Proceedings of MATSUS23 & Sustainable Technology Forum València (STECH23) (MATSUS23)
DOI: https://doi.org/10.29363/nanoge.matsus.2023.220
Publication date: 22nd December 2022
Photocatalytic sheets have disruptive potential in the field of solar hydrogen production from water. Recent demonstrations have shown the feasibility of their safe operation on a large scale.[1] The key challenge is the development of visible light absorbing photocatalytic particles that are efficient and stable for at least one year. In this talk, I will discuss recent efforts in our laboratory towards adapting our thin film semiconductor water splitting materials towards stable, photocatalytic particles. The methods for the synthesis of the particles and particle sheets will be highlighted, as well as the challenges for the stringent stability requirements (in water, under illumination). Proof-of-principle systems involving hydrogen evolution coupled with the oxidation of various organic molecules (so-called "value added oxidations") will be highlighted. Initial efforts with BiVO4 will be discussed, as this is a well-studied particle for the oxygen evolution reaction. Subsequently, copper oxide and antimony selenide-based systems will be discussed.
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