• Article dans une revue

Effects of organic and inorganic treatment agents on the formation of conversion layer on hot-dip galvanized steel: An X-ray photoelectron spectroscopy study

S. Le Manchet, D. Verchere, Jessem Landoulsi

The formation of a Cr-free conversion layer on hot-dip galvanized (HDG) steel involves various interfacial processes which radically influence the composition of the coating and thus its performance. Here, we investigate the role of the main constituents contained in the treatment bath, the…

Thin Solid Films, 2012, 520, pp.2009-2016. ⟨10.1016/j.tsf.2011.09.064⟩. ⟨hal-00748848⟩

• Article dans une revue

Intracellular biosynthesis of superparamagnetic 2-lines ferri-hydrite nanoparticles using Euglena gracilis microalgae

Roberta Brayner, Thibaud Coradin, Patricia Beaunier, Jean-Marc Greneche, Chakib Djediat, Claude Yéprémian, Alain Couté, Fernand Fievet

The intracellular biosynthesis of superparamagnetic (blocking temperature 5.6 K) 2-lines ferrihydrite (Fh2L) nanoparticles was observed within living Euglena gracilis microalgae.

Colloids and Surfaces B: Biointerfaces, 2012, 93, pp.20-23. ⟨10.1016/j.colsurfb.2011.10.014⟩. ⟨hal-00750391⟩

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The past, present and future of heterogeneous catalysis

Ioana Fechete, Ye Wang, Jacques Vedrine

This review highlights key catalytic discoveries and the main industrial catalytic processes over the last 300 years that involved commodities, fine chemicals, petrochemicals, petroleum transformation for fuels and energy supply, emission control, and so forth. In the past, discoveries have often…

Catalysis Today, 2012, 189, pp.2-27. ⟨10.1016/j.cattod.2012.04.003⟩. ⟨hal-00744317⟩

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Nanocrystalline NbC formation from mesostructured niobium oxide studied by HRTEM, SAED and in situ XRD

S. Witkowski, M. Ruszak, Celine Sayag, J. Pielaszek, G. Djéga-Mariadassou

Mechanism of the nanometric size niobium carbide synthesis from mesostructured niobium oxide precursor is proposed. High-resolution transmission electron microscopy (HRTEM) and selected area electron diffraction (SAED) combined with in situ X-ray diffraction (XRD) were successfully used to study…

Applied Catalysis A : General, 2006, 307, pp.205-211. ⟨10.1016/j.apcata.2006.03.044⟩. ⟨hal-00128099⟩

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Plasmonic catalysis for the Suzuki–Miyaura cross-coupling reaction using palladium nanoflowers

Iyad Sarhid, Ibrahim Abdellah, Cyril Martini, Vincent Huc, Diana Dragoe, Patricia Beaunier, Isabelle Lampre, Hynd Remita

New Journal of Chemistry, 2019, 43 (11), pp.4349-4355. ⟨10.1039/C8NJ06370B⟩. ⟨hal-02399070⟩

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Rheo-SAXS study of a shear-thinning hydrogel containing clay nanoplatelets

Claire Hotton, Guylaine Ducouret, Juliette Sirieix-Plénet, Thomas Bizien, Clément Guibert, Pierre Levitz, Laurent Michot, Natalie Malikova

Shear-induced orientation of clay nanoplatelets within a physically cross-linked hydrogel based on ionenes, positively charged polyelectrolytes, is studied here. Small angle X-ray scattering measurements (SAXS) are performed under shear within a Couette cell cylinder (rheo-SAXS). As the SAXS signal…

Applied Clay Science, 2024, 255 (107392), ⟨https://doi.org/10.1016/j.clay.2024.107392⟩. ⟨hal-04440893v2⟩

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Methanol Oxidation to Formaldehyde on VSiBEA Zeolite: A Combined DFT/vdW/Transition Path Sampling and Experimental Study

Diana C. Tranca, Frerich J. Keil, Ionut Tranca, Monica Calatayud, Stanislaw Dzwigaj, Maciej Trejda, Frederik Tielens

Density functional calculations have been performed applying periodic boundary conditions to investigate the oxidation of methanol on vanadium-containing SiBEA zeolite (VSiBEA). Different types of reaction configurations have been set up in conformity with the experimental conditions. Thermodynamic…

Journal of Physical Chemistry C, 2015, 119 (24), pp.13619-13631. ⟨10.1021/acs.jpcc.5b01911⟩. ⟨hal-01226507⟩

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Beyond simple AB diblock copolymers: application of bifunctional and trifunctional RAFT agents to PISA in water

Gaëlle Mellot, Patricia Beaunier, Jean-Michel Guigner, Laurent Bouteiller, Jutta Rieger, François Stoffelbach

The influence of the macro-RAFT agent architecture on the morphology of the self-assemblies obtained by aqueous RAFT dispersion polymerization in PISA is studied by comparing amphiphilic AB diblock, (AB)2 triblock and triarm-star shaped (AB)3 copolymers, constituted of N,N-dimethylacrylamide (DMAc…

Macromolecular Rapid Communications, 2019, 25 (12), ⟨10.1002/marc.201800315⟩. ⟨hal-02404754⟩

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On the corrosion resistance of the CoCrFeMnNi high entropy alloys in chloride-containing sulfuric acid solutions

Yaojun Hou, Baojie Dou, Chenyang Xie, Fan Sun, Stéphane Rioual, Benoit Lescop, Kevin Ogle, Antoine Miche, Oumaïma Gharbi, Mireille Turmine, Vincent Vivier

The electrochemical reactivity of the high entropy Cantor alloy (CoCrFeMnNi) was investigated via potentiodynamic polarization curves, electrochemical impedance spectroscopy (EIS), and surface analysis as a function of chloride content, in sulfuric acid solutions. The results revealed that…

Applied Surface Science, 2024, 681, pp.161487. ⟨10.1016/j.apsusc.2024.161487⟩. ⟨hal-04775546⟩

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Surface immobilization mechanisms of cobalt ions on hydroxyapatite catalyst supports

Corentin Reynaud, Cyril Thomas, Dalil Brouri, Yannick Millot, Antoine Miche, Guylène Costentin

Cobalt deposition in an excess of solution was used to design Co-modified hydroxyapatite materials with various Co loadings and controlled dispersion. It is rationalized how the properties of hydroxyapatite supports (more or less stoichiometric compositions, nanorod or platelet morphologies and…

Catalysis Today, 2024, 432, pp.114621. ⟨10.1016/j.cattod.2024.114621⟩. ⟨hal-04748794⟩