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PhD Position in Femtosecond laser spectroscopy applied to the photocatalysis

This offer is available in the following languages:
Français - Anglais

Date Limite Candidature : mardi 28 février 2023

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General information

Reference : UMR8516-VINDEW-001
Nombre de Postes : 1
Workplace : VILLENEUVE D ASCQ
Date of publication : Monday, January 16, 2023
Scientific Responsible name : vincent de waele
Type of Contract : PhD Student contract / Thesis offer
Contract Period : 36 months
Start date of the thesis : 1 September 2023
Proportion of work : Full time
Remuneration : 2 135,00 € gross monthly

Description of the thesis topic

The conversion of the molecule of methane (CH4) into value-added chemical products and fuels, such as olefins or aromatics is a process of great interest towards a more sustainable and decarbonated industry. However, because of the high stability of the C-H bond the conversion is activated at high temperature, resulting in a high energetic cost and a poor selectivity. The objective of the PhD thesis is to investigate by femtosecond time-resolved spectroscopy the primary chemical steps that govern the photo-conversion of methane at the surface of novel TiO2 [2] and metal-zeolite |3,4] based photocatalysts.For this project, you will investigate the photo-induced processes in new solids states catalysts developed by the partners UCCS and LCS by performing femtosecond UV-vis and Mid IR transient absorption measurements. Your ultimate goal will be to optimize the efficiency and selectivity of the photoconversion of methane thanks to the control of the synergy between the functionality of the catalytic materials and the photodynamics of the ultrafast processes governing the light-to-chemical energy conversion.
The ideal candidate will preferentially have:
- a background in topics like material science and chemistry, catalysis or photochemistry , spectroscopy or light-mater interaction.
- a strong interest in experimental research and data analysis, and for interdisciplinary and collaborative work.

ref: [1] Chem. Rev. 2017, 117, 13, 8497–8520, doi:10.1021/acs.chemrev.6b00715, [2] Nature Com. 10(1) doi:10.1038/s41467-019-08525-2 [3] J. Phys. Chem. C 2017, 121(48), 26958-26966. doi:10.1021/acs.jpcc.7b10727, [4] ChemPhysChem 2020 21(24), 2634-2643. doi:10.1002/cphc.202000822

Work Context

This PhD thesis is part of the PulseCoMeth project funded by the French National Research Agency (ANR) gathering 4 French laboratories LASIRE (Team PCS), UCCS, LCS and IPR expert in the field of Catalysis, Material Science and Photoscience and Ultrafast transient Spectroscopy. The time-resolved experiments will be performed on the ultrafast laser spectroscopy facility of LASIRE. The PhD student (H/F) will also benefit for his (her) research of the different plateforms of electronic, vibrational and EPR spectroscopy of LASIRE. Time-resolved X-ray experiments jointly with partner IPR (Rennes) are also envsionned. All the samples will be available from the partners UCCS (Lille) or LCS (Caen) of the ANR project.

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