Laboratoire de réactivité de surface

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  • Article dans une revue

An expeditious synthesis of early transition metal carbide nanoparticles on graphitic carbons

Debora Ressnig, Simona Moldovan, Ovidiu Ersen, Patricia Beaunier, David Portehault, Clément Sanchez, Sophie Carenco

An expeditious synthesis of metal carbide nanoparticles onto various carbon supports is demonstrated. The procedure is versatile and readily yields TiC, VC, Mo2C and W2C nanoparticles on different types of carbons. The reaction is initiated at room temperature and proceeds within seconds. This…

Chemical Communications, 2016, 52 (61), pp.9546-9549. ⟨10.1039/c6cc04157d⟩. ⟨hal-01346258v2⟩

  • Article dans une revue

One-pot prepared mesoporous silica SBA-15-like monoliths with embedded Ni particles as selective and stable catalysts for methane dry reforming

Oscar Daoura, Giulia Fornasieri, Maya Boutros, Nissrine El Hassan, Patricia Beaunier, Cyril Thomas, Mohamed Selmane, Antoine Miche, Capucine Sassoye, Ovidiu Ersen, Walid Baaziz, Pascale Massiani, Anne Bleuzen, Franck Launay

Ni@SBA-15 monoliths with up to 5 wt.% of Ni were successfully synthetized by means of an original and easy one-pot sol-gel method. Transmission Electron Microscopy (TEM), X-ray Photoelectron Spectroscopy (XPS), Temperature-Programmed Reduction (TPR), Pair Distribution Function (PDF) and X-Ray…

Applied Catalysis B: Environmental, 2021, 280, pp.119417. ⟨10.1016/j.apcatb.2020.119417⟩. ⟨hal-02991760⟩

  • Thèse

Gold surface nanostructuring for separation and sensing of biomolecules, Nanostructuration des surfaces d'or pour la séparation et la détection de biomolécules

Erin Bedford

Detecting biomolecules in physiological environments is critical to health care and environmental monitoring. In this work, we study and use gold surfaces for biomolecule detection while incorporating nanoscale components—specifically, self-assembled monolayers (SAMs) of alkanethiols and gold…, La détection de molécules biologiques dans les environnements physiologiques est essentielle aux soins de santé et la surveillance de l'environnement. Dans ces travaux de thèse, nous étudions et utilisons des surfaces d'or pour la détection de biomolécules, avec l'inclusion de…

Chemical Physics [physics.chem-ph]. Université Pierre et Marie Curie - Paris VI; University of Waterloo (Canada), 2016. English. ⟨NNT : 2016PA066527⟩. ⟨tel-01529577⟩

  • Article dans une revue

The controlled synthesis of metal-acid bifunctional catalysts: The effect of metal:acid ratio and metal-acid proximity in Pt silica-alumina catalysts for n-heptane isomerization

Jadid E Samad, Juliette R Blanchard, Celine R Sayag, Catherine R Louis, John R Regalbuto

Several series of metal-acid bifunctional catalysts with controlled metal:acid ratios and metal site-acid site proximity were evaluated for n-heptane isomerization. Through the study of metal deposition reported in the companion paper, proximity could be achieved at four distinct scales: atomic,…

Chinese Journal of Catalysis, 2016, 342, pp.203 - 212. ⟨10.1016/j.jcat.2016.08.004⟩. ⟨hal-01443956⟩

  • Article dans une revue

Insights into the WOx Coverage-Dependent Location and Oxidation State of Noble Metals Supported on Tungstated Oxides: The Case of Rh/WOx−Ce0.62Zr0.38O2

Thomas Bonnotte, Rachel P. Doherty, Céline Sayag, Jean-Marc Krafft, Christophe Méthivier, Mickaël Sicard, Frédéric Ser, Cyril Thomas

Noble metals-promoted tungstated oxides have been shown to be profitable in a wide variety of catalytic reactions of environmental interest but to be detrimental in the hydrogenation of aromatics. The origin of the deleterious effect of tungstates on the hydrogenation performance of noble metals is…

