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10 results on '"Lecante, P."'

1. Synthèse de nanocatalyseurs Fe-Ni supportés sur SiO2 par voie organométallique

Author

Robert, F., Lecante, P., Moreau, A., Collière, V., Meunier, J.-F., Sadier, A., Wojcieszak, Robert, Marceau, Eric, Amiens, C., Philippot, K., Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), and Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)

Subjects
[CHIM]Chemical Sciences
Abstract

National audience

Published
2021

2. Organometallic synthesis of FeNi nanocatalysts for the hydrogenation of sugars

Author

Robert, F., Lecante, P., Collière, V., Sadier, Achraf, Wojcieszak, Robert, Girardon, Jean-Sébastien, Marceau, Eric, Amiens, C., Philippot, K., Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), and Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)

Subjects
[CHIM]Chemical Sciences
Abstract

International audience

Published
2021

3. Supported FeNi nanocatalysts : an organometallic route for a diversity of systems

Author

Robert, F., Lecante, P., Collière, V., Sadier, Achraf, Wojcieszak, Robert, Girardon, Jean-Sébastien, Marceau, Eric, Amiens, C., Philippot, K., Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), and Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)

Subjects
[CHIM]Chemical Sciences
Abstract

International audience

Published
2021

4. Hexakis [60]Fullerene Adduct-Mediated Covalent Assembly of Ruthenium Nanoparticles and Their Catalytic Properties

Author

Leng F., Gerber I.C., Lecante P., Bentaleb A., Muñoz A., Illescas B.M., Martín N., Melinte G., Ersen O., Martinez H., Axet M.R., Serp P. and This work was supported by the Centre National de la Recherche Scientifique (CNRS), which we gratefully acknowledge. The authors acknowledge financial support from the program of China Scholarships Council (CSC) for F. L. grant. I.C. Gerber also acknowledges the Calcul en Midi-Pyrénées initiative-CALMIP (Project p0812) for allocation of computer time and GENCI-IDRIS and CINES through the project x2016096649. We also thank the European Research Council (ERC-320441-Chirallcar-bon), and the CAM FOTOCARBON project S20.

Published
2017

5. The big impact of a small detail: Cobalt nanocrystal polymorphism as a result of precursor addition rate during stock solution preparation

Author

Liakakos, N. Cormary, B. Li, X. Lecante, P. Respaud, M. Maron, L. Falqui, A. Genovese, A. Vendier, L. Koïnis, S. Chaudret, B. Soulantica, K.

Abstract

The control of nanocrystal structures at will is still a challenge, despite the recent progress of colloidal synthetic procedures. It is common knowledge that even small modifications of the reaction parameters during synthesis can alter the characteristics of the resulting nano-objects. In this work we report an unexpected factor which determines the structure of cobalt nanoparticles. Nanocrystals of distinctly different sizes and shapes have resulted from stock solutions containing exactly the same concentrations of [CoN(SiMe 3) 2 2(thf)], hexadecylamine, and lauric acid. The reduction reaction itself has been performed under identical conditions. In an effort to explain these differences and to analyze the reaction components and any molecular intermediates, we have discovered that the rate at which the cobalt precursor is added to the ligand solution during the stock solution preparation at room temperature becomes determinant by triggering off a nonanticipated side reaction which consumes part of the lauric acid, the main stabilizing ligand, transforming it to a silyl ester. Thus, an innocent mixing, apparently not related to the main reaction which produces the nanoparticles, becomes the parameter which in fine defines nanocrystal characteristics. This side reaction affects in a similar way the morphology of iron nanoparticles prepared from an analogous iron precursor and the same long chain stabilizing ligands. Side reactions are potentially operational in a great number of systems yielding nanocrystals, despite the fact that they are very rarely mentioned in the literature. © 2012 American Chemical Society.

Published
2012

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