• Article dans une revue

Elucidation of the IR of Cu and Mn substituted intraframework SiBEA zeolites

Etienne Hessou, Michael Badawi, Laetitia Valentin, Guy Atohoun, Stanislaw Dzwigaj, Monica Calatayud, Frederik Tielens

Copper and manganese modified zeolites play key roles in selective oxidation catalytic reactions. Combining Density Functional Perturbation Theory (DFPT) implemented in VASP, and infrared spectroscopy experiments, we have studied and elucidated the incorporation of Cu 2+ and Mn 2+ in the framework…

Topics in Catalysis, 2022, ⟨10.1007/s11244-022-01601-w⟩. ⟨hal-03650572⟩

• Article dans une revue

In situ observation of atomic redistribution in alloying gold-silver nanorods

Jessi E S van Der Hoeven, Tom a J Welling, Tiago a G da Silva, Jeroen E van den Reijen, Camille La Fontaine, Xavier Carrier, Catherine Louis, Alfons van Blaaderen, Petra E de Jongh

The catalytic performance and optical properties of bimetallic nanoparticles critically depend on the atomic distribution of the two metals in the nanoparticles. However, at elevated temperatures, during light induced heating or during catalysis atomic redistribution can occur. Measuring such metal…

ACS Nano, 2018, 12 (8), pp.8467-8476. ⟨10.1021/acsnano.8b03978⟩. ⟨hal-03157963⟩

• Chapitre d'ouvrage

Synthesis of metal oxide catalysts

Xavier Carrier, Sébastien Royer, E. Marceau

This chapter gives an overview of the current preparation strategies for the synthesis of bulk and supported metal oxide catalysts, in order to give rational guides to understand the synthetic challenges associated with the preparation of these catalytic systems developed in the successive chapters…

Védrine, Jacques C. Metal Oxides in Heterogeneous Catalysis, Elsevier, pp.43-103, 2018, 978-0-12-811631-9. ⟨10.1016/b978-0-12-811631-9.00002-8⟩. ⟨hal-03575930⟩

• Article dans une revue

Control of particle size via chemical composition: Structural and magnetic characterization of Ni–Co alloy nanoparticles encapsulated in lamellar mixed oxides

K.A. Tarasov, V.P. Isupov, B.B. Bokhonov, Yu.A. Gaponov, B.P. Tolochko, M.M. Yulikov, V.F. Yudanov, A. Davidson, P. Beaunier, E. Marceau, M. Che

Microporous and Mesoporous Materials, 2008, 107 (1-2), pp.202-211. ⟨10.1016/j.micromeso.2007.05.026⟩. ⟨hal-03032180⟩

• Article dans une revue

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⟩

• Article dans une revue

Effect of Coverage and Defects on the Adsorption of Propanethiol on Au(111) Surface: A Theoretical Study

Noelia B. Luque, Elizabeth Santos, Juan Andres, Frederik Tielens

Periodic density functional calculations have been carried out to investigate both the thiol adsorption on Au(111) surface and the reaction mechanism for the formation of the self-assembled monolayers, taking propanethiol as a representative example. The effect of coverage and surface defects (…

Langmuir, 2011, 27, pp.14514-14521. ⟨10.1021/la202861s⟩. ⟨hal-00670100⟩

• Article dans une revue

Adsorption and thermal condensation mechanisms of amino acids on oxide supports : I. Glycine on silica

Ming Meng, Lorenzo Stievano, Jean-François Lambert

Glycine was adsorbed on the surface of a well-defined silica from aqueous solutions of variable concentrations and pHs. The adsorbed molecules were characterized using middle-IR and UV-vis-NIR spectroscopies. Except at the lowestpH(2.0), they were predominantly present on the surface as zwitterions…

Langmuir, 2004, 20, pp.914-923. ⟨hal-00022081⟩

• Article dans une revue

Orange Carotenoid Protein in Mesoporous Silica: A New System towards the Development of Colorimetric and Fluorescent Sensors for pH and Temperature

Silvia Leccese, Andrea Calcinoni, Adjélé Wilson, Diana Kirilovsky, Donatella Carbonera, Thomas Onfroy, Claude Jolivalt, Alberto Mezzetti

Orange carotenoid protein (OCP) is a photochromic carotenoprotein involved in the photoprotection of cyanobacteria. It is activated by blue-green light to a red form OCPR capable of dissipating the excess of energy of the cyanobacterial photosynthetic light-harvesting systems. Activation to OCPR…

Micromachines, 2023, 14 (10), pp.1871. ⟨10.3390/mi14101871⟩. ⟨hal-04229121⟩

• Article dans une revue

Vibrating single probe and stationary bi-probes to measure local electrochemical impedance spectroscopy.

Hisasi Takenouti, G. Galicia, Michel Keddam, Vincent Vivier

The electrochemical impedance spectroscopy is widely used to investigate the electrode kinetics. This method is recognized as a powerful method to discriminate one reaction model to another and also to evaluate the reaction rate of elementary steps. However, when the electrode kinetics is markedly…

Bulgarian Chemical Communications, 2006, 38 (3), pp.165-175. ⟨hal-04172938⟩

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Bimetallic Au-Ag/TiO2 catalyst prepared by deposition-precipitation: High activity and stability in CO oxidation

A. Sandoval, A. Aguilar, C. Louis, Agnes Traverse, Rodolfo Zanella

Au-Ag bimetallic catalysts supported on TiO2 were prepared by sequential deposition-precipitation method, silver first and then gold. Au-Ag catalysts with different Au/Ag atomic ratios were synthesized. XANES and H2 TPR results show that gold is more easily reduced in bimetallic catalysts than in…

Journal of Catalysis, 2011, 281, pp.40-49. ⟨10.1016/j.cat.2011.04.003⟩. ⟨hal-00666778⟩