• Article dans une revue

Improved Experimental Setup to Reach a Broad Frequency Domain in Local Electrochemical Impedance Spectroscopy Measurements

Maurilio Pereira Gomes, Samantha Michelle Gateman, Isolda Costa, Oumaïma Gharbi, Kieu Ngo, Jesualdo Luiz Rossi, Mireille Turmine, Vincent Vivier

We report a new experimental setup enabling local electrochemical impedance spectroscopy (LEIS) measurements over a wide frequency range, including the low frequency domain. First, an improved signal treatment was performed using a potential shifter to minimize the DC component of the measured…

Measurement - Journal of the International Measurement Confederation (IMEKO), 2022, 200, pp.111504. ⟨10.1016/j.measurement.2022.111504⟩. ⟨hal-03719357⟩

• Article dans une revue

Palladium Nanowires Synthesized in Hexagonal Mesophases: Application in Ethanol Electrooxidation

Faygal Ksar, Geetarani Surendran, Laurence Ramos, Bineta Keita, Louis Nadjo, Eric Prouzet, Patricia Beaunier, Agnes Hagege, Fabrice Audonnet, Hynd Remita

Palladium nanowires (of length a few tens of nanometers) are synthesized in a hexagonal mesophase formed by a quaternary system (Pd-doped water, surfactant, cosurfactant, and oil) by electron beam irradiation. The mesophases can be doped by high concentrations of palladium (0.1 M) without any…

Chemistry of Materials, 2009, 21, pp.1612-1617. ⟨10.1021/cm803492j⟩. ⟨hal-00514226⟩

• Article dans une revue

Calibrated Co3O4 nanoparticles patterned in SBA-15 3 silicas: Accessibility and activity for CO oxidation

Irène Lopes, Anne Davidson, Cyril Thomas

The catalytic performances in CO oxidation of Co3 O4 nanoparticles patterned in the porosity of SBA-15 silicas are investigated. 10 Accessibility limitations of the reactants to the catalytic sites are clearly revealed,when the Co3O4 nanoparticles are embedded in the 11 SBA-15 pores.Despite these…

Catalysis Communications, 2007, 8, pp.2105-2109. ⟨hal-00181045⟩

• Article dans une revue

Nanoporous Materials as New Engineered Catalysts for the Synthesis of Green Fuels

Ioana Fechete, Jacques Vedrine

This review summarizes the importance of nanoporous materials and their fascinating structural properties with respect to the catalytic and photocatalytic reduction of CO2 to methane, toward achieving a sustainable energy supply. The importance of catalysis as a bridge step for advanced energy…

Molecules, 2015, 20 (4), pp.5638-5666. ⟨10.3390/molecules20045638⟩. ⟨hal-01226491⟩

• Article dans une revue

Role of solute-solvent hydrogen bonds on the ground state and the excited state proton transfer in 3-hydroxyflavone. A systematic spectrophotometry study

Simone Lazzaroni, Daniele Dondi, Alberto Mezzetti, Stefano Protti

Photochemical & Photobiological Sciences , 2018, 17 (7), pp.923-933. ⟨10.1039/C8PP00053K⟩. ⟨hal-04020487⟩

• Article dans une revue

Oxygen reduction reaction monitored during corrosion by means of pumped-micropipette delivery/substrate collection (Pumped-MD/SC) mode of scanning electrochemical microscopy

Abdelilah Asserghine, Sophie Juillard, Julie Ducrot, Vincent Vivier, Carlos Sánchez-Sánchez

The key improvement of the corrosion resistance of metals requires understanding and resolving the electrochemical reactions involved at the local scale. Here, we present the use of the pumped-micropipette delivery/substrate collection (Pumped-MD/SC) mode of scanning electrochemical microscopy (…

Electrochimica Acta, 2023, 441, pp.141775. ⟨10.1016/j.electacta.2022.141775⟩. ⟨hal-03934097⟩

• Article dans une revue

Investigating the DMPO-formate spin trapping method for the study of paper iron gall ink corrosion

Alice Gimat, Valeryia Kasneryk, Anne-Laurence Dupont, Sabrina Paris, Frederic Averseng, Jeanine Fournier, Pascale Massiani, Véronique Rouchon

Paper degradation by iron gall ink is a challenging issue for the conservation of ancient manuscripts. It is usually attributed to both FeII catalyzed oxidation and acid catalyzed hydrolysis of cellulose, yet the dominant degradation pathway remains an open question. In this work, electron spin…

New Journal of Chemistry, 2016, 40 (11), pp.9098-9110. ⟨10.1039/c6nj01480a⟩. ⟨hal-01502192⟩

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Characterization and reactivity of VMgO catalysts prepared by wet impregnation and sol–gel methods

Samira Slyemi, Akila Barama, Juliette Blanchard, Hassiba Messaoudi, Sandra Casale, Christophe Calers

Chemical Engineering Communications, 2018, 205 (9), pp.1288-1298. ⟨10.1080/00986445.2018.1446424⟩. ⟨hal-02375309⟩

• Article dans une revue

Stable Carboxylate-Terminated Gold Surfaces Produced by Spontaneous Grafting of an Alkyltin Compound

Mayreli Ortiz, Ahmed Debela, Christophe Méthivier, Serge Thorimbert, Bernold Hasenknopf, Ciara O'Sullivan

Chemistry - A European Journal, 2018, 24 (43), pp.11177 - 11184. ⟨10.1002/chem.201801854⟩. ⟨hal-01878679⟩

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Investigation of ionic surfactant-selective electrodes by EIS

Claude Gabrielli, Patrick Hemery, Pierre Letellier, Michele Masure, Hubert Perrot, Marie-Isabelle Rahmi, Mireille Turmine

A model of ionic surfactant-selective electrodes with mobile ionic sites is proposed. The steady-state concentrations of the active species are calculated. The electrochemical impedance of the membrane immersed between electrolytic solutions is given. This model is in good agreement with the…

Electrochimica Acta, 2002, 47 (13-14), pp.2117-2126. ⟨10.1016/S0013-4686(02)00083-X⟩. ⟨hal-04219890⟩