Laboratoire de réactivité de surface

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  • Article dans une revue

A straightforward approach to high purity sodium silicide Na4Si4

Yang Song, Isabel Gómez-Recio, Ram Kumar, Cristina Coelho Diogo, Sandra Casale, Isabelle Génois, David Portehault

Sodium silicide Na4Si4 is a reductive and reactive source of silicon highly relevant to designing non-oxidic silicon materials, including clathrates, various silicon allotropes, and metal silicides. Despite the impor-tance of this compound, its production in high amounts and high purity is still a…

Dalton Transactions, 2021, 50 (45), pp.16703-16710. ⟨10.1039/D1DT03203H⟩. ⟨hal-03537395⟩

  • Thèse

New routes of preparation of active and stable mesoporous Ni-alumina based catalysts for methane dry reforming and CO2 methanation, Nouvelles voies de préparation de catalyseurs actifs et stables à base de Ni-alumine mésoporeuse pour le reformage à sec du méthane et la méthanation du CO2

Leila Karam

Dry reforming of methane (DRM) is a process that converts CH4 and CO2 gases into syngas, a gaseous mixture of H2 and CO. Ni based catalysts proved to be suitable for the reaction due to their good activity, wider availability and lower cost than noble-based materials. However, these catalysts are…, Le reformage à sec du méthane (DRM) est un processus qui convertit simultanément CH4 et CO2 en un mélange gazeux de H2 et de CO appelé syngas. Les catalyseurs à base de Ni sont particulièrement prometteurs mais ils ne sont pas stables en raison du frittage du Ni et du dépôt de coke. Dans cette…

Catalysis. Sorbonne Université; Université de Balamand (Tripoli, Liban), 2019. English. ⟨NNT : 2019SORUS163⟩. ⟨tel-03141292⟩

  • Thèse

Surface characterizations to investigate osteoarticular mesenchymal tissues : new insights to monitor the extracellular matrix remodeling at the supramolecular level, Caractérisations de surface pour étudier les tissus mésenchymateux ostéoarticulaires : nouvelles perspectives pour surveiller le remodelage de la matrice extracellulaire au niveau supramoléculaire

Ilhem Lilia Jaabar

A connective tissue is a cooperative set of differentiated cells entangled in an extracellular matrix (ECM). The latter, which is particularly abundant, is composed mainly of proteins, such as collagens, and a viscous gel made up of water and negatively charged polysaccharides: proteoglycans. All…, Un tissu conjonctif est un ensemble coopératif de cellules différenciées enchevêtrées dans une matrice extracellulaire (ECM). Cette dernière, particulièrement abondante, se compose principalement de protéines, telles que les collagènes, et d'un gel visqueux constitué d'eau et de…

Rhumatology and musculoskeletal system. Sorbonne Université, 2022. English. ⟨NNT : 2022SORUS145⟩. ⟨tel-04099571⟩

  • Article dans une revue

Crystalline Molybdenum Oxide Thin-Films for Application as Interfacial Layers in Optoelectronic Devices

André Luis Fernandes Cauduro, Roberto dos Reis, Gong Chen, Andreas K. Schmid, Christophe Méthivier, Horst-Günter Rubahn, Léo Bossard-Giannesini, Hervé Cruguel, Nadine Witkowski, Morten Madsen

The ability to control the interfacial properties in metal-oxide thin films through surface defect engineering is vital to fine tune their optoelectronic properties and thus their integration in novel optoelectronic devices. This is exemplified in photovoltaic devices based on organic, inorganic or…

ACS Applied Materials & Interfaces, 2017, 9 (8), pp.7717-7724. ⟨10.1021/acsami.6b14228⟩. ⟨hal-01464322⟩

  • Article dans une revue

Insights into OCP Identification and Quantification in the Context of Apatite Biomineralization

Marc Robin, Stanislaw von Euw, Guillaume Renaudin, Sandrine Gomes, Jean-Marc Krafft, Nadine Nassif, Thierry Azaïs, Guylene Costentin

