Proceedings of MATSUS Spring 2024 Conference (MATSUS24)
DOI: https://doi.org/10.29363/nanoge.matsus.2024.197
Publication date: 18th December 2023
Hydrogen and other solar fuels have been highlighted as one of the future energy vectors. Having natural photosynthesis as inspiration, we can develop a device capable to split water using sunlight, obtaining oxygen and hydrogen. [1], [2] Different strategies can be used to achieve this: from separated light harvesting and catalytic systems to all integrated devices able to transform directly sunlight into fuels. These systems can be built with a variety of (photo)electrodes such as organic based material, chalcogenides or metal oxides. In most of them the addition of a co-catalyst layer it is pivotal to improve their efficiency. Although rapid progress is being made in the field, understanding of the limiting factors of these catalysts has allowed remarkable improvements in their performance.
In this talk I will focus on the use of organometallic method to prepare nanoparticles as catalysts for solar fuels production. This is a versatile method able to grow NPs in bulk or in the presence of a support.[3], [4] In here I will present the use of this method to prepare different metal NPs on different organic based light absorbers and their activity as photocatalysts for hydrogen production. Interestingly in this work the photocatalysts containing Ni NP present a similar performance than the Pt ones. In order to correlate the performance with the nature of each photocatalyst, we have characterised of the materials before and after catalysis. The latter is a key information to unravel the main deactivation pathways, and consequently, systematically designing new and more efficient photocatalytic systems.
Recent research projects and grants include PID2019-104171RB-I00, PID2021-128197NA-I00, TED2021-129237B-I00, LEO23-2-9871 and the Ramón y Cajal Program (RYC2018-025394-I fellowship)
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