Univ. Paris-Saclay

Service de Physique de l'Etat Condensé

Oxygen evolution reaction: the key to optimize photocatalytic water oxidation (01/04/2023 - 31/03/2027)
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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.



Univ. Paris-Saclay
Synchrotron SOLEIL
Univ. de Strasbourg
Karine CHAOUCHI (Laboratoire de chimie)
Stephanie BLANCHANDIN (Laboratoire de chimie)




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:

  • Implementation and optimization of operando electrochemical STXM measurements;
  • Synthesis and photoelectrochemical characterization of photoanodes;
  • Physico-chemical characterization of photoanodes by SEM, XRD, Raman, STXM and XPEEM;
  • Data processing and analysis, writing of the internship report.

You can find more details here:


PhD 2: starting October 2024


Preliminary works and results:

Results dissemination during OERKOP:


2023 : Des matériaux simples et abondants pour une énergie future propre et efficace :




Oral and poster presentations

  • Léon Schmidt, Walid Baaziz, Dana Stanescu, Stefan Stanescu, Ovidiu Ersen, Correlative in situ microscopy study of photoanodes for solar water splitting (oral)

            18ème Colloque de la Société Française des Microscopies, 3 au 7 juillet 2023, Rouen (France)

  • Léon Schmidt, Walid Baaziz, Dana Stanescu, Stefan Stanescu, Ovidiu Ersen, Correlative in situ microscopy study of photoanodes used in solar water splitting applications (oral)

            The 20th International Microscopy Congress (IMC20), September 10-15, 2023, Busan (Korea)


Scientific preprints and peer-review articles


Internship and PhD thesis



1) Kick-off meeting: Date: 20th of April @SPEC


#3546 - Màj : 06/11/2023


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