coatings against Gram-positive and Gram-negative bacteria, but with a limited efficiency so far. Therefore, it appears necessary to further investigate the surface…

Molecular Systems Design & Engineering, 2020, 5 (7), pp.1307 - 1316. ⟨10.1039/D0ME00059K⟩. ⟨hal-03414300⟩

  • Article dans une revue

PdAg nanoparticles and aminopolymer confined within mesoporous hollow carbon spheres as an efficient catalyst for hydrogenation of CO 2 to formate

Guoxiang Yang, Yasutaka Kuwahara, Shinya Masuda, Kohsuke Mori, Catherine Louis, Hiromi Yamashita

PdAg alloy nanoparticles and aminopolymer dispersed in hollow structured carbon catalysts exhibit high activity and stability for CO 2 hydrogenation.

Journal of Materials Chemistry A, 2020, 8 (8), pp.4437-4446. ⟨10.1039/c9ta13389e⟩. ⟨hal-03995337⟩