Advanced nanoparticles and methodologies
We’ll have the pleasure to host, with Prof. Nathalie Vast (Ecole Polytechnique) and Jean-François Halet (NIMS-LINK), ISBB2022, the 21st International Symposium on Boron, Borides and related materials. The conference will be held in Jussieu campus, in Quartier Latin, in September 2022.
More details there: https://isbb2022.paris/
We have an opened PhD position with ERC funding! Details for application can be found at the following link: https://bit.ly/3wwBldh
During the last months we have published some papers where we dig in several topics:
Chemistry of silicon-based nanomaterials, from Yang’s work:
Converting silicon nanoparticles into nickel iron silicide nanocrystals within molten salts for water oxidation electrocatalysis, Journal of Materials Chemistry A, 10, 1350 (2022)
A straightforward approach to high purity sodium silicide Na4Si4, Dalton Transactions, 50, 16703 (2021)
Combining nanoparticles with metallurgical processes to design new composites, from Binghua’s work:
Liquid Processing of Bismuth–Silica Nanoparticle/Aluminum Matrix Nanocomposites for Heat Storage Applications, ACS Applied Nano Materials, 5, 2, 1917 (2022)
The group has evolved quite a lot over the last months. We wish a lot of success for the future to Guillaume and Yang who have brilliantly defended their thesis!
And… we welcome the new generation who arrived during the last weeks: Marzena is a new postdoc, geoscientist and interesting in structural transformations in nanomaterials, Emile is master student working on layered materials, Ambroise deals with perovskite oxide nanocatalysts, and Daniel is PhD candidate at Universidad Complutense de Madrid, visiting us for 2 months for nanoscale oxide synthesis.
David has made several free-to-access recorded seminars in 2022 and late 2021:
The first one (in French) at Collège de France, where he was invited by Prof. J.-M. Tarascon as part of his lectures:
The second one (in English) for The EuChemS Lecture Award. At the end of this one, Yang and Fernando have been invited to give short talks on their own works:
We are looking for new members, PhDs and postdoc, to join the group. Details and formal applications can be found at the following links:
We designed the first nanocrystals of sodium carbaboride in molten salts, and unveiled the deviation to ideal stoichiometry that is made possible by a specific molten salt-derived synthesis route and by the nanoscale of the objects. The nanocrystals can act as precursors towards functional boron carbides. This work is part of a Forum of Inorganic Chemistry.
Electron Precise Sodium Carbaboride Nanocrystals from Molten Salts: Single Sources to Boron Carbides, S. Delacroix, F. Igoa, Y. Song, Y. Le Godec, C. Coelho-Diogo, C. Gervais, G. Rousse, D. Portehault*, Inorganic Chemistry, 10.1021/acs.inorgchem.0c03501
David received the 2019 EuChemS Lecture Award! That’s a great honour recognizing the efforts of our group, the collaborative framework within the lab and all collaborators. Thanks to everyone, and see you for the actual lecture, beginning of 2021.
We report herein new oxides and oxyfluorides built on the apatite crystal framework and hosting Mn5+, a rare oxidation state of manganese, very scarcely observed in oxides. We take the opportunity of isolating these new solids to provide the first spectroscopic characterization of Mn5+ by EELS and to show the significant ionic conductivity of these solids.
This work was hosted by the department of Solid State Chemistry of the Universidad Complutense de Madrid. A strongly collaborative work with the RMES group of LCMCP lab, the Solid-State Chemistry and Energy Lab at Collège de France, and ILL at Grenoble.
Hydroxyapatites as Versatile Inorganic Hosts of Unusual Pentavalent Manganese Cations, A. Varela, I. Gómez-Recio, L. Serrador, M. Hernando, E. Matesanz, A. Torres-Pardo, M. T. Fernández-Díaz, J. L. Martínez, F. Gonell, G. Rousse, C. Sanchez, C. Laberty-Robert, D. Portehault, J. M. González-Calbet, M. Parras, Chemistry of Materials, DOI: 10.1021/acs.chemmater.0c03673
We are reporting a second work on in situ electrochemical transmission electron microscopy! This is part of the nice PhD work of Dr. Nathaly Ortiz. We combine several microscopy techniques, i. e. in situ transmission electron microscopy, atomic force microscopy and scanning transmission electron microscopy, in order to assess the electrodeposition of graphene oxide films from pyrocatechol.
Correlative Microscopy Insight on Electrodeposited Ultrathin Graphite Oxide Films, N. Ortiz Peña, D. Ihiawakrim, V. Ball, S. Stanescu, M. Rastei, C. Sanchez, D. Portehault, O. Ersen, Journal of Physical Chemistry Letters, DOI: 10.1021/acs.jpclett.0c02482
