• Article dans une revue

Photocatalytic Hydrogen Evolution Using Ni–Pd/TiO 2 : Correlation of Light Absorption, Charge-Carrier Dynamics, and Quantum Efficiency

Ana Luna, Diana Dragoe, Kunlei Wang, Patricia Beaunier, Ewa Kowalska, Bunsho Ohtani, Daniel Bahena Uribe, Miguel A. Valenzuela, Hynd Remita, Christophe Colbeau-Justin

TiO2 surface modification with bimetallic nano particles (NPs) has demonstrated to be a strategy to enhance the hydrogen generation via photocatalysis and to minimize the use of expensive noble metals. A better understanding of the role of bimetallic NPs is of crucial importance to design efficient…

Journal of Physical Chemistry C, 2017, 121 (26), pp.14302 - 14311. ⟨10.1021/acs.jpcc.7b01167⟩. ⟨hal-01652005⟩

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Relevant parameters for obtaining high-surface area materials by delamination of magadiite, a layered sodium silicate

Yunfei Bi, Jean-François Lambert, Yannick Millot, Sandra Casale, Juliette Blanchard, Shuangqin Zeng, Hong Nie, Dadong Li

Layered silicates can be used for the preparation of high surface area materials by intercalation with organic cations followed by ultrasonication. The relevant parameters for delamination (exfoliation) of cetyltrimethylammonium bromide exchange magadiite are investigated. Using a magadiite wet…

Journal of Materials Chemistry, 2011, 21, pp.18403-18411. ⟨10.1039/C1JM13108G⟩. ⟨hal-00668932⟩

• Article dans une revue

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⟩

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The catalytic activity of Fe-containing SiBEA zeolites in Fischer–Tropsch synthesis

Karolina A. Chalupka, Waldemar Maniukiewicz, Pawel Mierczynski, Tomasz Maniecki, Jacek Rynkowski, Stanislaw Dzwigaj

tThis work is focused on catalytic activity of Red-C-FexSiBEA zeolites in Fischer–Tropsch synthesis. TheFe-containing zeolites were obtained by two-step post-synthesis method, which allowed incorporatingthe metal ions into zeolite framework and in this way to obtain materials with new…

Catalysis Today, 2015, 257, pp.117-121. ⟨10.1016/j.cattod.2015.02.017⟩. ⟨hal-01226533⟩

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Al-Mn-silicate nanobubbles phase as an intermediate in zeolite formation

Amal Bejar, Semy Ben Chaabene, Maguy Jaber, Jean-François Lambert, Latifa Bergaoui

Manganese (II) carbonate, silicic acid and aluminum nitrate were treated hydrothermally at different temperatures (120–210°C) and for different durations (6–72 h) in an aqueous basic medium. Different compositions of starting mixtures were used. The synthetized materials were characterized by…

Applied Clay Science, 2016, 123, pp.202 - 209. ⟨10.1016/j.clay.2016.01.025⟩. ⟨hal-01548120⟩

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Self-Assembly of Fatty Acids on Hydroxylated Al Surface and Effects of Their Stability on Wettability and Nanoscale Organization

Irma Liascukiene, Marie Steffenhagen, Svajus J. Asadauskas, Jean-François Lambert, Jessem Landoulsi

The self-assembly of fatty acids (FA) on the surfaces of inorganic materials is a relevant way to control their wetting properties. While the mechanism of adsorption on model flat substrate is well described in the literature, interfacial processes remain poorly documented on nanostructured…

Langmuir, 2014, 30 (20), pp.5797-5807. ⟨10.1021/la404756y⟩. ⟨hal-01121646⟩

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Selective Hydrogenation of 1,3-Butadiene in the Presence of an Excess of Alkenes over Supported Bimetallic Gold-Palladium Catalysts

Antoine Hugon, Laurent Delannoy, Jean-Marc Krafft, Catherine Louis

Supported Au catalysts modified by the addition of low amount of Pd (Au/Pd atomic ratio >= 10), prepared by either codeposition-precipitation (DP) or coimpregnation in excess of solution (IES), result in the formation of bimetallic Au Pd particles that promote the selective hydrogenation of…

Journal of Physical Chemistry C, 2010, 114 (24), pp.10823-10835. ⟨10.1021/jp100479b⟩. ⟨hal-00604724⟩

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Characterization of new bimetallic oxycarbide (MoWC0.5O0.6) for bifunctional isomerization of n-heptane

Claude Potvin, Anne-Félicie Lamic Chae-Ho Shin Gérald Djaga-Maridassou Claude Potvin

Catalysis Letters, 2006, 107, pp.89. ⟨hal-00022218⟩

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Investigation of ion-selective electrodes with neutral ionophores and ionic sites by EIS. II. Application to K+ detection

Claude Gabrielli, Patrick Hemery, Pierre Letellier, Michele Masure, Hubert Perrot, Marie-Isabelle Rahmi, Mireille Turmine

The impedance of an ion-selective electrode (ISE) to potassium with valinomycin as the ionophore and KBΦ4 as the ionic sites was measured. The membrane was made of PVC with DNP as a plasticizer. The influence of the content of the plasticizer and the membrane thickness was investigated. The…

Journal of Electroanalytical Chemistry, 2004, 570 (2), pp.291-304. ⟨10.1016/j.jelechem.2004.04.007⟩. ⟨hal-04197746⟩

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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⟩