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2 results on '"French Région Ile de France - SESAME"'

1. Enhanced sieving from exfoliated MoS2 membranes via covalent functionalization

Author

Eddy Petit, Damien Voiry, Cristina Coelho Diogo, Lucie Ries, Philippe Miele, Mikhael Bechelany, Sebastien Balme, Nicolas Onofrio, Chrystelle Salameh, Christel Gervais, Thierry Michel, Institut Européen des membranes (IEM), Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM), Laboratoire Charles Coulomb (L2C), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Institut des matériaux de Paris-Centre (IMPC), Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut Universitaire de France (IUF), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.), Spectroscopie, Modélisation, Interfaces pour L'Environnement et la Santé (LCMCP-SMiLES), Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Hong Kong Polytech Univ, Dept Appl Phys, Hong Kong, Peoples R China, and French Région Ile de France – SESAME

Subjects
Materials science, NANOFILTRATION, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, law.invention, REACTIVE FORCE-FIELD, chemistry.chemical_compound, PERMEATION, law, WATER, [CHIM]Chemical Sciences, General Materials Science, REAXFF, Molybdenum disulfide, STABILITY, Graphene, Mechanical Engineering, IONIC TRANSPORT, General Chemistry, Permeation, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 0104 chemical sciences, Membrane, chemistry, Chemical engineering, Mechanics of Materials, Covalent bond, SIMULATION, SEPARATION, GRAPHENE OXIDE, Nanofiltration, 0210 nano-technology, Selectivity, Methyl group
Abstract

International audience; Nanolaminate membranes made of two-dimensional materials such as graphene oxide are promising candidates for molecular sieving via size-limited diffusion in the two-dimensional capillaries, but high hydrophilicity makes these membranes unstable in water. Here, we report a nanolaminate membrane based on covalently functionalized molybdenum disulfide (MoS2) nanosheets. The functionalized MoS2 membranes demonstrate >90% and similar to 87% rejection for micropollutants and NaCl, respectively, when operating under reverse osmotic conditions. The sieving performance and water flux of the functionalized MoS2 membranes are attributed both to control of the capillary widths of the nanolaminates and to control of the surface chemistry of the nanosheets. We identify small hydrophobic functional groups, such as the methyl group, as the most promising for water purification. Methyl- functionalized nanosheets show high water permeation rates as confirmed by our molecular dynamic simulations, while maintaining high NaCl rejection. Control of the surface chemistry and the interlayer spacing therefore offers opportunities to tune the selectivity of the membranes while enhancing their stability

Published
2019
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2. First acidic macro-mesocellular aluminosilicate monolithic foams 'SiAl(HIPE)' and their catalytic properties

Author

Cédric Boissière, Rénal Backov, Damien P. Debecker, Philippe Eliaers, Clément Sanchez, Guillaume Laurent, Stéphanie Huet, Institute of Condensed Matter and Nanosciences (ICMN), Université Catholique de Louvain = Catholic University of Louvain (UCL), Chaire Chimie des matériaux hybrides, Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre de recherches Paul Pascal (CRPP), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centre de Ressources Technologiques en Chimie (Certech), The French Région Ile de France SESAME program is acknowledged for financial support (700 MHz spectrometer)., and UCL - SST/IMCN/MOST - Molecules, Solids and Reactivity

Subjects
geography, geography.geographical_feature_category, Materials science, education, technology, industry, and agriculture, Metals and Alloys, Nanotechnology, [CHIM.CATA]Chemical Sciences/Catalysis, General Chemistry, Catalysis, Sial, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, High surface, Chemical engineering, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, Aluminosilicate, Emulsion, Materials Chemistry, Ceramics and Composites, Mixed oxide, Monolith, Mesoporous material
Abstract

International audience; A new type of acidic macrocellular and mesoporous silica-alumina foam is obtained via a one pot alkaline sol-gel route coupled with a concentrated emulsion-based templating technique. The mixed oxide monolith exhibits high surface acidity, translating in excellent performance in the acid-catalyzed dehydration of bioethanol to ethene.

Published
2015
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