New Insights on the Working Principles at the Atomic Scale of Cobalt Oxide Catalysts

PhD defence, Wednesday 20 June 2018, Jakob Fester.

2018.06.20 | Trine Berndt Turtiainen Scheelke

Jakob Fester

STM image of a cobalt oxide nanoparticle: The surface oxygen atoms (red) and individual hydrogen (H) atoms (white) are resolved in the image.

During his studies, Jakob Fester has investigated the detailed structure of cobalt oxides and their interaction with omnipresent molecules such as O2 and H2O. The results have provided important fundamental knowledge on detailed reaction mechanisms and structural transitions and are important in relation to the ongoing development of improved cobalt oxide catalysts in, especially, water splitting technology. The main work has focused on Scanning Tunneling Microscopy (STM) and has resulted in acquisition of both atom-resolved images and “STM movies”. Hence, the work has enabled us to “see” several chemical processes occurring on the catalyst surface.

The PhD degree was completed at the Interdisciplinary Nanoscience Center (iNANO), Science and Technology, Aarhus University.

This résumé was prepared by the PhD student.

Time: Wesdnesday 20 June 2018 at 12:30
Place: 1593-012, iNANO Auditorium, Gustav Wieds Vej 14, 8000  Aarhus C
Title of PhD thesis: Fundamental investigations of cobalt oxide model catalysts - from studies under ultra-high vacuum to electrochemical environment
Contact information: Jakob Fester, e-mail:, tel.: +45 2993 3392
Members of the assessment committee:
Professor Jörg Libuda, Department of Chemistry and Pharmacy, Friedrich Alexander University, Erlangen, Germany
Associate Professor Gareth S. Parkinson, Institut für Angewandte Physik, Technische Universität Wien, Austria
Professor Liv Hornekær (chair), iNANO and Department of Physics and Astronomy, Aarhus University
Main supervisor:
Associate Professor Jeppe Vang Lauritsen, iNANO and Department of Physics and Astronomy, Aarhus University
Language: The PhD dissertation will be defended in English

The defence is public.
The PhD thesis is available for reading at the Graduate School of Science and Technology/GSST,
Ny Munkegade 120, building 1520, rooms 128-134, 8000 Aarhus C.

PhD defence
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Revised 18.06.2018