Laboratoire de réactivité de surface

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  • Article dans une revue

Tracking element-specific dissolution during pitting corrosion: an operando ICP-AES–electrochemical study of the CoCrFeMnNi Cantor alloy

Yaojun Hou, Oumaïma Gharbi, Chenyang Xie, Divino Salvador Ramírez Rico, Fan Sun, Mireille Turmine, Kevin Ogle, Vincent Vivier

In this work, a flow-through electrochemical–ICP-AES platform for operando monitoring of pitting corrosion on the CoCrFeMnNi high-entropy alloy is introduced. This setup combines localized chloride injection, potentiostatic control, and online, element-resolved dissolution analysis, thereby…

npj Materials Degradation, 2026, 10 (1), pp.33. ⟨10.1038/s41529-026-00747-2⟩. ⟨hal-05540917⟩

  • Article dans une revue

Chromium-Salophen as a Soluble or Silica-Supported Co-Catalyst for the Fixation of CO2 Onto Styrene Oxide at Low Temperatures

Matthieu Balas, Ludivine K/bidi, Franck Launay, Richard Villanneau

Addition of a soluble or a supported Cr III-salophen complex as a co-catalyst greatly enhances the catalytic activity of Bu 4 NBr for the formation of styrene carbonate from styrene epoxide and CO 2. Their combination with a very low co-catalyst:Bu 4 NBr:styrene oxide molar ratio 1:2:112 (…

Frontiers in Chemistry, 2021, 9 (765108), ⟨10.3389/fchem.2021.765108⟩. ⟨hal-03443129⟩

  • Article dans une revue

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⟩

  • Chapitre d'ouvrage

On the chemistry of the conversion coatings

Oumaïma Gharbi, Kevin Ogle, Junsoo Han

A conversion coating is an inorganic or organic–inorganic hybrid surface film conveying specific desirable functions to a material, formed by a spontaneous reaction between the material and an electrolyte. This chapter reviews the fundamental physical chemistry of the conversion coating process and…

Reference Module in Chemistry, Molecular Sciences and Chemical Engineering, 3, Elsevier, pp.532-546, 2024, ISBN: 978-0-12-409547-2. ⟨10.1016/B978-0-323-85669-0.00091-X⟩. ⟨hal-04049955⟩

  • Article dans une revue

Gold Colloid-Nanostructured Surfaces for Enhanced Piezoelectric Immunosensing of Staphylococcal Enterotoxin A

Maroua Ben Haddada, Michèle Salmain, Souhir Boujday

We describe the use of gold nanoparticles (AuNP) as a nanostructuring agent on quartz crystal sensor chips to engineer staphylococcal enterotoxin A (SEA) piezoelectric biosensors with amplified response. AuNPs were assembled on gold- or silicon-coated quartz crystal sensor chips by a wet chemistry…

Sensors and Actuators B: Chemical, 2018, 255 (Part 2), pp.1604-1613. ⟨10.1016/j.snb.2017.08.180⟩. ⟨hal-01585227⟩

  • Article dans une revue

Glutamic Acid Adsorption and Transformations on Silica

Meryem Bouchoucha, Maguy Jaber, Thomas Onfroy, Jean-François Lambert, Xue Baiyi

We report here on the adsorption and deposition of l-glutamic acid (Glu) on an amorphous silica and its subsequent thermal transformations. When adsorbed from aqueous solutions, Glu only has a low affinity for the silica surface but at high concentrations the adsorbed molecules serve as nuclei for…

Journal of Physical Chemistry C, 2011, 115, pp.21813-21825. ⟨10.1021/jp206967b⟩. ⟨hal-00670087⟩

  • Article dans une revue

Highly Conductive Tungsten Suboxide Nanotubes

Cécile Huez, Maxime Berthe, Florence Volatron, Jean-Michel Guigner, Dalil Brouri, Lise-Marie Chamoreau, Benoît Baptiste, Dominique Vuillaume, Anna Proust

We demonstrate a high electron conductivity (> 10^2 S/cm and up to 10^3 S/cm) of tungsten suboxide W18O(52.4-52.9)(or equivalently WO(2.91-2.94)) nanotubes (2 to 3 nm in diameter, ca. micrometer long). The conductivity is measured in the temperature range 120 to 300K by a four probe scanning…

Journal of Applied Physics, 2023, 134, pp.134301. ⟨10.1063/5.0170761⟩. ⟨hal-04178947v2⟩

  • Article dans une revue

The Influence of TiO2 Nanoparticles Morphologies on the Performance of Lithium-Ion Batteries

Wenpo Luo, Juliette Blanchard, Yanpeng Xue, Abdelhafed Taleb

Anode materials based on the TiO2 nanoparticles of different morphologies were prepared using the hydrothermal method and characterized by various techniques, such as X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), and N2 absorption. The TiO2 nanoparticles prepared…

Nanomaterials, 2023, 13 (19), pp.2636. ⟨10.3390/nano13192636⟩. ⟨hal-04285247⟩

  • Thèse

Pinces moléculaires commutables pour des organogels stimulables, Switchable molecular tweezers for stimuli responsive organogels

Pablo Msellem

Cette thèse présente la synthèse d'une famille de pinces moléculaires commutables en vue de contrôler des propriétés d'organogélation en exploitant leur mouvement mécanique induit par un stimulus chimique. L'architecture moléculaire du système est basée sur une unité commutable…, This thesis presents the synthesis of a family of switchable molecular tweezers in order to control organogelation properties by exploiting their mechanical motion induced by a chemical stimulus. The molecular architecture of the system is based on a central switchable terpyridine unit that can, by…

Chimie de coordination. Sorbonne Université, 2024. Français. ⟨NNT : 2024SORUS357⟩. ⟨tel-04910654⟩

  • Article dans une revue

Covalent shaping of polyoxometalate molecular films onto ITO electrodes for charge trapping induced resistive switching

Raphaël Salles, Wei Church Poh, Maxime Laurans, Florence Volatron, Antoine Miche, Sandra Alves, Christian Carino, Ludovic Tortech, Guillaume Izzet, Pooi See Lee, Anna PROUST

As nano-sized molecular oxides, polyoxometalates (POMs) hold great promise in non-volatile memory materials based on redox-active molecules. Materials processed from solution, by drop-casting, by embedding POMs in polymers, or using Layer-by-Layer deposition techniques have thus been reported and…

Inorganic Chemistry Frontiers, 2024, 11 (1), pp.255-268. ⟨10.1039/d3qi01761c⟩. ⟨hal-04361172⟩