Laboratoire de réactivité de surface

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  • Article dans une revue

Monitoring by in situ neutron diffraction of simultaneous dehydration and Ni2+ mobility in partially exchanged NaY zeolites

Florence Porcher, Jean-Louis Paillaud, Lucia Gaberova, Gilles André, Sandra Casale, Pascale Massiani

Powder neutron diffraction is used to follow structural changes occurring during heat and vacuum assisted dehydration of 3 wt% nickel exchanged NaY. The structures determined from Rietveld refinement confirm the nickel ion displacement from the supercages and sodalite cages towards hexagonal prisms…

Monitoring by in situ neutron diffraction of simultaneous dehydration and Ni2+ mobility in partially exchanged NaY zeolites . New Journal of Chemistry, 2016, 40, pp.4228-4235 ⟨10.1039/c5nj02918j⟩. ⟨hal-01263845⟩

  • Article dans une revue

Embedding Collagen in Multilayers for Enzyme-Assisted Mineralization: A Promising Way to Direct Crystallization in Confinement

Elodie Colaço, Clément Guibert, Jihye Lee, Emmanuel Maisonhaute, Dalil Brouri, Christine Dupont-Gillain, Karim El Kirat, Sophie Demoustier-Champagne, Jessem Landoulsi

The biogenic calcium phosphate (CaP) crystallization is a process that offers elegant materials design strategies to achieve bioactive and biomechanical challenges. Indeed, many biomimetic approaches have been developed for this process in order to produce mineralized structures with controlled…

Biomacromolecules, 2021, 22, pp.3460-3473. ⟨10.1021/acs.biomac.1c00565⟩. ⟨hal-03292108⟩

  • Article dans une revue

Biocidal Properties of a Glycosylated Surface: Sophorolipids on Au(111)

Claire Valotteau, Christophe Calers, Sandra Casale, Jan Berton, Christian V. Stevens, Florence Babonneau, Claire-Marie Pradier, Vincent Humblot, Niki Baccile

Classical antibacterial surfaces usually involve antiadhesive and/or biocidal strategies. Glycosylated surfaces are usually used to prevent biofilm formation via antiadhesive mechanisms. We report here the first example of a glycosylated surface with biocidal properties created by the covalent…

ACS Applied Materials & Interfaces, 2015, 7 (32), pp.18086-18095. ⟨10.1021/acsami.5b05090⟩. ⟨hal-01275050⟩

  • Article dans une revue

Influence of Magnesium Substitution on the Basic Properties of Hydroxyapatites

Sarah Diallo-Garcia, Danielle Laurencin, Jean-Marc Krafft, Sandra Casale, Mark E. Smith, Hélène Pernot, Guylène Costentin

Magnesium-substituted hydroxyapatites (HAP) have been prepared to evaluate the influence of cationic substitution on the surface basic properties of HAP. Despite successful introduction of some of the magnesium cations into the HAP structure (as evidenced by XRD, infrared, and Raman), no influence of…

Journal of Physical Chemistry C, 2011, 115, pp.24317-24327. ⟨10.1021/jp209316k⟩. ⟨hal-00653862⟩

  • Article dans une revue

Layer-by-Layer Assembly of Nanosized Membrane Fractions for the Assessment of Cytochrome P450 Xenobiotic Metabolism

Paul Quantin, Elodie Colaço, Karim El Kirat, Christophe Egles, Hervé Ficheux, Jessem Landoulsi

Herein, we report the use of sequential layer-by-layer (LbL) assembly to design nanostructured films made of recombinant bacterial membrane fractions (MF), which overexpress cytochrome P450 (CYP) and cytochrome P450 reductase. The ability to incorporate MF in LbL multilayered films is demonstrated…

ACS Omega, 2018, 3 (10), pp.12535 - 12544. ⟨10.1021/acsomega.8b01738⟩. ⟨hal-01934732⟩

  • Article dans une revue

Investigation of new routes for the preparation of mesoporous calcium oxide supported nickel materials used as catalysts for methane dry reforming reaction

Ola El Samrout, Leila Karam, Karam Jabbour, Pascale Massiani, Franck Launay, Nissrine El Hassan

Nowadays, one of the metal oxides attracting significant attention in catalysis is calcium oxide (CaO) because it is cheap, environmentally friendly and characterized by a strong basic character. These distinctive properties make CaO promising in a wide range of industrial applications such as…

Catalysis Science & Technology, 2020, ⟨10.1039/d0cy01219j⟩. ⟨hal-02925692⟩

  • Article dans une revue

Zeolite and Silica-based CO2 Adsorbents

Guillaume Laugel, Rogéria Bingre, Benoît Louis

The ever-increasing CO2 concentration in the atmosphere leading to global warming is one of the main problems that mankind has to face in the 21st century. To avoid the fact that sooner or later humanity will directly start to suffer from it, there is an urgent need to reduce the CO2 level by…

Applied Catalysis B: Environmental, 2018, 253, pp.76-152. ⟨10.1039/9781788013352-00076⟩. ⟨hal-04020525⟩

  • Article dans une revue

Pulsed field gradient NMR studies of n-hexane diffusion in MCM-41 materials

Ziad Adem, Flavien Guenneau, Marie-Anne Springuel-Huet, Juliette Blanchard, Antoine Gedeon

The knowledge of transport properties in heterogeneous catalysis is of important interest since the selectivity and the activity depend significantly on diffusion. Pulsed Field Gradient (PFG) NMR has proved to be a valuable tool to probe the intracrystalline diffusion of molecules adsorbed in…

Studies in Surface Science and Catalysis, 2006, XX, pp.XXX. ⟨hal-00112009⟩

  • Article dans une revue

Incorporation of Silver Atoms into the Vacant T-Atom Sites of the Framework of SiBEA Zeolite as Mononuclear Ag(I) Evidenced by XRD, FTIR, NMR, DR UV-vis, XPS, and TPR

Stanislaw Dzwigaj, Yannick Millot, Jean-Marc Krafft, Nataliia Popovych, Pavlo Kyriienko

An AgSiBEA zeolite has been prepared by a two-step postsynthesis procedure that consists of first creating the vacant T atom sites with associated silanol groups by treatment of TEABEA zeolite with nitric acid and then impregnating of resulting SiBEA zeolite with an aqueous solution of AgNO3. The…

Journal of Physical Chemistry C, 2013, 117 (24), pp.12552-12559. ⟨10.1021/jp401849e⟩. ⟨hal-00907647⟩

  • Article dans une revue

Organo-NOx formation-decomposition as the origin of the changes in the low temperature NO-TPD profile in the presence of n-decane on Ag/γ-Al2O3

Kinga Malinger, Juliette Blanchard, Rachel P. Doherty, Cyril Thomas

The NOx desorption profiles obtained in O2-He and n-C10-O2-He were compared on γ-Al2O3 and Ag/γ-Al2O3. On Ag/γ-Al2O3, the low-temperature NOx desorption profiles obtained in n-C10-O2-He were significantly different from those obtained in O2-He. In particular, at 190-220 °C excess release of NO,…

Catalysis Communications, 2014, 46, pp.81-85. ⟨10.1016/j.catcom.2013.11.017⟩. ⟨hal-00982268⟩