OERKOP aims to understand and describe the mechanisms underlying the OER for co-catalyst modified hematite photoanodes, by using a correlative operando characterization approach at the nanoscale. OERKOP proposes a comparative study between two archetypal materials used as photoanodes: α-Fe2O3 and BiVO4, both catalytically activated by oxyhydroxide catalysts (M-OOH, with M = Fe, Ni, Co, Cu, Zn). Surface kinetics and time stability during the oxidation will be systematically evaluated. We intend combining multi-scale and multi-selective techniques - scanning transmission X-ray microscopy (STXM) and scanning transmission electron microscopy (STEM). Both techniques will employ a common sample environment in a dedicated photoelectrochemical cell. Complementary DFT calculations will allow dissecting complex effects and determining the reaction priorities of different photocatalytic sites.
CONSORTIUM:
SPEC
CEA, CNRS
Univ. Paris-Saclay
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Synchrotron SOLEIL
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IPCMS
Univ. de Strasbourg
CNRS
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Dana STANESCU (LNO)
Yannick DAPPE (GMT)
Cindy ROUNTREE (SPHYNX)
Frederic MERLET (LNO)
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Stefan STANESCU (HERMES)
Jean-Baptiste BOY (HERMES)
Karine CHAOUCHI (Laboratoire de chimie)
Stephanie BLANCHANDIN (Laboratoire de chimie)
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POSITIONS:
PhD 1: estimated start date of the thesis: January 2024
M2 internship from February to July 2024:
We are looking for a motivated M2 student to fulfil the following missions:
You can find more details here:
PhD 2: starting October 2024
Preliminary works and results:
Results dissemination during OERKOP:
Highlights:
2023 : Des matériaux simples et abondants pour une énergie future propre et efficace :
https://iramis.cea.fr/spec/Phocea/Vie_des_labos/Ast/ast.php?t=fait_marquant&id_ast=3580
Oral and poster presentations
18ème Colloque de la Société Française des Microscopies, 3 au 7 juillet 2023, Rouen (France)
The 20th International Microscopy Congress (IMC20), September 10-15, 2023, Busan (Korea)
Scientific preprints and peer-review articles
Internship and PhD thesis
MEETINGS:
1) Kick-off meeting: Date: 20th of April @SPEC
• UMR 3680 - Service de Physique de l'Etat Condensé (SPEC)
• Laboratoire Nano-Magnétisme et Oxydes (LNO)
• Aqueous chemical growth of nanostructured oxide films • Banc de mesure de la photo-électrolyse de l’eau / spectroscopie d’impédance