• Article dans une revue

Versatile and robust synthesis process for the fine control of the chemical composition and core-crystallinity of spherical core-shell Au@Ag nanoparticles

Suyeon Lee, Hervé Portalès, Michael Walls, Patricia Beaunier, Nicolas Goubet, Benoit Tremblay, Jérémie Margueritat, Lucien Saviot, Alexa Courty

Au nanoparticles (NPs) characterized by distinct surface chemistry (including dodecanethiol or oleylamine as capping agent), different sizes (~5 and ~10 nm) and crystallinities (polycrystalline or single crystalline), were chosen as seeds to demonstrate the versatility and robustness of our two-…

Nanotechnology, 2021, 32, pp.095604. ⟨10.1088/1361-6528/abc450⟩. ⟨hal-02994816⟩

• Article dans une revue

Simple procedure for vacant POM-stabilized palladium (0) nanoparticles in water: structural and dispersive effects of lacunary polyoxometalates

R. Villanneau, A. Roucoux, P. Beaunier, D. Brouri, A. Proust

Metallic palladium nanoparticles have been generated by hydrogenation with H2 of solutions of several non organometallic PdII-derivatives of heteropolytungstates, at ambient temperature and atmospheric pressure. These nanoparticles have been characterized by various techniques: 31P NMR and Raman…

RSC Advances, 2014, 4 (50), pp.26491-26498. ⟨10.1039/C4RA03104K⟩. ⟨hal-01121577⟩

• Poster de conférence

Nanostructure Characterization of Carbide-derived Carbons by Morphological Analysis of Transmission Electron Microscopy Images Combined with Physisorption and Raman Spectroscopy

Martin Oschatz, Pascaline Pre, Patricia Beaunier, Stefan Kaskel, Nickel Wielfried

11th international Symposium on the characterization of porous solids COPS XI, May 2017, Avignon, France. ⟨hal-02881501⟩

• Article dans une revue

On the preparation of multifunctional conversion coatings of FePO 4 /LiFePO 4

S. Valverde-Pérez, R. Figueroa, X.R. Nóvoa, D.S. Ramírez-Rico, Vincent Vivier

This research aims to take advantage of the properRes of phosphate coaRngs to overcome the problems inherent in using LiFePO4 as a powder. LiFePO4 coaRngs have been prepared on iron sheets using cyclic voltammetry in an aqueous soluRon of H3PO4 and LiOH. The voltammograms evolved from the iniRal…

Surface and Coatings Technology, 2024, 479, pp.130548. ⟨10.1016/j.surfcoat.2024.130548⟩. ⟨hal-04775533⟩

• Article dans une revue

Gold/Polyoxometalate Core/Shell Nanoparticles for Combined Chemotherapy–Photothermal Cancer Therapy

Somia Tomane, Claire Wilhelm, Souhir Boujday, Alexandre Fromain, Antoine Miche, Flavien Bourdreux, Anne Dolbecq, Pierre Mialane, Anne Vallée

We designed monodisperse and perfectly shaped core/shell AuNP@Mo4Zol2Mn nanohybrids consisting of gold nanoparticles (AuNPs) functionalized by an antitumoral polyoxometalate (POM) incorporating the biologically active zoledronate ligand. After incubation, the nanoparticles were readily confined in…

ACS Applied Nano Materials, 2021, 4 (3), pp.2339-2344. ⟨10.1021/acsanm.0c03187⟩. ⟨hal-03214106⟩

• Article dans une revue

Thiol-Poly(Sodium Styrene Sulfonate) (PolyNaSS-SH) Gold Complexes: From a Chemical Design to a One-Step Synthesis of Hybrid Gold Nanoparticles and Their Interaction with Human Proteins

Ceĺine Falentin-Daudre, Mounia Aitouakli, Jean Sebastien Baumann, Nadia Bouchemal, Vincent Humblot, Veronique Migonney, Jolanda Spadavecchia

This study highlights recent advances in the synthesis of nanoconjugates based on gold (Au(III)) complex with a bioactive polymer bearing sulfonate groups called thiol-poly(sodium styrene sulfonate) (PolyNaSS-SH) with various molecular weights (5, 10, and 35 kDa). The three nanomaterials differ…

ACS Omega, 2020, pp.8137-8145. ⟨10.1021/acsomega.0c00376⟩. ⟨hal-02571960⟩

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Investigating nalidixic acid adsorption onto ferrihydrite and maghemite surfaces: molecular-level insights <i>via</i> continuous-flow ATR-FTIR spectroscopy

Ana C Schuh Frantz, Alberto Mezzetti, Ari Paavo Seitsonen, Sylvie Nelieu, Etienne Balan, Guillaume Morin, Xavier Carrier

Contaminants sequestration by iron oxides are of particular relevance in environmental chemistry and Fourier Transform Infrared (FTIR) Spectroscopy in Attenuated Total Reflectance (ATR) mode is used in this study to investigate the molecular-scale adsorption mechanism of the antibiotic nalidixic…

• Article dans une revue

Catalytic Pyrolysis of Plastics over Maghemite-Impregnated Mesocellular Foam using Induction Heating

Luing Wong Syie, Sabino Armenise, B. Nyakuma Bemgba, Soon Ng Pang, Hau Lee Chia, Anna Bogush, Franck Launay, Evgeny Rebrov, Marta Munoz

Pyrolysis is a key technology that converts unrecyclable end-of-life plastics into value-added products. Nevertheless, the high energy consumption during plastic pyrolysis limits the economic feasibility of a scaled-up process. Development of an energy-efficient plastic pyrolysis process is…

Chemical Engineering Transactions, 2022, 97, pp.25. ⟨10.3303/CET2297005⟩. ⟨hal-04030193⟩

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Boronic species as promising inhibitors of the Staphylococcus aureus NorA efflux pump: Study of 6-substituted pyridine-3-boronic acid derivatives

Fanny Fontaine, Arnaud Héquet, Anne-Sophie Voisin-Chiret, Alexandre Bouillon, Aurélien Lesnard, Thierry Cresteil, Claude Jolivalt, Sylvain Rault

In response to the extensive use of antibiotics, bacteria have evolved numerous mechanisms of defense against antimicrobial agents. Among them, extrusion of the antimicrobial agents outside the bacterial cell through efflux pumps is a major cause of concern. At first limited to one or few…

European Journal of Medicinal Chemistry, 2015, 95, pp.185-198. ⟨10.1016/j.ejmech.2015.02.056⟩. ⟨hal-01170424⟩

• Article dans une revue

l-Methionine adsorption on Cu(110), binding and geometry of the amino acid as a function of coverage

Christophe Méthivier, Vincent Humblot, Claire-Marie Pradier

The adsorption of l-methionine on Cu(110) has been characterized by combining in situ Polarization Modulation Infrared Reflection Absorption Spectroscopy (PM-IRRAS) and X-ray Photoelectron Spectroscopy (XPS). Both the chemical state of the molecule, and its anchoring points were determined at…

Applications of Surface Science, 2015, 632, pp.88-92. ⟨10.1016/j.susc.2014.09.007⟩. ⟨hal-01117667⟩