• Article dans une revue

Inelastic light scattering by long narrow gold nanocrystals: when size, shape, crystallinity and assembly matter

Hervé Portalès, Nicolas Goubet, Sandra Casale, Xiang Zhen Xu, Mostapha Ariane, Alain Mermet, Jeremie Margueritat, Lucien Saviot

We report the synthesis of long narrow gold nanocrystals and the study of their vibrational dynamics using inelastic light scattering measurements. Rich experimental spectra are obtained for monodomain gold nanorods and pentagonal twinned bipyramids. Their assignment involves diameter-dependent non…

ACS Nano, 2020, 14 (4), pp.4395-4404. ⟨10.1021/acsnano.9b09993⟩. ⟨hal-02566470⟩

• Article dans une revue

Stability and degradation of PEO₂₀PPO₇₀PEO₂₀ triblock copolymers in mesostructured silica

Brindusa Dragoi, Guillaume Laurent, Sandra Casale, Taissire Benamor, Bénédicte Lebeau, Cédric Boissière, François Ribot, Mohamed Selmane, Patrick Schmidt, David Kreher, Anne Davidson

Organic−inorganic hybrid mesostructured silicas are prepared, without stirring (at pH = 0.0) and with stirring (at pH = 0.6) to obtain isolated and gyroidal-like attached silica grains with incorporated triblock P123 poly (ethylene oxide)-poly (propylene oxide)–poly (ethylene oxide) copolymers.…

• Article dans une revue

Versatile Molten Salt Synthesis of Manganite Perovskite Oxide Nanocrystals and Their Magnetic Properties

Francisco Gonell, Naoual Alem, Peter Dunne, Guillaume Crochet,   Patricia Beaunier, Christophe Méthivier, David Montero, Christel Laberty, Bernard Doudin, David Portehault

Manganite perovskite oxides exhibit a wide range of properties relevant for catalysis, energy conversion and spintronics. Such behaviors can be deeply modified at the nanoscale where confinement and surface effects may prevail. Interesting properties could then emerge from manganite perovskite…

ChemNanoMat, 2019, 5 (3), pp.358-363. ⟨10.1002/cnma.201800632⟩. ⟨hal-02168943⟩

• Communication dans un congrès

Nanocasting, SBA-15 silicas as solid templates for the fabrication of oxide nanoparticles

Anne Davidson, Marianne Imperor-Clerc, Dominique Bazin, Vincent Dupuis, Regine Perzynski, Virginie Escax

229th ACS National Meeting, Symposium Colloids, Mar 2005, San Diego, United States. ⟨hal-00172345⟩

• Communication dans un congrès

Nanocastings" : silices nanoporeuses SBA en tant que moules pour obtenir des nano-objets (particules-fils) d'oxydes des métaux de transition

Marianne Imperor-Clerc, Dominique Bazin, Vincent Dupuis, Regine Perzynski, Virginie Escax, Anne Davidson

Colloque nanohybrides2 (GDR 2486), Jun 2005, Autrans, France. ⟨hal-00172347⟩

• Article dans une revue

Selectivities in Adsorption and Peptidic Condensation in the (Arginine and Glutamic Acid)/Montmorillonite Clay System

Maguy Jaber, Thomas Georgelin, Houssein Bazzi, France Costa-Torro, Jean-François Lambert, Gérard Bolbach, Gilles Clodic

The present study examines the selective adsorption and polymerization of two amino acids, glutamic acid (Glu) and arginine (Arg), on a cationic clay mineral, montmorillonite (Mt). Two experimental procedures were used: selective adsorption and wet impregnation. In the first case, an adsorption…

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 2014, 118 (44), pp.25447-25455. ⟨10.1021/jp507335e⟩. ⟨hal-01121644⟩

• 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

Influence of Dealumination by Acetylacetone on Acidity and Activity of Amorphous Silica-Aluminas

Xiaojing Jin, Yannick Millot, Céline Sayag, Juliette Blanchard, Pascal Ping Man

The influence of dealumination of two commercial amorphous silica-aluminas (ASAs) with acetylacetone on their textural properties, acidity and catalytic activity was studied by N2-sorption, NH3-TPD, FTIR of adsorbed pyridine as well as 1 H and 27 Al MAS NMR. Acetylacetone treatment increases the…

ChemistrySelect, 2020, 5 (8), pp.2489-2495. ⟨10.1002/slct.201904712⟩. ⟨hal-02919070⟩

• Article dans une revue

Polyol-mediated syntheses of crystalline nanosized manganese oxides

Guiqiang Diao, François Chau, Jean-Yves Piquemal, Emmanuel Briot, Souad Ammar, Mickaël Sicard, Sophie Nowak, Patricia Beaunier, Hélène Lecoq, P. Decorse, Lin Yu

Potassium-type birnessite and lithium-containing manganese oxides were prepared by the polyol process. The Mn(III)/Mn(IV) mixed-valencies compounds are obtained through the controlled reduction of potassium permanganate in a basic water–diethylene glycol mixture at moderate temperature and very…

Journal of Nanoparticle Research, 2014, 16 (6), pp.2428. ⟨10.1007/s11051-014-2428-9⟩. ⟨hal-01117188⟩

• Article dans une revue

Direct d-Glucose Oxidation over Noble Metal Nanoparticles Introduced on Polymer and Inorganic Supports

Valentina Matveeva, Alexey Bykov, Valentin Doluda, Mikhail Sulman, Narendra Kumar, Stanislaw Dzwigaj, E. Marceau, Leonid Kustov, Olga Tkachenko, Esther Sulman

Topics in Catalysis, 2009, 52 (4), pp.387-393. ⟨10.1007/s11244-008-9171-3⟩. ⟨hal-03032168⟩