Proceedings of nanoGe Fall Meeting19 (NFM19)
DOI: https://doi.org/10.29363/nanoge.nfm.2019.185
Publication date: 18th July 2019
In this presentation, we will address the use of metal oxides as candidate materials for photoelectrodes in water splitting electrochemical cells. Their low-cost, earth-abundance, stability under harsh envoronments and easy synthesis and up-scalability have positioned these materials as interesting candidates for this application.[1] Although in terms of functional performance there are still important challenges to address, these materials can be engineered to significantly decrease the bulk and surface loss mechanisms, with remarkable examples like BiVO4, where photocurrents close to the theoretical maximum have been achieved.[2] In the present contribution, we will describe different examples of the synergistic combination of metal oxides (Fe2O3,[3] WO3,[4] and BiVO4,[4,5]) with catalytic layers (Fe-Co Prussian Blue,[3,6] Ag3PO4, MOF derivatives,[7]…), emphasizing the mechanistic insights leading to enhanced performance. Our studies focus on the correlation of the photoelectrochemical response of the materials with a detailed structural and mechanistic characterization carried out by different microscopic and spectroscopic tools.
We would like to acknowledge financial support from the Ministerio de Ciencia, Innovación y Universidades of Spain (ENE2017-85087-C3-1-R) and the European Commission for the project A-LEAF (grant agreement No 732840).
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