Missions

The postdoctoral researcher will be responsible for developing a continuous flow synthesis method for high-entropy alloy nanoparticles (nano-HEAs) and evaluating their catalytic performance in CO₂ methanation, a key reaction for converting renewable energy into synthetic gas. This includes the controlled synthesis of nanocatalysts, their advanced characterization (TEM, XRD, operando spectroscopies), and analyzing the relationship between their structure and catalytic activity to optimize their durability and efficiency under industrial conditions. The goal is to contribute to a sustainable energy storage solution while avoiding the use of expensive metals.

Activities

The postdoctoral researcher will focus on the synthesis and optimization of high-entropy alloy nanoparticles (nano-HEAs). Their work will involve developing reproducible fabrication methods—both in continuous flow and batch processes—to precisely control the composition, size, and distribution of these nanocatalysts. These materials, with their exceptional properties, are designed to accelerate CO₂ methanation, a critical reaction in the energy transition that converts surplus renewable electricity into synthetic gas.
Another key aspect of the role is the characterization and performance evaluation of these catalysts. Using advanced techniques such as TEM, XRD, and operando spectroscopies, the researcher will analyze structural and chemical changes in the catalysts under real-world conditions. The aim is to identify active phases and optimize their efficiency, selectivity, and durability in demanding environments. By synthesizing these nanocatalysts (via batch and microfluidic methods), characterizing them with cutting-edge tools, and assessing their performance (activity, selectivity, stability), the goal is to harness the unique properties of HEAs to enhance CO₂-to-methane conversion while reducing costs and environmental impact.

Skills

For this position, the required technical skills include a strong background in nanomaterial synthesis, particularly through chemical or microfluidic methods. Proficiency in characterization techniques (TEM, XRD, IR/Raman spectroscopies) is essential, along with familiarity with operando methods to study catalysts under real-world conditions. Knowledge of heterogeneous catalysis and CO₂ methanation would be an advantage, as would the ability to analyze data using tools like Python.
On a transversal level, the candidate should demonstrate autonomy, experimental rigor, and initiative in designing and optimizing protocols. Strong written and oral communication skills in French or English are necessary for report writing and team collaboration. While no prior postdoctoral experience is required, a PhD in chemistry or physics is mandatory.

Work Context

Ce postdoctorat s'inscrit dans le projet iDream, qui vise à exploiter les nanoparticules d'alliages à haute entropie (nano-HEA) comme catalyseurs innovants pour la méthanation du CO₂, une étape clé de la technologie Power-to-Gas. L'objectif est de développer des solutions durables pour convertir les excédents d'énergie renouvelable en méthane, en évitant les métaux nobles coûteux. Le travail s'appuiera sur des approches expérimentales avancées (synthèse en flux continu, analyses operando) pour comprendre et optimiser les performances de ces matériaux dans des conditions industrielles.