Laboratoire de réactivité de surface

Publications du LRS

Publications HAL

Recherche Avancée

  • Article dans une revue

Au-Modified Pd catalyst exhibits improved activity and stability for NO direct decomposition

Taha Elgayyar, Josefine Schnee, Alain Tuel, Laurence Burel, Francoise Bosselet, Yves Schuurman, Frederic C Meunier, Laurent Delannoy, Cyril Thomas

The direct decomposition of NO x at moderate temperatures is a challenge because of the poisoning of the surface of noble metals by oxygen, yet the modification of Pd with Au enables obtaining a highly stable catalyst under an O 2-free feed at 450°C. Care was taken to ensure that the reaction was…

Catalysis Science & Technology, 2021, 11, pp.2908 - 2914. ⟨10.1039/d1cy00301a⟩. ⟨hal-03240877⟩

  • Communication dans un congrès

On the graphical analysis of the impedance response of passive electrodes

Mai T.T. Tran, Oumaïma Gharbi, Mark E Orazem, Bernard Tribollet, Mireille Turmine, Vincent Vivier

The analysis of the capacitive behavior of a passive electrode is often a difficult subject because the response obtained by electrochemical impedance spectroscopy (EIS) is characterized by a non-ideal behavior that we try to model by using a constant phase element (CPE) [1, 2]. In doing so, both…

241st ECS Meeting of The Electrochemical Society, ECS, May 2022, Vancouver (CA), Canada. ⟨hal-03994070⟩

  • Article dans une revue

Potent antimicrobial peptides against Legionella pneumophila and its environmental host, Acanthamoeba castellanii.

Margot Schlusselhuber, Vincent Humblot, Sandra Casale, Christophe Méthivier, Julien Verdon, Matthias Leippe, Jean-Marc Berjeaud

Legionella pneumophila, the major causative agent of Legionnaires' disease, is most often found in the environment in close association with free-living amoebae, leading to persistence, spread, biocide resistance, and elevated virulence of the bacterium. In the present study, we evaluated the…

Applied Microbiology and Biotechnology, 2015, 99 (11), pp.4879-91. ⟨10.1007/s00253-015-6381-z⟩. ⟨hal-01427428⟩

  • Article dans une revue

Control of the anisotropic shape of cobalt nanorods in the liquid phase: from experiment to theory… and back

Kahina Aït Atmane, Carine Michel, Jean-Yves Piquemal, Philippe Sautet, Patricia Beaunier, Marion Giraud, Mickaël Sicard, Sophie Nowak, Rémi Losno, G. Viau

The polyol process is one of the few methods allowing the preparation of metal nanoparticles in solution. Hexagonal close packed monocrystalline Co nanorods are easily obtained in basic 1,2-butanediol at 448 K after a few minutes using a Co(II) dicarboxylate precursor. By using a combined…

Nanoscale, 2014, 6 (5), pp.2682-2692. ⟨10.1039/C3NR03686C⟩. ⟨hal-01131455⟩

  • Article dans une revue

Catalytic activity of HAlBEA and NixHAlBEA zeolites in hydrogen-assisted dehydrochlorination of 1,2-dichloroethane into vinyl chloride monomer

Rafal Baran, Anna Srebowata, I.I. Kaminska, D. Łomot, Stanislaw Dzwigaj

HAlBEA zeolite is prepared by calcination of parent TEABEA zeolite at 823 K for 3 h in air following ionic exchange with NH4NO3 solution. NixHAlBEA zeolites are prepared by impregnation of HAlBEA with an aqueous solution of Ni(NO3)2, following a drying at 333 K to obtain NixHAlBEA. The calcination…

Microporous and Mesoporous Materials, 2013, 180, pp.209-218. ⟨10.1016/j.micromeso.2013.06.037⟩. ⟨hal-00910991⟩

  • Article dans une revue

Identification of iron species in FeSiBEA by DR UV-vis, XPS and Mössbauer spectroscopy: Influence of Fe content

J. Gurgul, K. Łątka, I. Hnat, J. Rynkowski, S. Dzwigaj

The nature of iron in FeSiBEA zeolite was identified using DR UV-vis, XPS and Mössbauer spectroscopy. Various FexSiBEA zeolites (x = 3.8, 8.2 and 15 wt.%) were prepared by a two-step post synthesis method, which consisted in the creation of vacant T-atom sites by dealumination of tetraethylammonium…

Microporous and Mesoporous Materials, 2013, 168, pp.1-6. ⟨10.1016/j.micromeso.2012.09.015⟩. ⟨hal-00812092⟩

  • Article dans une revue

Influence of the nature and environment of vanadium in VSiBEA zeolite on selective catalytic reduction of NO with ammonia

R. Baran, T. Onfroy, T. Grzybek, S. Dzwigaj

The influence of the nature and environmental of vanadium on the catalytic properties of VxSiBEA zeolite in selective catalytic reduction of NO with ammonia is investigated. Catalysts containing 1-7.5 wt.% of vanadium were prepared by a two-step postsynthesis method which consists, in the first…

Applied Catalysis B: Environmental, 2013, 136-137, pp.186-192. ⟨10.1016/j.apcatb.2013.02.014⟩. ⟨hal-00812157⟩

  • Article dans une revue

Unraveling the Direct Decomposition of NO x over Keggin Heteropolyacids and Their Deactivation Using a Combination of Gas-IR/MS and In Situ DRIFT Spectroscopy

Josefine Schnee, Laurent Delannoy, Guylène Costentin, Cyril Thomas

Keggin heteropolyacids (HPAs) have been known to be efficient NOx absorbers for many years, and to decompose a significant fraction of the NOx species pre-absorbed at 100-150 °C into harmless N2 and O2 upon rapid heating to 450 °C. However, this capability of Keggin HPAs to directly decompose NOx…

Journal of Physical Chemistry C, In press, ⟨10.1021/acs.jpcc.0c05945⟩. ⟨hal-02960399⟩

  • Article dans une revue

Stability of Binary SAMs Formed by omega-Acid and Alcohol Functionalized Thiol Mixtures

Frederik Tielens, Vincent Humblot, Claire-Marie Pradier, Monica Calatayud, Francesc Illas

A simple model is presented to describe the mixing process of acid- and alcohol-terminated thiol self-assembled monolayers (SAMs) on Au(111). It was found that the low-concentration acid-terminated SAMs are enriched in acid thiol compared with the original solution from which the SAM is made. Due…

Langmuir, 2009, 25 (17), pp.9980-9985. ⟨10.1021/la901127g⟩. ⟨hal-01361365⟩

  • Article dans une revue

Design of TiO2/Au nanoparticle films with controlled crack formation and different architectures using a centrifugal strategy

Abdelhafed Taleb, Frederic Mesguich, Thomas Onfroy, Xue Yanpeng

Here we present an approach to design hybrid nanocomposite films based on TiO2/Au nanoparticles using centrifugation processes. The prepared nanocomposite films have been characterized by different techniques such as FEGSEM, TEM, BET and XRD. Furthermore it is demonstrated that centrifugal force…

RSC Advances, 2015, 5 (10), pp.7007-7017. ⟨10.1039/C4RA13829E⟩. ⟨hal-01121614⟩