Publications
| 2024 (4) | 2023 (5) | 2022 (3) | 2021 (5) |
| 2020 (3) | 2019 (12) | 2018 (5) | 2017 (3) |
| 2016 (4) | 2015 (2) | 2014 (4) | 2013 (7) |
| 2012 (7) | 2011 (1) | 2010 (2) | 2008 (1) |
2022 | Articles and Reviews
Nickel Carbide (Ni3C) Nanoparticles for Catalytic Hydrogenation of Model Compounds in Solvent
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We investigated here crystalline nickel carbide nanoparticles as catalysts in colloidal suspension for hydrogenation reactions under H2 (7 bar) and below 100°C. Polar solvents appeared comparatively more favorable than less polar ones for the hydrogenation of two model substrates: nitrobenzene and phenylacetylene. Furthermore, the presence of water in the solvent mix was mostly favorable to the hydrogenation yield. We expanded the scope to a variety of aldehydes, ketones, esters, nitriles and unsaturated hydrocarbons. |
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R. F. André, L. Meyniel, S. Carenco, Cat. Sci. Tech. 2022, doi 10.1039/D2CY00894G |
The Delicate Balance of Phase Speciation in Bimetallic Nickel Cobalt Nanoparticles
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Due to the variety of cobalt crystallographic phases, forming fcc nanoparticles rather than phase mixture is a challenging endeavor. We found optimized conditions to form size-controlled fcc NiCo nanoparticles from preformed Ni nanoparticles. We then investigated the early stages of Co nucleation on the nickel using a lower stoichiometry of Co, down to 0.05 equiv. vs. Ni. We showed that cobalt reacts first on the nickel nanoparticles but easily forms cobalt-rich larger aggregates in the further steps of the reaction. |
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A. Palazzolo, C. Poucin, A. P. Freitas, A. Ropp, C. Bouillet, O. Ersen, S. Carenco, Nanoscale 2022, doi 10.1039/D2NR00917J. |
Risk Analysis and Technology Assessment of Emerging (Gd,Ce)2O2S Multifunctional Nanoparticles: An Attempt for Early Safer-by-Design Approach
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Acceptability and relevance of nanoparticles in the society is greatly improved using a safer-by-design strategy. However, this is difficult to implement when nanoparticles are already on the market We employ this strategy for emerging nanoparticles of lanthanide oxysulfide, relevant for photocatalysis as well as for multimodal imaging. We investigated the production of reactive oxygen species (ROS) as a function of cerium content, in abiotic conditions and in vitro using murine macrophage RAW 264.7 cell line. We propose a risk analysis for lanthanide oxysulfide nanoparticles, leading to a technology assessment that fulfills the safer-by-design strategy. |
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A.-M. Nguyen, A. E. Pradas del Real, O. Durupthy, S. Lanone, C. Chanéac, S. Carenco, Nanomaterials 2022, 12, 422. |
