Proceedings of MATSUS Fall 2024 Conference (MATSUSFall24)
DOI: https://doi.org/10.29363/nanoge.matsusfall.2024.320
Publication date: 28th August 2024
(Photo)electrocatalysis has emerged as a promising process to store renewable energy into fuels and high added-value chemicals to decarbonise the energy and fine chemical sectors. As such, the water splitting process to generate H2 and O2 is of particular interest, where the oxygen evolution reaction (OER) is the bottleneck of this process, especially when using Earth-abundant metal oxide catalysts. The efficiency of these catalysts, in particular towards scaling them up, does not only depend on the nature of the metal oxide, but also on their physical characteristics such as composition, magnetic susceptibility and doping variations, and even their nanostructure amongst others. Additionally, replacing water for small organic molecules as electron donor to increase the efficiency of H2 production concomitant to high added-value product synthesis has been attracting increasing attention.
Such variations in efficiency are closely related to the nature and availability of active sites, whose characterisation is not trivial. In this talk, I will present recent advances on the use of in-situ spectroscopic techniques, in particular UV-Vis and XAS spectroelectrochemistry, to shine light into the kinetics and reaction mechanism of OER and glycerol oxidation.
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