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  • Article dans une revue

A Hydrothermal-Sedimentary Context for the Origin of Life

Frances Westall, Keyron Hickman-Lewis, Nancy Hinman, Pascale Gautret, Kathleen A Campbell, Jean-Gabriel Bréhéret, Frédéric Foucher, Axelle Hubert, Stephanie Sorieul, Avinash Vicholous Dass, Terence P. Kee, Thomas Georgelin, André Brack

Critical to the origin of life are the ingredients of life, of course, but also the physical and chemical conditions in which prebiotic chemical reactions can take place. These factors place constraints on the types of Hadean environment in which life could have emerged. Many locations, ranging…

Astrobiology, 2018, 18 (3), pp.259-293. ⟨10.1089/ast.2017.1680⟩. ⟨hal-01740060⟩

  • Article dans une revue

Integrated stopped-flow device for the study of porous materials using hyperpolarized $^{129}$Xe NMR

Jing Li, Estelle Léonce, Corentin Coutellier, Céline Boutin, Kévin Chighine, Charles Rivron, Anne Davidson, Patrick Berthault

A simple, low-cost, and efficient device is proposed for the study of porous materials via NMR using small gas probes. Mainly built through additive manufacturing and being equipped with a radiofrequency solenoid microcoil, it only requires tiny quantities of sample and/or gas and is particularly…

Analytical Chemistry, 2024, ⟨10.1021/acs.analchem.4c00490⟩. ⟨cea-04596570⟩

  • Article dans une revue

Heterostructured Cobalt Silicide Nanocrystals: Synthesis in Molten Salts, Ferromagnetism, and Electrocatalysis

Yang Song, Isabel Gómez-Recio, Anissa Ghoridi, Fernando Igoa Saldaña, Daniel Janisch, Capucine Sassoye, Vincent Dupuis, David Hrabovsky, M. Luisa Ruiz-González, José González-Calbet, Sandra Casale, Andrea Zitolo, Benedikt Lassalle-Kaiser, Christel Laberty-Robert, David Portehault

Nanoscale heterostructures of covalent intermetallics should give birth to a wide range of interface-driven physical and chemical properties. Such a level of design however remains unattainable for most of these compounds, due to the difficulty to reach a crystalline order of covalent bonds at the…

Journal of the American Chemical Society, 2023, 145 (35), pp.19207-19217. ⟨10.1021/jacs.3c01110⟩. ⟨hal-04199618⟩

  • Communication dans un congrès

Photochemistry of organic molecules in the Solar System: experimental studies outside the International Space Station. The cases of glycine, and nucleobases

Hervé Cottin, Giovanni Strazzulla, M. Dobrijevic, Frances Westall, Gaelle Coussot, A. Le Postollec, Nicolas Fray, Didier Chaput, Richard C. Quinn, . Andrew Mattioda, Giuseppe Baratta, Mario Accolla, Thomas Georgelin, Fabien Stalport, Laura Rouquette, Cyril Szopa, Kafila Saiagh, Jodie Bellila, Katia Grira, Andreas Elsaesser, Nathalie Carrasco, Avinash-Vicholous Dass, M. E. Palumbo

Solar UV radiation is a major source of energy for initiating chemical evolution towards complex organic structures, but it can also photo-dissociate even the most complex molecules. Thus, solar UV can erase the organic traces of past life at the surface of planets, such as Mars, destroy organic…

42nd COSPAR Scientific Assembly, Jul 2018, Pasadena, Californie, United States. ⟨hal-01901917⟩

  • Article dans une revue

Metal–Support Interactions in Pt-WO 3 Heterostructures: Role of WO 3 Polymorphism

Isabel Gómez-Recio, Cyril Thomas, Christophe Méthivier, María Luisa Ruiz-González, José González-Calbet, David Portehault

Ionic exchange under soft conditions yields nanoplatelets of tungsten bronzes with an original crystal structure doped with cobalt, copper, platinum, and cesium cations (h′-MxWO3). The optimal orientation of the tunnel-based crystal structure, perpendicular to the basal plane of the nanoplatelets,…

