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Sujet de stage / Master 2 Internship

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Metal nanoparticle-clays composite for catalysis within "Safe by Design" approach

Contact: TESTARD Fabienne, , fabienne.testard@cea.fr, +33 1 69 08 96 42
Summary:
In the context of an European project HARMLESS (for new tools to guide and evaluate the toxicity of new nanomaterials with increasing complexity), this intership aims to optimize the synthesis of metal nanoparticles/clays composites with a safe-by-design approach.
Possibility of continuation in PhD: Non
Deadline for application:15/02/2023

Full description:
Today, the Safe by Design (SBD) approach should be considered in the development of nanomaterials with increasing level of complexity. It allows to take into account the safety issue since the first steps of the material preparation. The HARMLESS European project [1] aims to propose tools able to guide the management and evaluation of toxicity of nanomaterials with increasing level of complexity, in particular for high aspect ratio nanomaterials. In this context, hybrid material based on metal nanoparticles and nanotubular clays will be synthesized [2,3], characterized and tested for their catalytic functionality [4,5]. The synthesis will be revised according to the toxicity results obtained on the primary design nanomaterials.

The aim of the intership is to 1) optimize the synthesis of clays materials functionalized with metal nanoparticles within a SBD approach 2) characterize the materials and fill an open data base to be used for evaluation of toxicity 3) test the functionality of the material 4) test the colloidal stability in biological media. The interaction with HARMLESS partners project will serve the SBD approach during the intership.

References:
[1] HARMLESS - Advanced high aspect ratio and multicomponent materials (harmless-project.eu)
[2] Picot, P., Taché, O., Malloggi, F., Coradin, T., & Thill, A. (2016). Behaviour of hybrid inside/out Janus nanotubes at an oil/water interface. A route to self-assembled nanofluidics?. Faraday Discussions, 191, 391-406.
[3] Canbek Ozdil, Z. C., Spalla, O., Menguy, N., & Testard, F. (2019). Competitive Seeded Growth: An Original Tool to Investigate Anisotropic Gold Nanoparticle Growth Mechanism. The Journal of Physical Chemistry C, 123(41), 25320-25330.
[4] Patra, S., Schaming, D., Picot, P., Pignié, M. C., Brubach, J. B., Sicard, L., ... & Thill, A. (2021). Inorganic nanotubes with permanent wall polarization as dual photo-reactors for wastewater treatment with simultaneous fuel production. Environmental Science: Nano, 8(9), 2523-2541.
[5] Bouzakher-Ghomrasni, N., Tache, O., Leroy, J., Feltin, N., Testard, F., & Chivas-Joly, C. (2021). Dimensional measurement of TiO2 (Nano) particles by SAXS and SEM in powder form. Talanta, 234, 122619.
Technics/methods used during the internship:
UV-Vis, SAXS (diffusion de rayons X aux petits angles), TEM, microwave, nanoparticle synthesis

Laboratory
Tutor of the internship

 

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