• Article dans une revue

Polyol Process Coupled to Cold Plasma as a New and Efficient Nanohydride Processing Method: Nano-Ni 2 H as a Case Study

Sonia Haj-Khlifa, Sophie Nowak, Patricia Beaunier, Patricia de Rango, Michaël Redolfi, Souad Ammar-Merah

An alternative route for metal hydrogenation has been investigated: cold plasma hydrogen implantation on polyol-made transition metal nanoparticles. This treatment applied to a challenging system, Ni-H, induces a reordering of the metal lattice, and superstructure lines have been observed by both…

Nanomaterials, 2020, 10 (1), pp.136. ⟨10.3390/nano10010136⟩. ⟨hal-02552297⟩

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Metallomics in deep time and the influence of ocean chemistry on the metabolic landscapes of Earth's earliest ecosystems

Keyron Hickman-Lewis, Barbara Cavalazzi, Stéphanie Sorieul, Pascale Gautret, Frédéric Foucher, Martin Whitehouse, Heejin Jeon, Thomas Georgelin, Charles Cockell, Frances Westall

Modern biological dependency on trace elements is proposed to be a consequence of their enrichment in the habitats of early life together with Earth's evolving physicochemical conditions; the resulting metallic biological complement is termed the metallome. Herein, we detail a protocol for…

Scientific Reports, 2020, ⟨10.1038/s41598-020-61774-w⟩. ⟨insu-02511006⟩

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Triple structuration and enhanced corrosion performance of 316L in Laser-Powder Bed Fusion

Alexis Fouchereau, Hicham Maskrot, Fernando Lomello, Sophie Bosonnet, Oumaïma Gharbi, Benoit Gwinner, Pierre Laghoutaris, Frédéric Schuster, Vincent Vivier, Beatriz Puga

This work focuses on the influence of the feedstock powders on the microstructural properties and corrosion behavior of 316L stainless steel (SS) produced by laser powder bed fusion (L-PBF) from two different suppliers. Microstructural investigations conducted after additive manufacturing reveal…

Corrosion Science, 2024, 228, pp.111830. ⟨10.1016/j.corsci.2024.111830⟩. ⟨cea-04602059⟩

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Hierarchical collagen-hydroxyapatite nanostructures designed through layer-by-layer assembly of crystal-decorated fibrils

Elodie Colaço, Dalil Brouri, Nesrine Aissaoui, Pauline Cornette, Vincent Dupres, Rute F Domingos, Jean-François Lambert, Emmanuel Maisonhaute, Karim El Kirat, Jessem Landoulsi

A comprehensive understanding of the mechanism by which type I collagen (Col) interacts with hydroxyapatite nanoparticles (Hap NPs) in aqueous solutions is a pivotal step for guiding the design of biologically relevant nanocomposites with controlled hierarchical structure. In this paper we use a…

Biomacromolecules, 2019, 20, pp.4522-4534. ⟨10.1021/acs.biomac.9b01299⟩. ⟨hal-02361539⟩

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IR Operando Study of the Acetylene Effect on the NO Reduction Mechanism on Pd–Rh/CeO2–ZrO2 Three-Way Catalyst

T. Onfroy, O. Marie

Topics in Catalysis, 2019, 62, pp.336-344. ⟨10.1007/s11244-018-1092-1⟩. ⟨hal-02019086⟩

• Article dans une revue

Converting silicon nanoparticles into nickel iron silicide nanocrystals within molten salts for water oxidation electrocatalysis

Yang Song, Sandra Casale, Antoine Miche, David Montero, Christel Laberty-Robert, David Portehault

We synthesize metal silicide electrocatalysts for water oxidation, by using the high reactivity of silicon nanoparticles and the unique stability and low vapor pressure of molten salt solvents. We can then perform liquid-phase synthesis under vacuum at 300-400 C. This strategy yields FeSi, Ni 2 Si…

Journal of Materials Chemistry A, 2022, 10 (3), pp.1350-1358. ⟨10.1039/D1TA08097K⟩. ⟨hal-03537470⟩

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Alternative ball-milling synthesis of vanadium-substituted polyoxometalates as catalysts for the aerobic cleavage of C–C and C–O bonds

Louay Al-Hussaini, Sabine Valange, Maria Elena Gálvez, Franck Launay

Ball-milling-based synthesis of vanadium-substituted phosphomolybdic acid enables energy saving while improving the yield and providing active catalysts for aerobic oxidative cleavage.

Dalton Transactions, 2021, 50 (37), pp.12850-12859. ⟨10.1039/D1DT01585K⟩. ⟨hal-04025223⟩

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A TEM and UV-visible study of silver reduction by ethanol in Ag-alumina catalysts

Elie Sayah, Dalil Brouri, Yiaho Wu, Andrea Musa, Patrick da Costa, Pascale Massiani

A transmission electron microscopy (TEM) study dedicated to the understanding of dispersion and location of Ag nanospecies in silver-alumina catalysts is reported. A special attention is put on the conditions of powder catalyst deposition on the grids for TEM analysis. When the deposition is…

Applied Catalysis A : General, 2011, 406, pp.94-101. ⟨10.1016/j.apcata.2011.08.016⟩. ⟨hal-00668908⟩

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NMR cogwheel phase cycling determination with web tools: Amplitude-modulated z-filter MQMAS sequence

Yannick Millot, Redouane Hajjar, Pascal P. Man

Our recent method based on the use of web tools (XML and XSLT) for constructing cogwheel phase cycles is extended to the selection of two sym. coherence transfer pathways in the case of an amplitude-modulated z-filter MQMAS sequence. For all spins (I=3/2, 5/2, 7/2 and 9/2) and all MQ expts. we…

Solid State Nuclear Magnetic Resonance, 2010, 38 (1), pp.19-26. ⟨10.1016/j.ssnmr.2010.06.001⟩. ⟨hal-00604781⟩

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Light olefin transformation over ZSM-5 zeolites with different acid strengths - A kinetic model

P. Oliveira, P. Borges, R. Ramos Pinto, M. A. N. D. A. Lemos, F. Lemos, Jacques C. Vedrine, F. Ramoa Ribeiro

The authors analyzed the influence of the acidity of a ZSM-5 catalyst on the catalytic transformation of various short-chain olefins (ethylene, propylene and 1-butene). Four ZMS-5 catalysts with different acid strength distributions were studied at different temps. and partial pressures. The…

Applied Catalysis A : General, 2010, 384 (1-2), pp.177-185. ⟨10.1016/j.apcata.2010.06.032⟩. ⟨hal-00604786⟩