• Thèse

Comportement en corrosion d'un acier austénitique enrichi en silicium en milieu acide nitrique sous flux thermique, Corrosion behavior of a silicon-rich stainless steel in nitric acid media under heat transfer

Inès Bahtit

Ce travail de thèse traite du comportement en corrosion de l’acier austénitique enrichi en Si (acier 1.4361) dans un milieu 2,5 mol L-1 HNO3 + 2,5 mol L-1 NaNO3 en fonction de la température et s’inscrit dans un cadre d’étude sur le vieillissement des matériaux constitutifs des installations de l’…, This thesis deals with the corrosion behavior of Si-enriched austenitic steel (stainless steel 1.4361) in a 2.5 mol L-1 HNO3 + 2.5 mol L-1 NaNO3 medium as a function of temperature and contributes to studies on the aging of materials used in the La Hague plant. The temperature range studied extends…

Chimie analytique. Sorbonne Université, 2023. Français. ⟨NNT : 2023SORUS057⟩. ⟨tel-04081948⟩

• Thèse

Catalysis assisted by plasmon, Catalyse assistée par plasmon

Iyad Sarhid

Metallic nanoparticles (NPs) have many applications in catalysis. Some of them (gold, silver, copper) have a visible absorption resulting from the excitation of the surface plasmon by an external electromagnetic field. In this project, we propose to couple the catalytic properties of gold-based…, Les nanoparticules (NPs) métalliques ont de nombreuses applications en catalyse. Certaines d’entre elles (or, argent, cuivre) présentent une absorption dans le visible résultant de l’excitation du plasmon de surface par un champ électromagnétique extérieur. Nous proposons dans ce projet de coupler…

Catalysis. Université Paris Saclay (COmUE), 2019. English. ⟨NNT : 2019SACLS227⟩. ⟨tel-02724739⟩

• Article dans une revue

Determination of Integrated Molar Absorption Coefficients for Gaseous Phenol Infrared Bands and Influence of Water Vapor on Their Values

Thomas Onfroy, Olivier Marie

American Journal of Analytical Chemistry, 2019, 10 (01), pp.9-22. ⟨10.4236/ajac.2019.101002⟩. ⟨hal-02019083⟩

• Article dans une revue

An expeditious synthesis of early transition metal carbide nanoparticles on graphitic carbons

Debora Ressnig, Simona Moldovan, Ovidiu Ersen, Patricia Beaunier, David Portehault, Clément Sanchez, Sophie Carenco

An expeditious synthesis of metal carbide nanoparticles onto various carbon supports is demonstrated. The procedure is versatile and readily yields TiC, VC, Mo2C and W2C nanoparticles on different types of carbons. The reaction is initiated at room temperature and proceeds within seconds. This…

Chemical Communications, 2016, 52 (61), pp.9546-9549. ⟨10.1039/c6cc04157d⟩. ⟨hal-01346258v2⟩

• Poster de conférence

Fate of Organic Molecules in the Mars Regolith Under UV Radiation Deduced from the MOMIE Laboratory Experiment

Cyril Szopa, Patrice Coll, Fabien Stalport, Olivier Poch, Maguy Jaber, Jean-François Lambert, Laura Rouquette, Jérôme Lasne

Among bioindicators or biosigna- tures, organic molecules present on Mars could be re- trieved in the regolith near the surface due to erosion of rocks and gardening of the soil from meteorites bom- bardment through the Mars history. Once their, the organic molecules are submitted to the harsh…

• Article dans une revue

Phosphoribosyl Pyrophosphate: A Molecular Vestige of the Origin of Life on Minerals

Mariame Akouche, Maguy Jaber, Marie-Christine Maurel, Jean-François Lambert, Thomas Georgelin

In this contribution, we report the formation under prebiotic conditions of phosphoribosyl pyrophosphate (PRPP) as a molecular precursor in the one-pot synthesis of a canonical nucleotide, namely adenosine monophosphate (AMP) from its building blocks (KH2PO4 or Pi, adenine, and d-ribose), on a…

Angewandte Chemie International Edition, 2017, 56 (27), pp.7920 - 7923. ⟨10.1002/anie.201702633⟩. ⟨hal-01652008⟩

• Article dans une revue

PdAg alloy nanoparticles encapsulated in N-doped microporous hollow carbon spheres for hydrogenation of CO2 to formate

Guoxiang Yang, Yasutaka Kuwahara, Kohsuke Mori, Catherine Louis, Hiromi Yamashita

Here, we report a general synthesis approach to produce PdAg nanoparticles (NPs) that are dispersed uniformly within N-doped microporous hollow carbon spheres (NMHCS) for hydrogenation of CO2 to formate. The optimized PdAg@NMHCS catalyst, which was obtained by using an optimized amount of…

Applied Catalysis B: Environmental, 2021, 283, pp.119628. ⟨10.1016/j.apcatb.2020.119628⟩. ⟨hal-03995568⟩

• Article dans une revue

Proving ligand structure-reactivity correlation on multinuclear copper electrocatalysts supported on carbon black for the oxygen reduction reaction

Ricardo Venegas, Karina Muñoz-Becerra, Sophie Juillard, Lin Zhang, Rubén Oñate, Ingrid Ponce, Vincent Vivier, Francisco J Recio, Carlos M Sánchez-Sánchez

Bioinspired transition-metal catalysts seek to mimic the specific active site of metalloenzymes, as the multicopper oxidase, that can efficiently reduce dioxygen to water via a complete 4-electrons mechanism at low overpotential. However, the multicopper oxidase enzymes lack stability under…

Electrochimica Acta, 2022, 434, pp.141304. ⟨10.1016/j.electacta.2022.141304⟩. ⟨hal-03808243⟩

• Article dans une revue

Permanently hydrophilic, piezoelectric PVDF nanofibrous scaffolds promoting unaided electromechanical stimulation on osteoblasts

Maria Kitsara, Andreu Blanquer, Gonzalo Murillo, Vincent Humblot, Sara de Bragança Vieira, Carme Nogués, Elena Ibáñez, Jaume Esteve, Leonardo Barrios

Biomimetic functional scaffolds for tissue engineering should fulfil specific requirements concerning structural, biochemical and electro-mechanical characteristics, depending on the tissue that they are designed to resemble. In bone tissue engineering, piezoelectric materials based on poly(…

Nanoscale, 2019, 11 (18), pp.8906-8917. ⟨10.1039/C8NR10384D⟩. ⟨hal-02351810⟩

• Article dans une revue

2D Monolayer of 1T' Phase of Alloyed WSSe from Colloidal Synthesis

Ashkan Shahmanesh, Davide Romanin, Corentin Dabard, Sang-Soo Chee, Charlie Gréboval, Christophe Methivier, Mathieu G Silly, Julien Chaste, Matthieu Bugnet, Debora Pierucci, Abdelkarim Ouerghi, Matteo Calandra, Emmanuel Lhuillier, Benoit Mahler

We explore the colloidal growth of monolayers of WSSe alloy in their 1T' phase with various Se content. We develop a synthetic procedure leading to reduced aggregation of the flakes. The presence of a narrow band-gap close to the top of the valence band has been evidenced combining…

Journal of Physical Chemistry C, 2021, 125 (20), pp.11058-11065. ⟨10.1021/acs.jpcc.1c02275⟩. ⟨hal-03227064⟩