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 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.
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.
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
The team has issued two new articles in September and October dedicated to boron chemistry in nanomaterials!
One article published in Inorganic Chemistry is one of the core achievements of Simon Delacroix would received his doctoral title recently. We report nanoparticles of a lithium boride and provide the first in-depth solid-state nuclear magnetic resonance study, coupled to DFT calculations, in order to assign the 7Li and 11B NMR signals in such alkali borides. Nice collaboration with the SMILES group within LCMCP lab.
Synthesis in Molten Salts and Characterization of Li6B18(Li2O)x Nanoparticles, S. Delacroix, Y. Le Godec, C. Coelho-diogo, C. Gervais, I. Génois, P. Le Griel, D. Portehault*, Inorganic Chemistry, DOI: 10.1021/acs.inorgchem.0c01694
A second article relates to a work performed through our long-term collaboration with the team of Dr. Weiwei Lei at Deakin University. We report boronnitride-based membranes as high performance heat conductors.
Nacre-bionic nanocomposite membrane for efficient in-plane dissipation heat harvest under high temperature, J. Wang, D. Liu, Q. Li, C. Chen, Z. Chen, M. Naebe, P. Song, D. Portehault, C. J. Garvey, D. Golberg, W. Lei, Journal of Materiomics, DOI: 10.1016/j.jmat.2020.08.006
The work of Francisco Gonell on the selective synthesis of nickel perovskites into molten salts is published in ACS Applied Nanomaterials! This work was performed jointly with the RMES group of the Lab. LCMCP and with our colleagues from the LISE lab.
Francisco has studied the mechanisms at stake in the formation of perovskite oxides in molten salts in order to drive reaction pathways towards selected crystal structures. We have then shown that we could use these controlled syntheses to tune the electrocatalytic properties of the materials for the reduction of dioxygen.
Experimental Descriptors for the Synthesis of Multicationic Nickel Perovskite Nanoparticles for Oxygen Reduction, F. Gonell, C. M. Sanchez Sanchez, V. Vivier, C. Laberty-Robert, D. Portehault*, ACS Applied Nanomaterials, DOI: 10.1021/acsanm.0c01094
Nathaly is one the recipients of the PhD thesis prize from the University of Strasbourg. Proud of her and of her nice work on in situ transmission electron microscopy. congrats!