Calcium phosphates (CaPs) are one of the major mineral families of wide interest in biomineralization and biomaterial development. The identification and quantification of the different CaP phases (crystalline and amorphous) remains a major challenge in both in vitro and in vivo systems. This work…

CrystEngComm, 2020, 22 (16), pp.2728-2742. ⟨10.1039/C9CE01972C⟩. ⟨hal-02503877⟩

  • Article dans une revue

Production and Characterization of Activated Carbon from Orange Peels by Chemical Activation with Sulfuric Acid

Sami Guiza, Salwa Hajyahia, Franck Launay, Mohamed Bagane

Oranges represent 75% of the total citrus fruits (Guiza in Ecol Eng, 99: 134–140, 2017) throughout the world, and Tunisia is one of the major juice producers. Orange peels could cause a significant disposal problem but they are also valuable biomass wastes (Valdes et al. in Langmuir 18: 2111–2116,…

Recent advances in environmental science from the Euro Mediterranean and surrounding regions, 2018, Advances in Science, Technology & Innovation, pp.959-961. ⟨10.1007/978-3-319-70548-4_278⟩. ⟨hal-04020437⟩

  • Article dans une revue

Preparation of highly hydrophilic PVA/SBA-15 composite materials and their adsorption behavior toward cationic dye: effect of PVA content

Zakaria Abid, Aboubakr Hakiki, Bouhadjar Boukoussa, Franck Launay, Hadj Hamaizi, Abdelkader Bengueddach, Rachida Hamacha

This work focuses on the preparation of highly hydrophilic polyvinyl alcohol/SBA-15 composites by impregnation method. In order to study the effect of polyvinyl alcohol (PVA) on the structural, textural properties of composites, several percentages of PVA were impregnated into the surface of the…

Journal of Materials Science, 2019, 54 (10), pp.7679-7691. ⟨10.1007/s10853-019-03415-w⟩. ⟨hal-04022368⟩

  • Article dans une revue

Bimetallic Au-Pd catalysts for selective hydrogenation of butadiene: Influence of the preparation method on catalytic properties

N. El Kolli, L. Delannoy, C. Louis

Supported Au catalysts modified by the addition of small amount of Pd (Au/Pd atomic ratio (10) were prepared according to three different methods, co-deposition-precipitation with urea (DPU), deposition of colloids stabilised either by polyvinyl alcohol (PVA) or by tetrakis (hydroxypropyl)…

Journal of Catalysis, 2012, 297, pp.79-92. ⟨10.1016/j.jcat.2012.09.022⟩. ⟨hal-00809388⟩

  • Article dans une revue

Time-resolved infrared spectroscopy in the study of photosynthetic systems.

Alberto Mezzetti, Winfried Leibl

Time-resolved (TR) infrared (IR) spectroscopy in the nanosecond to second timescale has been extensively used, in the last 30 years, in the study of photosynthetic systems. Interesting results have also been obtained at lower time resolution (minutes or even hours). In this review, we first…

Photosynthesis Research, 2017, 131 (2), pp.121-144. ⟨10.1007/s11120-016-0305-3⟩. ⟨hal-01451714⟩

  • Article dans une revue

Catalytic properties of AgAlBEA and AgSiBEA zeolites in H2-promoted selective reduction of NO with ethanol

Nataliia Popovych, Pavlo Kyriienko, Sergiy Soloviev, Svitlana Orlyk, Stanislaw Dzwigaj

Physicochemical properties of AgAlBEA and AgSiBEA zeolites were investigated by IR spectroscopy with pyridine, H2-TPR, XPS and diffuse reflectance UV–vis spectroscopy. Their catalytic properties were studied in the process of selective reduction of NO with ethanol and in the presence of hydrogen in…

Microporous and Mesoporous Materials, 2015, 203, pp.163-169. ⟨10.1016/j.micromeso.2014.10.037⟩. ⟨hal-01128209⟩