Journal of Physical Chemistry C, 2014, 118, pp.7386−7397. ⟨10.1021/jp410848f⟩. ⟨hal-00979525⟩

  • Article dans une revue

Baicalein-modified hydroxyapatite nanoparticles and coatings with antibacterial and antioxidant properties

Estelle Palierse, Christophe Hélary, Jean-Marc Krafft, Isabelle Génois, Sylvie Masse, Guillaume Laurent, Maria I Alvarez Echazu, Mohamed Selmane, Sandra Casale, Laetitia Valentin, Antoine Miche, Ben C.L. Chan, Clara B.S. Lau, Margaret Ip, Martin F Desimone, Thibaud Coradin, Claude Jolivalt

Aseptic loosening and bacterial infections are the two main causes of failure for metallic implants used for joint replacement. A coating that is both bioactive and possesses antimicrobial properties may address such shortcomings and improve the performance of the implant. We have sought to study…

Materials Science and Engineering: C, 2021, 118, pp.111537, 1-13. ⟨10.1016/j.msec.2020.111537⟩. ⟨hal-02946075⟩

  • Article dans une revue

Pseudoaneurysm of anterior tibial artery following a diaphyseal fracture ă of the tibia mimicking a malignant bone tumor

Pierre Sautet, Elie Choufani, Philippe Petit, Franck Launay, Jean-Luc Jouve, Sebastien Pesenti

Pseudoaneurysms of the lower limb are rare and frequently iatrogenics ă complications. Closed traumas are likely to generate lesions of the ă arterial wall, which generally become symptomatic at a later stage. The ă diagnosis of such vascular lesion is difficult because the ă symptomatology and the…

Archives of Orthopaedic and Trauma Surgery, 2016, 136 (9), pp.1247-1250. ⟨10.1007/s00402-016-2525-6⟩. ⟨hal-01482636⟩

  • Article dans une revue

Anatase titania activated by Cu(II) or Zn(II) nanoparticles for the photooxidation of methanol assisted by Rhodamine-B

Wissame Chettah, Siham Barama, Mohamed-Salah Medjram, Mohamed Selmane, David Montero, Anne Davidson, Jacques C. Védrine

This paper deals with the photocatalytic reactivity of anatase titania particles, modified by surface deposition of Cu[See texte] and Zn[See texte]oxide/hydroxide nanoparticles which are detected by EDS and FX techniques. The objective of the preparation steps was chosen to avoid the formation of…

Materials Chemistry and Physics, 2021, 257, pp.123714 -. ⟨10.1016/j.matchemphys.2020.123714⟩. ⟨hal-03491407⟩

  • Article dans une revue

Fluorescent silica MCM-41 nanoparticles based on flavonoids: Direct post-doping encapsulation and spectral characterization

Anton Landström, Silvia Leccese, Hagop Abadian, Jean-François Lambert, Isabella Concina, Stefano Protti, Ari Paavo Seitsonen, Alberto Mezzetti

Flavones and flavonols are naturally-occurring organic molecules with interesting biological, chemical and photophysical properties. In recent years their interaction with silica surfaces has received increasing attention. In this work, the flavonol 3-hydroxyflavone (3HF) and the flavone 7-…

Dyes and Pigments, 2021, 185, pp.108870 -. ⟨10.1016/j.dyepig.2020.108870⟩. ⟨hal-03493406⟩

  • Article dans une revue

Enzyme Immobilization on Silane-Modified Surface through Short Linkers: Fate of Interfacial Phases and Impact on Catalytic Activity

Nesrine Aissaoui, Latifa Bergaoui, Souhir Boujday, Jean-François Lambert, Christophe Méthivier, Jessem Landoulsi

We investigated the mechanism of enzyme immobilization on silanized surfaces through coupling agents (cross-linkers) in order to understand the role of these molecules on interfacial processes and their effect on catalytic activity. To this end, we used a model multimeric enzyme (G6PDH) and several…

Langmuir, 2014, 30 (14), pp.4066-77. ⟨10.1021/la404935q⟩. ⟨hal-01121650⟩