• Article dans une revue

Evaluation and application of a new scintillator‐based heat‐resistant back‐scattered electron detector during heat treatment in the scanning electron microscope

Renaud Podor, J. Mendonça, J. Lautru, H.P. Brau, D. Nogues, A. Candeias, P. Horodysky, A. Kolouch, M. Barreau, X. Carrier, N. Ramenatte, S. Mathieu, M. Vilasi

A new high-temperature detector dedicated to the collection of backscattered electrons is used in combination with heating stages up to 1050°C, in high-vacuum and low-vacuum modes in order to evaluate its possibilities through signal-to-noise ration measurements and different applications. Four…

Journal of Microscopy, 2021, 282 (1), pp.45-59. ⟨10.1111/jmi.12979⟩. ⟨hal-03336998⟩

• Article dans une revue

Factors impacting the aggregation/agglomeration and photocatalytic activity of highly crystalline spheroid- and rod-shaped TiO 2 nanoparticles in aqueous solutions

Thomas Degabriel, Elodie Colaço, Rute F Domingos, Karim El Kirat, Dalil Brouri, Sandra Casale, Jessem Landoulsi, Jolanda Spadavecchia

We investigate the characteristics, fate and photocatalytic activity of spheroid- and rod-shaped TiO2 nano-crystals in aqueous solutions to better understand their behaviour in media of biological and environmental interest. For this purpose, the potential of a solvothermal method in synthesizing…

Physical Chemistry Chemical Physics, 2018, 20 (18), pp.12898 - 12907. ⟨10.1039/C7CP08054A⟩. ⟨hal-01803715⟩

• Thèse

Influence de l'incorporation du vanadium dans l'hydroxyapatite sur la réaction d'oxydation déshydrogénante du propane, Influence of the incorporation of vanadium in hydroxyapatite on the oxidative dehydrogenation of propane reaction

Sarah Petit

Dans l'objectif de combler le gap entre l'offre et la demande en propène, la réaction d'oxydation déshydrogénante du propane (ODHP) est une solution alternative à la réaction de déshydrogénation directe. Les hydroxyapatites (HAp) modifiées au vanadium sont des matériaux bi-…, In order to fill the gap between propene supply and demand, the oxidative dehydrogenation of propane (ODHP) is an alternative solution to the direct dehydrogenation process. Vanadium-modified hydroxyapatites (HAp) are bifunctional catalysts combining acid-base and redox properties which were shown…

Matériaux. Université Pierre et Marie Curie - Paris VI, 2017. Français. ⟨NNT : 2017PA066620⟩. ⟨tel-02354902⟩

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A Molecular Picture of the Adsorption of Glycine in Mesoporous Silica through NMR Experiments Combined with DFT‑D Calculations

Nicolas Folliet, Christel Gervais, Dominique Costa, Guillaume Laurent, Florence Babonneau, Lorenzo Stievano, Jean-François Lambert, Frederik Tielens

The adsorption behavior of the amino acid glycine in mesoporous silica has been investigated using a combination of quantum chemical calculations and NMR spectroscopy experiments. Glycine adsorption on two representative sites of an amorphous silica surface, vicinal silanols and a silanol nest, was…

Journal of Physical Chemistry C, 2013, 117, pp.4104-4114. ⟨10.1021/jp312195a⟩. ⟨hal-00797997⟩

• Article dans une revue

Conducting polymer nanofibers with controlled diameters synthesized in hexagonal mesophases

Srabanti Ghosh, Laurence Ramos, Samy Remita, Alexandre Dazzi, Ariane Deniset-Besseau, Patricia Beaunier, Fabrice Goubard, Pierre-Henri Aubert, Hynd Remita

Oil-swollen hexagonal mesophases resulting from the surfactant mediated self-assembly of a quaternary mixture of water, surfactant, co-surfactant, and oil, are versatile templates to synthesize anisotropic nanomaterials. Poly(diphenylbutadyine) (PDPB) polymer nanofibrous network structures were…

• Article dans une revue

Control of calcium accessibility over hydroxyapatite by post-precipitation steps: influence on the catalytic reactivity toward alcohols

Manel Ben Osman, Sarah Diallo Garcia, Jean-Marc Krafft, Christophe Methivier, Juliette Blanchard, Tetsuya Yoshioka, Jun Kubo, Guylène Costentin

Hydroxyapatites are increasingly used as heterogeneous catalysts since they present atypical behaviours for many acid base reactions. The aim of this study was to discuss the possible involvement of Ca2+ Lewis and/or PO–H Brønsted acid sites belonging to the hydroxyapatite system in the conversion…

Physical Chemistry Chemical Physics, 2016, ⟨10.1039/C6CP05294K⟩. ⟨hal-01378475⟩

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Influence of the swelling agents of siliceous mesocellular foams on the performances of Ni-based methane dry reforming catalysts

Oscar Daoura, Sarah Daher, Marie-Nour Kaydouh, Nissrine El Hassan, Pascale Massiani, Franck Launay, Maya Boutros

International Journal of Hydrogen Energy, 2018, 43 (36), pp.17205-17215. ⟨10.1016/j.ijhydene.2018.07.123⟩. ⟨hal-02414800⟩

• Article dans une revue

Surface plasmon resonance: signal amplification using colloidal gold nanoparticles for enhanced sensitivity

Sabine Szunerits, Jolanda Spadavecchia, Rabah Boukherroub

Among all the detection methods developed for bioassays, optical-based approaches are the most popular techniques. A widely used and accepted bioanalytical technique for routine characterization of molecular recognition events at a solid interface is surface plasmon resonance (SPR) spectroscopy.…

Critical Reviews in Analytical Chemistry, 2014, 33, pp.153-164. ⟨10.1515/revac-2014-0011⟩. ⟨hal-01071317⟩

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Adsorption of a chiral modifier on an oxide surface: Chemical nature of tartaric acid on rutile TiO2 (110)

E. Meriggio, R. Lazzari, S. Chenot, P. David, C. Methivier, X. Carrier, G. Cabailh, V. Humblot

Tartaric acid (TA) is one of the most known chiral modifier used in heterogeneous enantioselective catalysis and understanding how it interacts with oxide supports is of significant importance for the design of efficient supported metal catalysts. This work presents a detailed surface science…

Applied Surface Science, 2019, 493, pp.1134-1141. ⟨10.1016/j.apsusc.2019.07.143⟩. ⟨hal-02340234⟩

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Characterization and catalytic activity of Mn (salen) immobilized on silica by various strategies

Khalil Tesnime Abou, Chaaben Semy Ben, Boujday Souhir, Bergaoui Latifa

Different strategies were applied to prepare supported Mn(salen) on fumed silica and to explore the effect of the interaction nature between the active sites and the surface on the catalytic activity. Direct and multistep grafting methods were used: the silica surface was silylated and the metal…

IOSR Journal of Applied Chemistry, 2015, 8, pp.36-45. ⟨10.9790/5736-08113645⟩. ⟨hal-01133157⟩