Chemistry of Materials, 2023, 35 (19), pp.7931-7942. ⟨10.1021/acs.chemmater.3c01128⟩. ⟨hal-04752694⟩

  • Article dans une revue

Ce- and Y-Modified Double-Layered Hydroxides as Catalysts for Dry Reforming of Methane: On the Effect of Yttrium Promotion

Katarzyna Świrk, Magnus Rønning, Monika Motak, Patricia Beaunier, Patrick da Costa, Teresa Grzybek

Ce- and Y-promoted double-layered hydroxides were synthesized and tested in dry reforming of methane (CH4/CO2 = 1/1). The characterization of the catalysts was performed using X-ray fluorescence (XRF), X-ray diffraction (XRD), N2 sorption, temperature-programmed reduction in H2 (TPR-H2),…

Catalysts, 2019, 9 (1), pp.56. ⟨10.3390/catal9010056⟩. ⟨hal-02057457⟩

  • Article dans une revue

Phase selective synthesis of nickel silicide nanocrystals in molten salts for electrocatalysis of the oxygen evolution reaction

Ram Kumar, Mounib Bahri, Yang Song, Francisco Gonell, Cyril Thomas, Ovidiu Ersen, Clément Sanchez, Christel Laberty-Robert, David Portehault

We report phase selective synthesis of intermetallic nickel silicide nanocrystals in inorganic molten salts. NiSi and Ni2Si nanocrystals are obtained by reacting a nickel (II) salt and sodium silicide Na4Si4 in the molten LiI-KI inorganic eutectic salt mixture. We report that nickel silicide…

Nanoscale, 2020, 12 (28), pp.15209-15213. ⟨10.1039/D0NR04284F⟩. ⟨hal-02923099⟩

  • Article dans une revue

Magnetic Traits in CoO‐Core@CoFe 2 O 4 ‐shell Like Nanoparticles

Nancy Flores-Martinez, Margot Roemer, Sarra Gam-Derouich, Patricia Beaunier, David Habrovsky, Souad Ammar

Antiferromagnetic (AF) CoO pseudo-single crystals 125±20 nm in diameter were prepared by forced hydrolysis in polyol and used as seeds to grow a poly- and nano-crystalline (5 nm in diameter) ferrimagnetic (F) CoFe2O4 shell. Transmission electron microscopy (TEM) showed a certain epitaxy between the…

ChemNanoMat, 2019, 5 (4), pp.514-524. ⟨10.1002/cnma.201800544⟩. ⟨hal-04022347⟩

  • Article dans une revue

Multiple-Cell Microfluidic Dielectric Resonator for Liquid Sensing Applications

Ala Eldin Omer, George Shaker, Safieddin Safavi-Naeini, Kieu Ngo, Raed M Shubair, Georges Alquié, Frédérique Deshours, Hamid Kokabi

This paper presents a high-sensitive planar microwave sensor based on the metamaterial technology, integrated with a microfluidic channel to be used for liquid sensing in a variety of biomedical applications. The sensor design comprises three cells of circular complementary split ring resonators (…

IEEE Sensors Journal, 2021, 21 (5), pp.6094-6104. ⟨10.1109/JSEN.2020.3041700⟩. ⟨hal-03597238⟩

  • Article dans une revue

Deciphering pathological remodelling of the human cartilage extracellular matrix in osteoarthritis at the supramolecular level

Ilhem Lilia Jaabar, Pauline Cornette, Antoine Miche, Kristell Wanherdrick, Vincent Dupres, François-Paul Ehkirch, Adeline Cambon Binder, Francis Berenbaum, Xavier Houard, Jessem Landoulsi

Osteoarthritis induces a combination of chemical, structural and nanomechanical changes to collagen fibrils and aggrecan aggregates, the main building blocks of cartilage ECM, that may be mimicked by specific enzymatic reactions.

Nanoscale, 2022, 14 (24), pp.8691-8708. ⟨10.1039/d2nr00474g⟩. ⟨hal-03986333⟩