Laboratoire de réactivité de surface

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  • Chapitre d'ouvrage

Influence of Large Magnetic Field Gradients at the Electrochemical Interface

Jinu Kurian, Peter Dunne, Vincent Vivier, Gwenael Atcheson, Ruslan Salikhov, Ciaran Fowley, Munuswamy Venkatesan, Olav Hellwig, Michael Coey, Bernard Doudin

We investigate how a model single-electron-exchange electrochemical reaction can be influenced by a magnetic field, B, which is a combination of an external applied field and the stray field generated by a Co/Pt multilayer thin film stack with preferred perpendicular magnetization. The Lorentz…

Bernard Doudin; Michael Coey; Andrejs Cēbers. Magnetic Microhydrodynamics: An Emerging Research Field, 120, Springer, pp.111--130, 2024, Topics in Applied Physics, 978-3-031-58375-9. ⟨10.1007/978-3-031-58376-6_9⟩. ⟨hal-04956800⟩

  • Article dans une revue

Methanol oxidation on VSiBEA zeolites: Influence of V content on the catalytic properties

Marciej Tredja, Maria Ziolek, Yannick Millot, Karolina Chalupka, Michel Che, Stanislaw Dziwag

This study deals with the influence of V content on the catalytic properties of VxSiBEA zeolites in the oxidation of methanol. The samples are prepared following a postsynthesis method reported earlier (S. Dzwigaj, M.J. Peltre, P. Massiani, A. Davidson, M. Che, T. Sen, S. Sivasanker, Chem. Commun…

Journal of Catalysis, 2011, 281 (1), pp.169-176. ⟨10.1016/j.jcat.2011.04.013⟩. ⟨hal-00663368⟩

  • Article dans une revue

Effect of vanadium dispersion and support properties on the catalytic activity of V-SBA-15 and V-MCF mesoporous materials prepared by direct synthesis

Marco Piumetti, Barbara Bonelli, Pascale Massiani, Stanislaw Dzwigaj, Llenia Rossetti, Sandra Casale, Lucia Gaberova, Marco Armandi, Edorado Garrone

Direct synthesis route was developed to support TiO2-ZrO2 binary metal oxide onto the carbon templated mesoporous silicalite-1 (CS-1). Metal hydroxide modified carbon particles could play a role as hard template and simultaneously support metal components on the mesopores during the crystallization…

Catalysis Today, 2011, 176, pp.458-464. ⟨10.1016/j.cattod.2010.10.066⟩. ⟨hal-00667426⟩

  • Article dans une revue

New insights into the development of Brønsted acidity of niobic acid

Vanessa Lebarbier, Marwan Houalla, Thomas Onfroy

The development of Brønsted acidity and the relationship between acidity, catalytic performance and structure of niobium oxide were investigated for a series of samples prepared by calcination of niobic acid at temperatures between 423 and 823 K. All solids were active for propan-2-ol dehydration.…

Catalysis Today, 2012, 192, pp.123-129. ⟨10.1016/j.cattod.2012.02.061⟩. ⟨hal-00745977⟩

  • Article dans une revue

Surface plasmon resonance biosensors incorporating gold nanoparticles.

Erin Bedford, Jolanda Spadavecchia, Claire-Marie Pradier, Frank Gu

SPR biosensing is increasingly popular for the detection of a multitude of biomolecules. It offers label-free detection and study of proteins, nucleic acids, and other biomolecules in real time. A recent trend involves incorporation of AuNPs, either within the sensing surface itself or as signal…

Macromolecular Bioscience, 2012, 12, pp.724-739. ⟨10.1002/mabi.201100435⟩. ⟨hal-00745836⟩

  • Article dans une revue

Bioconjugated gold nanorods to enhance the sensitivity of FT-SPR-based biosensors

Jolanda Spadavecchia, Sandra Casale, Souhir Boujday, Claire-Marie Pradier

n this paper, we report a feasible solvent-free approach for the synthesis and self-assembling of gold nanorods after bioconjugation to antibodies; scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images revealed a remarkable shape and size narrow distribution, as well…

Colloids and Surfaces B: Biointerfaces, 2012, 100, pp.1-8. ⟨10.1016/j.colsurfb.2012.03.035⟩. ⟨hal-00744490⟩

  • Article dans une revue

Selective catalytic reduction of NO on single site FeSiBEA zeolite catalyst: Influence of the C1 and C2 reducing agents on the catalytic properties

Janusz Janas, Wojciech Rojek, Tetsuya Shishido, Stanislaw Dzwigaj

FeSiBEA zeolite with 0.8 Fe wt% is prepared in acidic condition (pH 2.5) by a two-step postsynthesis method which allows to incorporate iron into framework of zeolite as mononuclear distorted tetrahedral Fe(III) species, as evidenced by XRD, diffuse reflectance UV-vis and X-ray absorption…

Applied Catalysis B: Environmental, 2012, 123-124, pp.134-140. ⟨10.1016/j.apcatb.2012.04.026⟩. ⟨hal-00744653⟩

  • Article dans une revue

Iron topochemistry and surface reactivity of amphibole asbestos: relations with in vitro toxicity

A. Pacella, Giovanni B. Andreozzi, Jeanine Fournier, Lorenzo Stievano, F. Giantomassi, Guendalina Lucarini, Maria Rita Rippo, A. Pugnaloni

Chemical reactivity of asbestos tremolite from Italy and USA localities and Union Internationale Contre le Cancer (UICC) crocidolite was studied in relation to Fe content, oxidation state, and structural coordination. Direct correlation between amount of Fe2+ at the exposed M(1) and M(2) sites of…

Analytical and Bioanalytical Chemistry, 2011, 402, pp.871-881. ⟨10.1007/s00216-011-5525-y⟩. ⟨hal-00687590⟩

  • Article dans une revue

Bioengineering of stainless steel surface by covalent immobilization of enzymes. Physical characterization and interfacial enzymatic activity

Anne Caro, Vincent Humblot, Christophe Methivier, Michel Minier, Lucica Barbes, Joachim Li, Michele Salmain, Claire-Marie Pradier

Two hydrolytic enzymes, namely lysozyme and trypsin, were covalently immobilized onto stainless steel surfaces using wet chemistry processes. The immobilization strategy took advantage of the spontaneous physisorption of the polymer poly(ethylene imine) (PEI) onto stainless steel to yield a firmly…

Journal of Colloid and Interface Science, 2010, 349 (1), pp.13-18. ⟨10.1016/j.jcis.2009.12.001⟩. ⟨hal-00604709⟩

  • Article dans une revue

Highly porous and monodisperse magnetic silica beads prepared by a green templating method

Sebastien Abramson, Clementine Meiller, Patricia Beaunier, Vincent Dupuis, Laurent Perrigaud, Agnes Bee, Valerie Cabuil

We describe the prepn. of magnetic silica nanocomposite millimetric beads using alginate as a green biopolymer template. The simple and soft method which is used here is particularly suitable since the alginate template allows a multiscale control of the structure of the material, both its morphol…

Journal of Materials Chemistry, 2010, 20 (23), pp.4916-4924. ⟨10.1039/C000525H⟩. ⟨hal-00604697⟩