• Article dans une revue

Defect-related multicolour emissions in ZnO tetrapods: from violet, over green to yellow

Miao Zhang, Frédéric Averseng, Francia Haque, Patrizia Borghetti, Jean-Marc Krafft, Benoît Baptiste, Guylène Costentin, Slavica Stankic

The nature of defects in ZnO smoke was studied at different stages of the materials' history by combining photoluminescence (PL) and electron paramagnetic resonance (EPR) spectroscopies. In contrast to studies previously reported on ZnO nanopowders, high vacuum conditions (P < 10-5 mbar)…

Nanoscale, 2019, 11 (11), pp.5102-5115. ⟨10.1039/C8NR09998G⟩. ⟨hal-02169364⟩

• Article dans une revue

Effect of Impregnation with Ammonia vs Silica Support Textural Properties on Ni Nanoparticle Catalysts for Dry Reforming of Methane

Oscar Daoura, Nissrine El Hassan, Maya Boutros, Sandra Casale, Pascale Massiani, Franck Launay

ACS Applied Nano Materials, 2022, 5 (12), pp.18048-18059. ⟨10.1021/acsanm.2c03995⟩. ⟨hal-03987127⟩

• Article dans une revue

Hierarchical Self-Assembly of Polyoxometalate-Based Hybrids Driven by Metal Coordination and Electrostatic Interactions: From Discrete Supramolecular Species to Dense Monodisperse Nanoparticles

Guillaume Izzet, Benjamin Abécassis, Dalil Brouri, Madeleine Piot, Benjamin Matt, Stefano Artin Serapian, Carles Bo, Anna Proust

The metal-driven self-assembly processes of a covalent polyoxometalate (POM)-based hybrid bearing remote terpyridine binding sites have been investigated. In a strongly dissociating solvent, a discrete metallomacrocycle, described as a molecular triangle, is formed and characterized by 2D diffusion…

Journal of the American Chemical Society, 2016, 138 (15), pp.5093 - 5099. ⟨10.1021/jacs.6b00972⟩. ⟨hal-01548125⟩

• Article dans une revue

Elucidation of the IR of Cu and Mn substituted intraframework SiBEA zeolites

Etienne Hessou, Michael Badawi, Laetitia Valentin, Guy Atohoun, Stanislaw Dzwigaj, Monica Calatayud, Frederik Tielens

Copper and manganese modified zeolites play key roles in selective oxidation catalytic reactions. Combining Density Functional Perturbation Theory (DFPT) implemented in VASP, and infrared spectroscopy experiments, we have studied and elucidated the incorporation of Cu 2+ and Mn 2+ in the framework…

Topics in Catalysis, 2022, ⟨10.1007/s11244-022-01601-w⟩. ⟨hal-03650572⟩

• Article dans une revue

In Situ Cobalt Speciation on γ-Al 2 O 3 in the Presence of Carboxylate Ligands in Supported Catalyst Preparation

A. Davantès, C. Schlaup, X. Carrier, Mickael Rivallan, G. Lefèvre

Molecular-scale understanding of metal impregnation on a porous oxide support is a key step toward the development of optimized (and cost ,effective) catalytic materials with enhanced activity, selectivity and time on stream stability. In the present contribution in situ ATR-IR and ex situ…

Journal of Physical Chemistry C, 2017, 121 (39), pp.21461 - 21471. ⟨10.1021/acs.jpcc.7b06559⟩. ⟨hal-01651978⟩

• Article dans une revue

Proton irradiation: a key to the challenge of N-glycosidic bond formation in a prebiotic context

Raffaele Saladino, Bruno M. Bizzarri, Lorenzo Botta, Jiří Šponer, Judit E. Šponer, Thomas Georgelin, Maguy Jaber, Baptiste Rigaud, Michail Kapralov, Gennady N. Timoshenko, Alexei Rozanov, Eugene Krasavin, Anna Maria Timperio, Ernesto Di Mauro

Scientific Reports, 2017, 7 (1), ⟨10.1038/s41598-017-15392-8⟩. ⟨hal-01651973⟩

• Article dans une revue

Surface orientation dependent interaction of cobalt (II) precursors with alpha-alumina

Céline Chizallet, Christian Schlaup, Emiliano Fonda, Xavier Carrier

The performances of alumina-supported cobalt catalysts strongly depend on Co/alumina interactions, that are poorly understood. In the present work, α-alumina surfaces are used as models of polycrystalline support, to unravel their orientation dependent behavior by GI-EXAFS. The CoII/α-alumina…

Journal of Catalysis, 2021, 394, pp.157-166. ⟨10.1016/j.jcat.2020.10.025⟩. ⟨hal-03176305⟩

• Article dans une revue

Observations of fast-moving features in the debris disk of AU Mic on a three-year timescale: Confirmation and new discoveries

A. Boccaletti, E. Sezestre, A.-M. Lagrange, P. Thebault, R. Gratton, M. Langlois, C. Thalmann, M. Janson, P. Delorme, J.-C. Augereau, G. Schneider, J. Milli, C. Grady, J. H Debes, Q. Kral, J. Olofsson, J. Carson, A. Maire, T. Henning, J. Wisniewski, J. Schlieder, C. Dominik, S. Desidera, C. Ginski, D. Hines, F. Menard, D. Mouillet, N. Pawellek, A. Vigan, Erwan M Lagadec, H. Avenhaus, J.-L. Beuzit, B. Biller, M. Bonavita, M. Bonnefoy, W. Brandner, F. Cantalloube, G. Chauvin, A. Cheetham, M. Cudel, C. Gry, S. Daemgen, M. Feldt, R. Galicher, J. Girard, J. Hagelberg, P. Janin-Potiron, M. Kasper, H. Le Coroller, D. Mesa, S. Peretti, C. Perrot, M. Samland, E. Sissa, F. Wildi, A. Zurlo, S. Rochat, E. Stadler, L. Gluck, A. Origné, M. Llored, P. Baudoz, G. Rousset, P. Martinez, F Rigal

Context. The nearby and young M star AU Mic is surrounded by a debris disk in which we previously identified a series of large-scale arch-like structures that have never been seen before in any other debris disk and that move outward at high velocities.Aims. We initiated a monitoring program with…

Astronomy and Astrophysics - A&A, 2018, 614, pp.A52. ⟨10.1051/0004-6361/201732462⟩. ⟨hal-02301370⟩

• Article dans une revue

Improved Experimental Setup to Reach a Broad Frequency Domain in Local Electrochemical Impedance Spectroscopy Measurements

Maurilio Pereira Gomes, Samantha Michelle Gateman, Isolda Costa, Oumaïma Gharbi, Kieu Ngo, Jesualdo Luiz Rossi, Mireille Turmine, Vincent Vivier

We report a new experimental setup enabling local electrochemical impedance spectroscopy (LEIS) measurements over a wide frequency range, including the low frequency domain. First, an improved signal treatment was performed using a potential shifter to minimize the DC component of the measured…

Measurement - Journal of the International Measurement Confederation (IMEKO), 2022, 200, pp.111504. ⟨10.1016/j.measurement.2022.111504⟩. ⟨hal-03719357⟩

• Communication dans un congrès

CO2 methanation over NiMgAl mixed oxides: Improving their activity via an ultrasound-assisted method

Michel Obeid, Christophe Poupin, Madona Labaki, Samer Aouad, François Delattre, Eric M. Gaigneaux, Josefine Schnee, Edmond Abi-Aad

ICCDU 2023 - 20th International Conference on Carbon Dioxide Utilization, Jun 2023, Bari (IT), Italy. ⟨hal-04346547⟩