Laboratoire de réactivité de surface

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  • Article dans une revue

Low Temperature NOx Adsorption Study on Pd-Promoted Zeolites

Alessandro Porta, Tommaso Pellegrinelli, Lidia Castoldi, Roberto Matarrese, Sara Morandi, Stanislaw Dzwigaj, Luca Lietti

In this study Pd-promoted zeolites (BEA, FER, MFI and MOR) are synthesized and investigated for potential use in the low-temperature NOx adsorption. The catalysts are characterized by BET, XRD, UV–Vis and XRF, while the adsorption/desorption characteristics of the samples are investigated by NOx…

Topics in Catalysis, 2018, 61 (18-19), pp.2021-2034. ⟨10.1007/s11244-018-1045-8⟩. ⟨hal-03993564⟩

  • Article dans une revue

Hybrid phase 1T/2H-MoS 2 with controllable 1T concentration and its promoted hydrogen evolution reaction

Yuxiao Zhang, Yasutaka Kuwahara, Kohsuke Mori, Catherine Louis, Hiromi Yamashita

1T concentration controllable 1T/2H-MoS 2 with enhanced electrochemical hydrogen evolution reaction performance has been synthesized.

Nanoscale, 2020, 12 (22), pp.11908-11915. ⟨10.1039/D0NR02525A⟩. ⟨hal-03995334⟩

  • Article dans une revue

Properties, fabrication and applications of plasmonic semiconductor nanocrystals

Haibo Yin, Yasutaka Kuwahara, Kohsuke Mori, Catherine Louis, Hiromi Yamashita

We highlight three widely explored oxide-based plasmonic materials, including H x MoO 3−y , H x WO 3−y , and Mo x W 1−x O 3−y , and their applications in catalysis.

Catalysis Science & Technology, 2020, 10 (13), pp.4141-4163. ⟨10.1039/c9cy02511a⟩. ⟨hal-03995338⟩

  • Article dans une revue

Polyethylene glycol Gold-Nanoparticles: Facile Nanostructuration of Doxorubicin and its complex with DNA molecules for SERS detection

Jolanda Spadavecchia, Ramesh Perumal, Sandra Casale, Jean-Marc Krafft, Christophe Methivier, Claire-Marie Pradier

We report the synthesis of dicarboxylic acid-terminated polyethylene-glycol (PEG)-gold nanoparticles by a simple one-step method, and their further use to form nanostructured surfaces for biomolecule immobilization. The synthesized nano-scale particles were conjugated with probe/target…

Chemical Physics Letters, 2016, 648, pp.182-188. ⟨10.1016/j.cplett.2015.08.038⟩. ⟨hal-01196383⟩

  • Article dans une revue

New route toward nanosized crystalline metal borides with tuneable stoichiometry and variable morphologies

Guillaume Gouget, Patricia Beaunier, David Portehault, Clément Sanchez

Herein we highlight for the first time the ability to tune the stoichiometry of metal boride nanocrystals through nanoparticle synthesis in thermally stable inorganic molten salts. Two metal-boron systems are chosen as case studies: boron-poor nickel borides and boron-rich yttrium borides. We show…

Faraday Discussions, 2016, 191, pp.511 - 525. ⟨10.1039/C6FD00053C⟩. ⟨hal-01440776⟩

  • Article dans une revue

Sensing the Charge State of Single Gold Nanoparticles via Work Function Measurements

Yingjie Zhang, Olivier Pluchery, Louis Caillard, Anne-Félicie Lamic-Humblot, Sandra Casale, Yves J. Chabal, Miquel Salmeron

Electrostatic interactions at the nanoscale can lead to novel properties and functionalities that bulk materials and devices do not have. Here we used Kelvin probe force microscopy (KPFM) to study the work function (WF) of gold nanoparticles (NPs) deposited on a Si wafer covered by a monolayer of…

Nano Letters, 2015, 15 (1), pp.51-55. ⟨10.1021/nl503782s⟩. ⟨hal-01120624⟩

  • Article dans une revue

Theoretical investigation of the inversion parameter in Co-3 (-) sAlsO4 (s=0-3) spinel structures

Frederik Tielens, M. Calatayud, R. Franco, J. M. Recio, J. Perez-Ramirez, C. Minot

The structural, energetic, and thermodynamic properties of the Co-3 (-) sAlsO4 (s = 0, 1, 2, and 3) crystal family are studied using periodic DFT calculations. We provide a quantitative discussion of the cation distribution effect on the cell parameter, the oxygen Wyckoff position, the interatomic…

Solid State Ionics, 2009, 180 (14-16), pp.1011-1016. ⟨10.1016/j.ssi.2009.03.023⟩. ⟨hal-01361360⟩

  • Article dans une revue

Gold Grafted to Mesoporous Silica Surfaces, a Molecular Picture

A. Wojtaszek, I. Sobczak, M. Ziolek, Frederik Tielens

The adsorption of HAuCl(4), the typical precursor for gold grafting on metal oxide surfaces, is investigated on amorphous silica support. The adsorption of the precursor is investigated as a function of its chlorinated form, depending on the pH, using periodic DFT. The results are supported with…

Journal of Physical Chemistry C, 2009, 113 (31), pp.13855-13859. ⟨10.1021/jp9036815⟩. ⟨hal-01361364⟩

  • Article dans une revue

On the detrimental effect of tungstates on the n-C10-SCR of NOx on Ag/g-Al2O3

Juliette Blanchard, Rachel P. Doherty, Hiu Ying Law, Christophe Méthivier, Cyril Thomas

The influence of the addition of W to Al2O3, promoted or not by Ag, on the n-C10 SCR of NOx was investigated. It was shown that the addition of W was detrimental to the n-C10 SCR reaction. Based on the NOx- TPD, the XPS and the n-C10 SCR measurements, it was concluded that the loss of activity…

Top. Catal., 2013, Springer Science+Business Media New York 2013, pp.134-139. ⟨10.1007/s11244-013-9942-3⟩. ⟨hal-01121204⟩

  • Article dans une revue

Identification of Surface Basic Sites and Acid–Base Pairs of Hydroxyapatite

Sarah Diallo-Garcia, Manel Ben Osman, Jean-Marc Krafft, Sandra Casale, Cyril Thomas, Jun Kubo, Guylène Costentin

The Lewis and Brønsted basic properties of a stoichiometric hydroxyapatite (HAp) were investigated by infrared spectroscopy following the adsorption and desorption processes of a Lewis acidic molecule, CO2, and a Brønsted acidic molecule, C2H2. CO2 interacts with basic OH– and O2– of PO43– groups…

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 2014, 118 (24), pp.12744-12757. ⟨10.1021/jp500469x⟩. ⟨hal-01120667⟩