Laboratoire de réactivité de surface

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  • Article dans une revue

Sulfidation of CoMoP catalysts: Genesis of the Mo multiscale organization from oxides to sulfides

Candice Cottrez, Severine Humbert, Anne-Sophie Gay, Elodie Devers, Frédéric De Geuser, Christèle Legens, Xavier Carrier, Alexandra Chaumonnot

MoS<sub>2</sub> active phase found in CoMoP/Al<sub>2</sub>O<sub>3</sub> catalysts can be described as a multiscale Mo organization with MoS<sub>2</sub> slabs and slab aggregates. The aim of this paper is to understand how such multiscale organization…

ChemCatChem, 2025, 17 (7), pp.e202401670. ⟨10.1002/cctc.202401670⟩. ⟨hal-04934549v3⟩

  • 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

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⟩

  • Article dans une revue

Recent advances in aptasensors based on graphene and graphene-like nanomaterials

Jianfeng Ping, Yubin Zhou, Yuanyuan Wu, Vladislav Papper, Souhir Boujday, Robert S. Marks, Terry W.J. Steele

Graphene and graphene-like two-dimensional nanomaterials have aroused tremendous research interest in recent years due to their unique electronic, optical, and mechanical properties associated with their planar structure. Aptamers have exhibited many advantages as molecular recognition elements for…

Biosensors and Bioelectronics, 2015, 64, pp.373-385. ⟨10.1016/j.bios.2014.08.090⟩. ⟨hal-01132984⟩

  • Article dans une revue

Surface IR immunosensors for label-free detection of benzo[a]pyrene

Souhir Boujday, Soumaya Nasri, Michele Salmain, Claire-Marie Pradier

Polycyclic aromatic hydrocarbons (PAHs) are a family of contaminants originating from the incomplete combustion of organic compounds, present in the urban air, water, soil and also foodstuff. Due to their recognised carcinogenicity, their concentration in urban air is routinely monitored and…

Biosensors & bioelectronics, 2010, 26 (4), pp.1750-1754. ⟨10.1016/j.bios.2010.08.031⟩. ⟨hal-00604705⟩

  • Article dans une revue

Smartphone-assisted plasmonic biosensors for rapid on-site detection of foodborne pathogens and allergens

Walid Ait Mammar, Axel Wilson, Antoine Miche, Thomas Kuntzel, Michèle Salmain, Souhir Boujday

We report the design of a smartphone-assisted plasmonic immunosensor and its application to the detection of several food contaminants, namely staphylococcal enterotoxin A (SEA), bovine β-lactoglobulin (BLG), and hen egg white lysozyme (LYSO). Comprehensive characterization of antibodies was…

Talanta, 2025, 291, pp.127864. ⟨10.1016/j.talanta.2025.127864⟩. ⟨hal-04977805⟩

  • Article dans une revue

Spiky gold shells on magnetic particles for DNA biosensors

Erin Bedford, Souhir Boujday, Claire-Marie Pradier, Frank Gu

Combined separation and detection of biomolecules has the potential to speed up and improve the sensitivity of disease detection, environmental testing, and biomolecular analysis. In this work, we synthesized magnetic particles coated with spiky nanostructured gold shells and used them to…

Talanta, 2018, 182, pp.259 - 266. ⟨10.1016/j.talanta.2018.01.094⟩. ⟨hal-01777933⟩

  • Article dans une revue

A fullerene helical peptide: synthesis, characterization and formation of self-assembled monolayers on gold surfaces

Houssein Nasrallah, Jad Rabah, Van Bui-Thi-Tuyet, Krystyna Baczko, Hélène Fensterbank, Flavien Bourdreux, Anne-Marie Goncalves, Valérie Declerck, Souhir Boujday, Vincent Humblot, Karen Wright, Anne Vallée, Emmanuel Allard

The synthesis of a C60-peptide using "clickable" fullerene and peptide derivatives is described. The peptide is composed of a repeating sequence of -aminoisobutyric acid (Aib) and two L-Alanine (Ala) residues, promoting the formation of a helical conformation, which has been confirmed by…

New Journal of Chemistry, 2018, 42 (24), pp.19423-19432. ⟨10.1039/c8nj04599b⟩. ⟨hal-02348881⟩