• Article dans une revue

Surface-generated copper ions induce multilayer growth of small peptides

Jessem Landoulsi, Vincent Dupres, Christophe Méthivier, Ivan Leteyi Mfiban, Pauline Cornette, Elodie Colaço, Claire-Marie Pradier

Herein, we investigate the adsorption behavior of a small peptide, Glu-Cys-Gly, in aqueous solution onto copper surface and unravel a mechanism of growth of a hybrid peptide-copper multilayer the thickness of which may exceed a hundred of nanometers. Thanks to a combined set of surface…

Applied Surface Science, 2020, 507, pp.145105. ⟨10.1016/j.apsusc.2019.145105⟩. ⟨hal-03489696⟩

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Long-Lived Charge-Separated States in ZnS/Na-MOR Zeolite upon <i>trans</i>-Stilbene Adsorption

Pedro Henrique Morais Andrade, Matthieu Hureau, Anne-Sophie Mamede, Pascale Massiani, Alexandre Legrand, Alain Moissette

Electron transfer (ET) processes are of fundamental importance in many photochemical processes in biological and chemical systems. Here, semiconductor nanoparticles of ZnS (as electron relay) and trans-stilbene molecules (t-St) (as electron donor), both confined within the porous volume of…

• Article dans une revue

Towards the synthesis of mixed oxides with controlled stoichiometry from Prussian blue analogues

Virgile Trannoy, Amélie Bordage, Jordan Dezalay, Romuald Saint-Martin, Eric Rivière, Patricia Beaunier, Cédric Baumier, Camille La Fontaine, Giulia Fornasieri, Anne Bleuzen

Controlling the synthesis of mixed oxides is of great interest since their stoichiometry influences the properties. We present here the transformation of the Co4[Fe(CN)6]2.7 Prussian blue analogue (PBA) into the mixed Co1.8Fe1.2O4 spinel oxide, with a detailed characterization of the final phase (…

CrystEngComm, 2019, 21 (23), pp.3634-3643. ⟨10.1039/c9ce00427k⟩. ⟨hal-02187860⟩

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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⟩

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One Step up the Ladder of Prebiotic Complexity: Formation of Nonrandom Linear Polypeptides from Binary Systems of Amino Acids on Silica

Yuriy Sakhno, Alice Battistella, Alberto Mezzetti, Maguy Jaber, Thomas Georgelin, Laurent Michot, Jean-François Lambert

Evidence for the formation of linear oligopeptides with nonrandom sequences from mixtures of amino acids coadsorbed on silica and submitted to a simple thermal activation is presented. The amino acid couples (glutamic acid+leucine) and (aspartic acid+valine) were deposited on a fumed silica and…

Chemistry - A European Journal, 2019, 25 (5), pp.1275-1285. ⟨10.1002/chem.201803845⟩. ⟨hal-02067461⟩

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Dynamics of Hydration in Vanadia-Titania Catalysts at Low Loading: A Theoretical and Experimental Study

Anna E. Lewandowska, Monica Catalayud, Frederik Tielens, Miguel A. Banares

The hydration process of dehydrated vanadia-titania catalysts at low loading is investigated using periodic DFT calculations. We focus on the early stages of the hydration process of the vanadia-titania in order to shed light onto the structural and dynamical changes occurring at the molecular…

Journal of Physical Chemistry C, 2011, 115, pp.24133-24142. ⟨10.1021/jp204726b⟩. ⟨hal-00669737⟩