• Article dans une revue

Evidence for emission and transfer of energy from excited edge sites of MgO smokes by photoluminescence experiments.

Romain Hacquart, Jean-Marc Krafft, Guylène Costentin, Jacques Jupille

New features are observed in photoluminescence spectra of MgO smokes produced in controlled conditions, an experiment inspired by previous measurements on cleaved MgO(100). Upon photoexcitation at 5.17–5.45 eV, most luminescence spectra observed can be decomposed into two bands, peaking at 3.82–3.…

Surface Science : A Journal Devoted to the Physics and Chemistry of Interfaces, 2005, 595, pp.172-182. ⟨10.1016/j.susc.2005.08.009⟩. ⟨hal-00112145⟩

• Article dans une revue

Chemisorbed atomic oxygen inducing Pd segregation in PdAu(111) alloy: Energetic and electronic DFT analysis

Hazar Guesmi, Catherine Louis, Laurent Delannoy

Segregation energies of isolated Pd in PdAu(1 1 1) alloy are investigated by DFT calculations as a function of the oxygen coverage. Segregation of Pd is found to be oxygen-coverage dependent. While for 'clean' PdAu(1 1 1), Pd prefers to be in the bulk, in the presence of more than 1/3 ML…

Chemical Physics Letters, 2011, 503 (1-3), pp.97-100. ⟨10.1016/j.cplett.2010.12.064⟩. ⟨hal-00602939⟩

• Article dans une revue

Nickel(II) Nitrate vs. Acetate: influence of the Precursor on the Structure and Reducibility of Ni/MCM-41 and Ni/Al-MCM-41 Catalysts

Eric Marceau, Michel Che, Jiri Cejka, Arnost Zukal

Nickel(II) nitrate is the nickel precursor generally selected to prep. oxide-supported catalysts, due to its low cost, high soly. in water and decompn. at moderate temps. However, its decompn. produces NOx, and it is known to melt and redistribute over the support upon heating, leading to poorly…

ChemCatChem, 2010, 2 (4), pp.413-422. ⟨10.1002/cctc.200900289⟩. ⟨hal-00604777⟩

• Article dans une revue

Phase cycling in MQMAS sequences for half-integer quadrupole spins

Redouane Hajjar, Yannick Millot, Pascal P. Man

A review presents the anal. expressions of the first- and second-order quadrupole interactions for a static crystal, and for a crystal rotating at variable or magic angle. It also provides mathematica notebooks for calcg. the anal. expressions of existing interactions. Nested phase cycling in MQMAS…

Progress in Nuclear Magnetic Resonance Spectroscopy, 2010, 57 (3), pp.306-342. ⟨10.1016/j.pnmrs.2010.05.003⟩. ⟨hal-00604722⟩

• Article dans une revue

Probing Peptide-inorganic surface interaction at the single molecule level using force spectroscopy.

Jessem Landoulsi, Vincent Dupres

We investigate the interaction between D-Ala-D-Ala peptide and a stainless steel (SS) surface by AFM force spectroscopy with view to understand the role and nature of interfacial processes at the single molecule level. For this purpose, force-distance curves were recorded between the D-Ala-D-Ala…

ChemPhysChem, 2011, 12 (7), pp.1310-6. ⟨10.1002/cphc.201100007⟩. ⟨hal-00596388⟩

• Article dans une revue

Evidence for an H2 promoting effect in the selective catalytic reduction of NO(x) by propene on Au/Al2O3.

Tesnim Chaieb, Laurent Delannoy, Sandra Casale, Catherine Louis, Cyril Thomas

This work provides the first experimental evidence of an H2 effect in C3H6-SCR over an Au/Al2O3 catalyst. This effect could only be observed when the number of Au catalytic sites was decreased. The N2 turnover rate estimated for the first time for the Au catalytic sites for H2–C3H6-SCR was found to…

Bulgarian Chemical Communications, 2015, 51 (4), pp.796-9. ⟨10.1039/c4cc07349e⟩. ⟨hal-01121184⟩

• Article dans une revue

The Influence of TiO2 Nanoparticles Morphologies on the Performance of Lithium-Ion Batteries

Wenpo Luo, Juliette Blanchard, Yanpeng Xue, Abdelhafed Taleb

Anode materials based on the TiO2 nanoparticles of different morphologies were prepared using the hydrothermal method and characterized by various techniques, such as X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), and N2 absorption. The TiO2 nanoparticles prepared…

Nanomaterials, 2023, 13 (19), pp.2636. ⟨10.3390/nano13192636⟩. ⟨hal-04285247⟩

• Article dans une revue

A General Solution Route toward Metal Boride Nanocrystals

David Portehault, Sarala Devi, Patricia Beaunier, Christel Gervais, Cristina Giordano, Clément Sanchez, Markus Antonietti

Angewandte Chemie International Edition, 2011, 50 (14), pp.3262-3265. ⟨10.1002/anie.201006810⟩. ⟨hal-02923117⟩

• Communication dans un congrès

A microGC study of the deactivation process during conversion of methylbutynol on basic zeolites

Pascale Massiani, Jean-François Groust, Guylène Costentin, Laurent Teyssier

The initial deactivation occurring during conversion of methylbutunol on basic alkali-faujasite catalysts was studied by microGC. Both the product selectivity and the formation of water during the first minutes of run permit to conclude on the deactivation process and on the nature of the adsorbed…

Feb 2006, pp.167-172. ⟨hal-00127087⟩

• Article dans une revue

Mechanism of Metal Oxide Nanoparticle Loading in SBA-15 by the Double Solvent Technique

Juliette van Der Meer, Isabelle Bardez-Giboire, Cyrille Albert-Mercier, Bertrand Revel, Anne Davidson, Renaud Denoyel

The interaction between SBA-15 mesoporous silica, alkane solvents, and water was studied to understand the mechanism of the so-called double solvent technique. This method facilitates the loading of the pores of SBA-15 with a metal oxide precursor soln., by prewetting the SBA-15 with an alkane. In…

Journal of Physical Chemistry C, 2010, 114 (8), pp.3507-3515. ⟨10.1021/jp907002y⟩. ⟨hal-00604812⟩